Gin is a HTTP web framework written in Go (Golang).

Gin Web Framework

Build Status codecov Go Report Card GoDoc Join the chat at https://gitter.im/gin-gonic/gin Sourcegraph Open Source Helpers Release TODOs

Gin is a web framework written in Go (Golang). It features a martini-like API with performance that is up to 40 times faster thanks to httprouter. If you need performance and good productivity, you will love Gin.

Contents

Installation

To install Gin package, you need to install Go and set your Go workspace first.

  1. The first need Go installed (version 1.12+ is required), then you can use the below Go command to install Gin.
$ go get -u github.com/gin-gonic/gin
  1. Import it in your code:
import "github.com/gin-gonic/gin"
  1. (Optional) Import net/http. This is required for example if using constants such as http.StatusOK.
import "net/http"

Quick start

# assume the following codes in example.go file
$ cat example.go
package main

import "github.com/gin-gonic/gin"

func main() {
	r := gin.Default()
	r.GET("/ping", func(c *gin.Context) {
		c.JSON(200, gin.H{
			"message": "pong",
		})
	})
	r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
}
# run example.go and visit 0.0.0.0:8080/ping (for windows "localhost:8080/ping") on browser
$ go run example.go

Benchmarks

Gin uses a custom version of HttpRouter

See all benchmarks

Benchmark name (1) (2) (3) (4)
BenchmarkGin_GithubAll 43550 27364 ns/op 0 B/op 0 allocs/op
BenchmarkAce_GithubAll 40543 29670 ns/op 0 B/op 0 allocs/op
BenchmarkAero_GithubAll 57632 20648 ns/op 0 B/op 0 allocs/op
BenchmarkBear_GithubAll 9234 216179 ns/op 86448 B/op 943 allocs/op
BenchmarkBeego_GithubAll 7407 243496 ns/op 71456 B/op 609 allocs/op
BenchmarkBone_GithubAll 420 2922835 ns/op 720160 B/op 8620 allocs/op
BenchmarkChi_GithubAll 7620 238331 ns/op 87696 B/op 609 allocs/op
BenchmarkDenco_GithubAll 18355 64494 ns/op 20224 B/op 167 allocs/op
BenchmarkEcho_GithubAll 31251 38479 ns/op 0 B/op 0 allocs/op
BenchmarkGocraftWeb_GithubAll 4117 300062 ns/op 131656 B/op 1686 allocs/op
BenchmarkGoji_GithubAll 3274 416158 ns/op 56112 B/op 334 allocs/op
BenchmarkGojiv2_GithubAll 1402 870518 ns/op 352720 B/op 4321 allocs/op
BenchmarkGoJsonRest_GithubAll 2976 401507 ns/op 134371 B/op 2737 allocs/op
BenchmarkGoRestful_GithubAll 410 2913158 ns/op 910144 B/op 2938 allocs/op
BenchmarkGorillaMux_GithubAll 346 3384987 ns/op 251650 B/op 1994 allocs/op
BenchmarkGowwwRouter_GithubAll 10000 143025 ns/op 72144 B/op 501 allocs/op
BenchmarkHttpRouter_GithubAll 55938 21360 ns/op 0 B/op 0 allocs/op
BenchmarkHttpTreeMux_GithubAll 10000 153944 ns/op 65856 B/op 671 allocs/op
BenchmarkKocha_GithubAll 10000 106315 ns/op 23304 B/op 843 allocs/op
BenchmarkLARS_GithubAll 47779 25084 ns/op 0 B/op 0 allocs/op
BenchmarkMacaron_GithubAll 3266 371907 ns/op 149409 B/op 1624 allocs/op
BenchmarkMartini_GithubAll 331 3444706 ns/op 226551 B/op 2325 allocs/op
BenchmarkPat_GithubAll 273 4381818 ns/op 1483152 B/op 26963 allocs/op
BenchmarkPossum_GithubAll 10000 164367 ns/op 84448 B/op 609 allocs/op
BenchmarkR2router_GithubAll 10000 160220 ns/op 77328 B/op 979 allocs/op
BenchmarkRivet_GithubAll 14625 82453 ns/op 16272 B/op 167 allocs/op
BenchmarkTango_GithubAll 6255 279611 ns/op 63826 B/op 1618 allocs/op
BenchmarkTigerTonic_GithubAll 2008 687874 ns/op 193856 B/op 4474 allocs/op
BenchmarkTraffic_GithubAll 355 3478508 ns/op 820744 B/op 14114 allocs/op
BenchmarkVulcan_GithubAll 6885 193333 ns/op 19894 B/op 609 allocs/op
  • (1): Total Repetitions achieved in constant time, higher means more confident result
  • (2): Single Repetition Duration (ns/op), lower is better
  • (3): Heap Memory (B/op), lower is better
  • (4): Average Allocations per Repetition (allocs/op), lower is better

Gin v1. stable

  • Zero allocation router.
  • Still the fastest http router and framework. From routing to writing.
  • Complete suite of unit tests.
  • Battle tested.
  • API frozen, new releases will not break your code.

Build with jsoniter

Gin uses encoding/json as default json package but you can change to jsoniter by build from other tags.

$ go build -tags=jsoniter .

API Examples

You can find a number of ready-to-run examples at Gin examples repository.

Using GET, POST, PUT, PATCH, DELETE and OPTIONS

func main() {
	// Creates a gin router with default middleware:
	// logger and recovery (crash-free) middleware
	router := gin.Default()

	router.GET("/someGet", getting)
	router.POST("/somePost", posting)
	router.PUT("/somePut", putting)
	router.DELETE("/someDelete", deleting)
	router.PATCH("/somePatch", patching)
	router.HEAD("/someHead", head)
	router.OPTIONS("/someOptions", options)

	// By default it serves on :8080 unless a
	// PORT environment variable was defined.
	router.Run()
	// router.Run(":3000") for a hard coded port
}

Parameters in path

func main() {
	router := gin.Default()

	// This handler will match /user/john but will not match /user/ or /user
	router.GET("/user/:name", func(c *gin.Context) {
		name := c.Param("name")
		c.String(http.StatusOK, "Hello %s", name)
	})

	// However, this one will match /user/john/ and also /user/john/send
	// If no other routers match /user/john, it will redirect to /user/john/
	router.GET("/user/:name/*action", func(c *gin.Context) {
		name := c.Param("name")
		action := c.Param("action")
		message := name + " is " + action
		c.String(http.StatusOK, message)
	})

	// For each matched request Context will hold the route definition
	router.POST("/user/:name/*action", func(c *gin.Context) {
		c.FullPath() == "/user/:name/*action" // true
	})

	router.Run(":8080")
}

Querystring parameters

func main() {
	router := gin.Default()

	// Query string parameters are parsed using the existing underlying request object.
	// The request responds to a url matching:  /welcome?firstname=Jane&lastname=Doe
	router.GET("/welcome", func(c *gin.Context) {
		firstname := c.DefaultQuery("firstname", "Guest")
		lastname := c.Query("lastname") // shortcut for c.Request.URL.Query().Get("lastname")

		c.String(http.StatusOK, "Hello %s %s", firstname, lastname)
	})
	router.Run(":8080")
}

Multipart/Urlencoded Form

func main() {
	router := gin.Default()

	router.POST("/form_post", func(c *gin.Context) {
		message := c.PostForm("message")
		nick := c.DefaultPostForm("nick", "anonymous")

		c.JSON(200, gin.H{
			"status":  "posted",
			"message": message,
			"nick":    nick,
		})
	})
	router.Run(":8080")
}

Another example: query + post form

POST /post?id=1234&page=1 HTTP/1.1
Content-Type: application/x-www-form-urlencoded

name=manu&message=this_is_great
func main() {
	router := gin.Default()

	router.POST("/post", func(c *gin.Context) {

		id := c.Query("id")
		page := c.DefaultQuery("page", "0")
		name := c.PostForm("name")
		message := c.PostForm("message")

		fmt.Printf("id: %s; page: %s; name: %s; message: %s", id, page, name, message)
	})
	router.Run(":8080")
}
id: 1234; page: 1; name: manu; message: this_is_great

Map as querystring or postform parameters

POST /post?ids[a]=1234&ids[b]=hello HTTP/1.1
Content-Type: application/x-www-form-urlencoded

names[first]=thinkerou&names[second]=tianou
func main() {
	router := gin.Default()

	router.POST("/post", func(c *gin.Context) {

		ids := c.QueryMap("ids")
		names := c.PostFormMap("names")

		fmt.Printf("ids: %v; names: %v", ids, names)
	})
	router.Run(":8080")
}
ids: map[b:hello a:1234]; names: map[second:tianou first:thinkerou]

Upload files

Single file

References issue #774 and detail example code.

file.Filename SHOULD NOT be trusted. See Content-Disposition on MDN and #1693

The filename is always optional and must not be used blindly by the application: path information should be stripped, and conversion to the server file system rules should be done.

func main() {
	router := gin.Default()
	// Set a lower memory limit for multipart forms (default is 32 MiB)
	router.MaxMultipartMemory = 8 << 20  // 8 MiB
	router.POST("/upload", func(c *gin.Context) {
		// single file
		file, _ := c.FormFile("file")
		log.Println(file.Filename)

		// Upload the file to specific dst.
		c.SaveUploadedFile(file, dst)

		c.String(http.StatusOK, fmt.Sprintf("'%s' uploaded!", file.Filename))
	})
	router.Run(":8080")
}

How to curl:

curl -X POST http://localhost:8080/upload \
  -F "file=@/Users/appleboy/test.zip" \
  -H "Content-Type: multipart/form-data"

Multiple files

See the detail example code.

func main() {
	router := gin.Default()
	// Set a lower memory limit for multipart forms (default is 32 MiB)
	router.MaxMultipartMemory = 8 << 20  // 8 MiB
	router.POST("/upload", func(c *gin.Context) {
		// Multipart form
		form, _ := c.MultipartForm()
		files := form.File["upload[]"]

		for _, file := range files {
			log.Println(file.Filename)

			// Upload the file to specific dst.
			c.SaveUploadedFile(file, dst)
		}
		c.String(http.StatusOK, fmt.Sprintf("%d files uploaded!", len(files)))
	})
	router.Run(":8080")
}

How to curl:

curl -X POST http://localhost:8080/upload \
  -F "upload[]=@/Users/appleboy/test1.zip" \
  -F "upload[]=@/Users/appleboy/test2.zip" \
  -H "Content-Type: multipart/form-data"

Grouping routes

func main() {
	router := gin.Default()

	// Simple group: v1
	v1 := router.Group("/v1")
	{
		v1.POST("/login", loginEndpoint)
		v1.POST("/submit", submitEndpoint)
		v1.POST("/read", readEndpoint)
	}

	// Simple group: v2
	v2 := router.Group("/v2")
	{
		v2.POST("/login", loginEndpoint)
		v2.POST("/submit", submitEndpoint)
		v2.POST("/read", readEndpoint)
	}

	router.Run(":8080")
}

Blank Gin without middleware by default

Use

r := gin.New()

instead of

// Default With the Logger and Recovery middleware already attached
r := gin.Default()

Using middleware

func main() {
	// Creates a router without any middleware by default
	r := gin.New()

	// Global middleware
	// Logger middleware will write the logs to gin.DefaultWriter even if you set with GIN_MODE=release.
	// By default gin.DefaultWriter = os.Stdout
	r.Use(gin.Logger())

	// Recovery middleware recovers from any panics and writes a 500 if there was one.
	r.Use(gin.Recovery())

	// Per route middleware, you can add as many as you desire.
	r.GET("/benchmark", MyBenchLogger(), benchEndpoint)

	// Authorization group
	// authorized := r.Group("/", AuthRequired())
	// exactly the same as:
	authorized := r.Group("/")
	// per group middleware! in this case we use the custom created
	// AuthRequired() middleware just in the "authorized" group.
	authorized.Use(AuthRequired())
	{
		authorized.POST("/login", loginEndpoint)
		authorized.POST("/submit", submitEndpoint)
		authorized.POST("/read", readEndpoint)

		// nested group
		testing := authorized.Group("testing")
		testing.GET("/analytics", analyticsEndpoint)
	}

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

Custom Recovery behavior

func main() {
	// Creates a router without any middleware by default
	r := gin.New()

	// Global middleware
	// Logger middleware will write the logs to gin.DefaultWriter even if you set with GIN_MODE=release.
	// By default gin.DefaultWriter = os.Stdout
	r.Use(gin.Logger())

	// Recovery middleware recovers from any panics and writes a 500 if there was one.
	r.Use(gin.CustomRecovery(func(c *gin.Context, recovered interface{}) {
		if err, ok := recovered.(string); ok {
			c.String(http.StatusInternalServerError, fmt.Sprintf("error: %s", err))
		}
		c.AbortWithStatus(http.StatusInternalServerError)
	}))

	r.GET("/panic", func(c *gin.Context) {
		// panic with a string -- the custom middleware could save this to a database or report it to the user
		panic("foo")
	})

	r.GET("/", func(c *gin.Context) {
		c.String(http.StatusOK, "ohai")
	})

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

How to write log file

func main() {
    // Disable Console Color, you don't need console color when writing the logs to file.
    gin.DisableConsoleColor()

    // Logging to a file.
    f, _ := os.Create("gin.log")
    gin.DefaultWriter = io.MultiWriter(f)

    // Use the following code if you need to write the logs to file and console at the same time.
    // gin.DefaultWriter = io.MultiWriter(f, os.Stdout)

    router := gin.Default()
    router.GET("/ping", func(c *gin.Context) {
        c.String(200, "pong")
    })

    router.Run(":8080")
}

Custom Log Format

func main() {
	router := gin.New()

	// LoggerWithFormatter middleware will write the logs to gin.DefaultWriter
	// By default gin.DefaultWriter = os.Stdout
	router.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string {

		// your custom format
		return fmt.Sprintf("%s - [%s] \"%s %s %s %d %s \"%s\" %s\"\n",
				param.ClientIP,
				param.TimeStamp.Format(time.RFC1123),
				param.Method,
				param.Path,
				param.Request.Proto,
				param.StatusCode,
				param.Latency,
				param.Request.UserAgent(),
				param.ErrorMessage,
		)
	}))
	router.Use(gin.Recovery())

	router.GET("/ping", func(c *gin.Context) {
		c.String(200, "pong")
	})

	router.Run(":8080")
}

Sample Output

::1 - [Fri, 07 Dec 2018 17:04:38 JST] "GET /ping HTTP/1.1 200 122.767µs "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36" "

Controlling Log output coloring

By default, logs output on console should be colorized depending on the detected TTY.

Never colorize logs:

func main() {
    // Disable log's color
    gin.DisableConsoleColor()

    // Creates a gin router with default middleware:
    // logger and recovery (crash-free) middleware
    router := gin.Default()

    router.GET("/ping", func(c *gin.Context) {
        c.String(200, "pong")
    })

    router.Run(":8080")
}

Always colorize logs:

func main() {
    // Force log's color
    gin.ForceConsoleColor()

    // Creates a gin router with default middleware:
    // logger and recovery (crash-free) middleware
    router := gin.Default()

    router.GET("/ping", func(c *gin.Context) {
        c.String(200, "pong")
    })

    router.Run(":8080")
}

Model binding and validation

To bind a request body into a type, use model binding. We currently support binding of JSON, XML, YAML and standard form values (foo=bar&boo=baz).

Gin uses go-playground/validator/v10 for validation. Check the full docs on tags usage here.

Note that you need to set the corresponding binding tag on all fields you want to bind. For example, when binding from JSON, set json:"fieldname".

Also, Gin provides two sets of methods for binding:

  • Type - Must bind
    • Methods - Bind, BindJSON, BindXML, BindQuery, BindYAML, BindHeader
    • Behavior - These methods use MustBindWith under the hood. If there is a binding error, the request is aborted with c.AbortWithError(400, err).SetType(ErrorTypeBind). This sets the response status code to 400 and the Content-Type header is set to text/plain; charset=utf-8. Note that if you try to set the response code after this, it will result in a warning [GIN-debug] [WARNING] Headers were already written. Wanted to override status code 400 with 422. If you wish to have greater control over the behavior, consider using the ShouldBind equivalent method.
  • Type - Should bind
    • Methods - ShouldBind, ShouldBindJSON, ShouldBindXML, ShouldBindQuery, ShouldBindYAML, ShouldBindHeader
    • Behavior - These methods use ShouldBindWith under the hood. If there is a binding error, the error is returned and it is the developer's responsibility to handle the request and error appropriately.

When using the Bind-method, Gin tries to infer the binder depending on the Content-Type header. If you are sure what you are binding, you can use MustBindWith or ShouldBindWith.

You can also specify that specific fields are required. If a field is decorated with binding:"required" and has a empty value when binding, an error will be returned.

// Binding from JSON
type Login struct {
	User     string `form:"user" json:"user" xml:"user"  binding:"required"`
	Password string `form:"password" json:"password" xml:"password" binding:"required"`
}

func main() {
	router := gin.Default()

	// Example for binding JSON ({"user": "manu", "password": "123"})
	router.POST("/loginJSON", func(c *gin.Context) {
		var json Login
		if err := c.ShouldBindJSON(&json); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}

		if json.User != "manu" || json.Password != "123" {
			c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"})
			return
		}

		c.JSON(http.StatusOK, gin.H{"status": "you are logged in"})
	})

	// Example for binding XML (
	//	
	//	
	//		user
	//		123
	//	)
	router.POST("/loginXML", func(c *gin.Context) {
		var xml Login
		if err := c.ShouldBindXML(&xml); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}

		if xml.User != "manu" || xml.Password != "123" {
			c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"})
			return
		}

		c.JSON(http.StatusOK, gin.H{"status": "you are logged in"})
	})

	// Example for binding a HTML form (user=manu&password=123)
	router.POST("/loginForm", func(c *gin.Context) {
		var form Login
		// This will infer what binder to use depending on the content-type header.
		if err := c.ShouldBind(&form); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}

		if form.User != "manu" || form.Password != "123" {
			c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"})
			return
		}

		c.JSON(http.StatusOK, gin.H{"status": "you are logged in"})
	})

	// Listen and serve on 0.0.0.0:8080
	router.Run(":8080")
}

Sample request

$ curl -v -X POST \
  http://localhost:8080/loginJSON \
  -H 'content-type: application/json' \
  -d '{ "user": "manu" }'
> POST /loginJSON HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.51.0
> Accept: */*
> content-type: application/json
> Content-Length: 18
>
* upload completely sent off: 18 out of 18 bytes
< HTTP/1.1 400 Bad Request
< Content-Type: application/json; charset=utf-8
< Date: Fri, 04 Aug 2017 03:51:31 GMT
< Content-Length: 100
<
{"error":"Key: 'Login.Password' Error:Field validation for 'Password' failed on the 'required' tag"}

Skip validate

When running the above example using the above the curl command, it returns error. Because the example use binding:"required" for Password. If use binding:"-" for Password, then it will not return error when running the above example again.

Custom Validators

It is also possible to register custom validators. See the example code.

package main

import (
	"net/http"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/gin-gonic/gin/binding"
	"github.com/go-playground/validator/v10"
)

// Booking contains binded and validated data.
type Booking struct {
	CheckIn  time.Time `form:"check_in" binding:"required,bookabledate" time_format:"2006-01-02"`
	CheckOut time.Time `form:"check_out" binding:"required,gtfield=CheckIn" time_format:"2006-01-02"`
}

var bookableDate validator.Func = func(fl validator.FieldLevel) bool {
	date, ok := fl.Field().Interface().(time.Time)
	if ok {
		today := time.Now()
		if today.After(date) {
			return false
		}
	}
	return true
}

func main() {
	route := gin.Default()

	if v, ok := binding.Validator.Engine().(*validator.Validate); ok {
		v.RegisterValidation("bookabledate", bookableDate)
	}

	route.GET("/bookable", getBookable)
	route.Run(":8085")
}

func getBookable(c *gin.Context) {
	var b Booking
	if err := c.ShouldBindWith(&b, binding.Query); err == nil {
		c.JSON(http.StatusOK, gin.H{"message": "Booking dates are valid!"})
	} else {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
	}
}
$ curl "localhost:8085/bookable?check_in=2030-04-16&check_out=2030-04-17"
{"message":"Booking dates are valid!"}

$ curl "localhost:8085/bookable?check_in=2030-03-10&check_out=2030-03-09"
{"error":"Key: 'Booking.CheckOut' Error:Field validation for 'CheckOut' failed on the 'gtfield' tag"}

$ curl "localhost:8085/bookable?check_in=2000-03-09&check_out=2000-03-10"
{"error":"Key: 'Booking.CheckIn' Error:Field validation for 'CheckIn' failed on the 'bookabledate' tag"}%

Struct level validations can also be registered this way. See the struct-lvl-validation example to learn more.

Only Bind Query String

ShouldBindQuery function only binds the query params and not the post data. See the detail information.

package main

import (
	"log"

	"github.com/gin-gonic/gin"
)

type Person struct {
	Name    string `form:"name"`
	Address string `form:"address"`
}

func main() {
	route := gin.Default()
	route.Any("/testing", startPage)
	route.Run(":8085")
}

func startPage(c *gin.Context) {
	var person Person
	if c.ShouldBindQuery(&person) == nil {
		log.Println("====== Only Bind By Query String ======")
		log.Println(person.Name)
		log.Println(person.Address)
	}
	c.String(200, "Success")
}

Bind Query String or Post Data

See the detail information.

package main

import (
	"log"
	"time"

	"github.com/gin-gonic/gin"
)

type Person struct {
        Name       string    `form:"name"`
        Address    string    `form:"address"`
        Birthday   time.Time `form:"birthday" time_format:"2006-01-02" time_utc:"1"`
        CreateTime time.Time `form:"createTime" time_format:"unixNano"`
        UnixTime   time.Time `form:"unixTime" time_format:"unix"`
}

func main() {
	route := gin.Default()
	route.GET("/testing", startPage)
	route.Run(":8085")
}

func startPage(c *gin.Context) {
	var person Person
	// If `GET`, only `Form` binding engine (`query`) used.
	// If `POST`, first checks the `content-type` for `JSON` or `XML`, then uses `Form` (`form-data`).
	// See more at https://github.com/gin-gonic/gin/blob/master/binding/binding.go#L48
        if c.ShouldBind(&person) == nil {
                log.Println(person.Name)
                log.Println(person.Address)
                log.Println(person.Birthday)
                log.Println(person.CreateTime)
                log.Println(person.UnixTime)
        }

	c.String(200, "Success")
}

Test it with:

$ curl -X GET "localhost:8085/testing?name=appleboy&address=xyz&birthday=1992-03-15&createTime=1562400033000000123&unixTime=1562400033"

Bind Uri

See the detail information.

package main

import "github.com/gin-gonic/gin"

type Person struct {
	ID string `uri:"id" binding:"required,uuid"`
	Name string `uri:"name" binding:"required"`
}

func main() {
	route := gin.Default()
	route.GET("/:name/:id", func(c *gin.Context) {
		var person Person
		if err := c.ShouldBindUri(&person); err != nil {
			c.JSON(400, gin.H{"msg": err})
			return
		}
		c.JSON(200, gin.H{"name": person.Name, "uuid": person.ID})
	})
	route.Run(":8088")
}

Test it with:

$ curl -v localhost:8088/thinkerou/987fbc97-4bed-5078-9f07-9141ba07c9f3
$ curl -v localhost:8088/thinkerou/not-uuid

Bind Header

package main

import (
	"fmt"
	"github.com/gin-gonic/gin"
)

type testHeader struct {
	Rate   int    `header:"Rate"`
	Domain string `header:"Domain"`
}

func main() {
	r := gin.Default()
	r.GET("/", func(c *gin.Context) {
		h := testHeader{}

		if err := c.ShouldBindHeader(&h); err != nil {
			c.JSON(200, err)
		}

		fmt.Printf("%#v\n", h)
		c.JSON(200, gin.H{"Rate": h.Rate, "Domain": h.Domain})
	})

	r.Run()

// client
// curl -H "rate:300" -H "domain:music" 127.0.0.1:8080/
// output
// {"Domain":"music","Rate":300}
}

Bind HTML checkboxes

See the detail information

main.go

...

type myForm struct {
    Colors []string `form:"colors[]"`
}

...

func formHandler(c *gin.Context) {
    var fakeForm myForm
    c.ShouldBind(&fakeForm)
    c.JSON(200, gin.H{"color": fakeForm.Colors})
}

...

form.html

<form action="/" method="POST">
    <p>Check some colorsp>
    <label for="red">Redlabel>
    <input type="checkbox" name="colors[]" value="red" id="red">
    <label for="green">Greenlabel>
    <input type="checkbox" name="colors[]" value="green" id="green">
    <label for="blue">Bluelabel>
    <input type="checkbox" name="colors[]" value="blue" id="blue">
    <input type="submit">
form>

result:

{"color":["red","green","blue"]}

Multipart/Urlencoded binding

type ProfileForm struct {
	Name   string                `form:"name" binding:"required"`
	Avatar *multipart.FileHeader `form:"avatar" binding:"required"`

	// or for multiple files
	// Avatars []*multipart.FileHeader `form:"avatar" binding:"required"`
}

func main() {
	router := gin.Default()
	router.POST("/profile", func(c *gin.Context) {
		// you can bind multipart form with explicit binding declaration:
		// c.ShouldBindWith(&form, binding.Form)
		// or you can simply use autobinding with ShouldBind method:
		var form ProfileForm
		// in this case proper binding will be automatically selected
		if err := c.ShouldBind(&form); err != nil {
			c.String(http.StatusBadRequest, "bad request")
			return
		}

		err := c.SaveUploadedFile(form.Avatar, form.Avatar.Filename)
		if err != nil {
			c.String(http.StatusInternalServerError, "unknown error")
			return
		}

		// db.Save(&form)

		c.String(http.StatusOK, "ok")
	})
	router.Run(":8080")
}

Test it with:

$ curl -X POST -v --form name=user --form "avatar=@./avatar.png" http://localhost:8080/profile

XML, JSON, YAML and ProtoBuf rendering

func main() {
	r := gin.Default()

	// gin.H is a shortcut for map[string]interface{}
	r.GET("/someJSON", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
	})

	r.GET("/moreJSON", func(c *gin.Context) {
		// You also can use a struct
		var msg struct {
			Name    string `json:"user"`
			Message string
			Number  int
		}
		msg.Name = "Lena"
		msg.Message = "hey"
		msg.Number = 123
		// Note that msg.Name becomes "user" in the JSON
		// Will output  :   {"user": "Lena", "Message": "hey", "Number": 123}
		c.JSON(http.StatusOK, msg)
	})

	r.GET("/someXML", func(c *gin.Context) {
		c.XML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
	})

	r.GET("/someYAML", func(c *gin.Context) {
		c.YAML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
	})

	r.GET("/someProtoBuf", func(c *gin.Context) {
		reps := []int64{int64(1), int64(2)}
		label := "test"
		// The specific definition of protobuf is written in the testdata/protoexample file.
		data := &protoexample.Test{
			Label: &label,
			Reps:  reps,
		}
		// Note that data becomes binary data in the response
		// Will output protoexample.Test protobuf serialized data
		c.ProtoBuf(http.StatusOK, data)
	})

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

SecureJSON

Using SecureJSON to prevent json hijacking. Default prepends "while(1)," to response body if the given struct is array values.

func main() {
	r := gin.Default()

	// You can also use your own secure json prefix
	// r.SecureJsonPrefix(")]}',\n")

	r.GET("/someJSON", func(c *gin.Context) {
		names := []string{"lena", "austin", "foo"}

		// Will output  :   while(1);["lena","austin","foo"]
		c.SecureJSON(http.StatusOK, names)
	})

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

JSONP

Using JSONP to request data from a server in a different domain. Add callback to response body if the query parameter callback exists.

func main() {
	r := gin.Default()

	r.GET("/JSONP", func(c *gin.Context) {
		data := gin.H{
			"foo": "bar",
		}

		//callback is x
		// Will output  :   x({\"foo\":\"bar\"})
		c.JSONP(http.StatusOK, data)
	})

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")

        // client
        // curl http://127.0.0.1:8080/JSONP?callback=x
}

AsciiJSON

Using AsciiJSON to Generates ASCII-only JSON with escaped non-ASCII characters.

func main() {
	r := gin.Default()

	r.GET("/someJSON", func(c *gin.Context) {
		data := gin.H{
			"lang": "GO语言",
			"tag":  "
"
, } // will output : {"lang":"GO\u8bed\u8a00","tag":"\u003cbr\u003e"} c.AsciiJSON(http.StatusOK, data) }) // Listen and serve on 0.0.0.0:8080 r.Run(":8080") }

PureJSON

Normally, JSON replaces special HTML characters with their unicode entities, e.g. < becomes \u003c. If you want to encode such characters literally, you can use PureJSON instead. This feature is unavailable in Go 1.6 and lower.

func main() {
	r := gin.Default()

	// Serves unicode entities
	r.GET("/json", func(c *gin.Context) {
		c.JSON(200, gin.H{
			"html": "Hello, world!",
		})
	})

	// Serves literal characters
	r.GET("/purejson", func(c *gin.Context) {
		c.PureJSON(200, gin.H{
			"html": "Hello, world!",
		})
	})

	// listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

Serving static files

func main() {
	router := gin.Default()
	router.Static("/assets", "./assets")
	router.StaticFS("/more_static", http.Dir("my_file_system"))
	router.StaticFile("/favicon.ico", "./resources/favicon.ico")

	// Listen and serve on 0.0.0.0:8080
	router.Run(":8080")
}

Serving data from file

func main() {
	router := gin.Default()

	router.GET("/local/file", func(c *gin.Context) {
		c.File("local/file.go")
	})

	var fs http.FileSystem = // ...
	router.GET("/fs/file", func(c *gin.Context) {
		c.FileFromFS("fs/file.go", fs)
	})
}

Serving data from reader

func main() {
	router := gin.Default()
	router.GET("/someDataFromReader", func(c *gin.Context) {
		response, err := http.Get("https://raw.githubusercontent.com/gin-gonic/logo/master/color.png")
		if err != nil || response.StatusCode != http.StatusOK {
			c.Status(http.StatusServiceUnavailable)
			return
		}

		reader := response.Body
 		defer reader.Close()
		contentLength := response.ContentLength
		contentType := response.Header.Get("Content-Type")

		extraHeaders := map[string]string{
			"Content-Disposition": `attachment; filename="gopher.png"`,
		}

		c.DataFromReader(http.StatusOK, contentLength, contentType, reader, extraHeaders)
	})
	router.Run(":8080")
}

HTML rendering

Using LoadHTMLGlob() or LoadHTMLFiles()

func main() {
	router := gin.Default()
	router.LoadHTMLGlob("templates/*")
	//router.LoadHTMLFiles("templates/template1.html", "templates/template2.html")
	router.GET("/index", func(c *gin.Context) {
		c.HTML(http.StatusOK, "index.tmpl", gin.H{
			"title": "Main website",
		})
	})
	router.Run(":8080")
}

templates/index.tmpl

<html>
	<h1>
		{{ .title }}
	h1>
html>

Using templates with same name in different directories

func main() {
	router := gin.Default()
	router.LoadHTMLGlob("templates/**/*")
	router.GET("/posts/index", func(c *gin.Context) {
		c.HTML(http.StatusOK, "posts/index.tmpl", gin.H{
			"title": "Posts",
		})
	})
	router.GET("/users/index", func(c *gin.Context) {
		c.HTML(http.StatusOK, "users/index.tmpl", gin.H{
			"title": "Users",
		})
	})
	router.Run(":8080")
}

templates/posts/index.tmpl

{{ define "posts/index.tmpl" }}
<html><h1>
	{{ .title }}
h1>
<p>Using posts/index.tmplp>
html>
{{ end }}

templates/users/index.tmpl

{{ define "users/index.tmpl" }}
<html><h1>
	{{ .title }}
h1>
<p>Using users/index.tmplp>
html>
{{ end }}

Custom Template renderer

You can also use your own html template render

import "html/template"

func main() {
	router := gin.Default()
	html := template.Must(template.ParseFiles("file1", "file2"))
	router.SetHTMLTemplate(html)
	router.Run(":8080")
}

Custom Delimiters

You may use custom delims

	r := gin.Default()
	r.Delims("{[{", "}]}")
	r.LoadHTMLGlob("/path/to/templates")

Custom Template Funcs

See the detail example code.

main.go

import (
    "fmt"
    "html/template"
    "net/http"
    "time"

    "github.com/gin-gonic/gin"
)

func formatAsDate(t time.Time) string {
    year, month, day := t.Date()
    return fmt.Sprintf("%d%02d/%02d", year, month, day)
}

func main() {
    router := gin.Default()
    router.Delims("{[{", "}]}")
    router.SetFuncMap(template.FuncMap{
        "formatAsDate": formatAsDate,
    })
    router.LoadHTMLFiles("./testdata/template/raw.tmpl")

    router.GET("/raw", func(c *gin.Context) {
        c.HTML(http.StatusOK, "raw.tmpl", gin.H{
            "now": time.Date(2017, 07, 01, 0, 0, 0, 0, time.UTC),
        })
    })

    router.Run(":8080")
}

raw.tmpl

Date: {[{.now | formatAsDate}]}

Result:

Date: 2017/07/01

Multitemplate

Gin allow by default use only one html.Template. Check a multitemplate render for using features like go 1.6 block template.

Redirects

Issuing a HTTP redirect is easy. Both internal and external locations are supported.

r.GET("/test", func(c *gin.Context) {
	c.Redirect(http.StatusMovedPermanently, "http://www.google.com/")
})

Issuing a HTTP redirect from POST. Refer to issue: #444

r.POST("/test", func(c *gin.Context) {
	c.Redirect(http.StatusFound, "/foo")
})

Issuing a Router redirect, use HandleContext like below.

r.GET("/test", func(c *gin.Context) {
    c.Request.URL.Path = "/test2"
    r.HandleContext(c)
})
r.GET("/test2", func(c *gin.Context) {
    c.JSON(200, gin.H{"hello": "world"})
})

Custom Middleware

func Logger() gin.HandlerFunc {
	return func(c *gin.Context) {
		t := time.Now()

		// Set example variable
		c.Set("example", "12345")

		// before request

		c.Next()

		// after request
		latency := time.Since(t)
		log.Print(latency)

		// access the status we are sending
		status := c.Writer.Status()
		log.Println(status)
	}
}

func main() {
	r := gin.New()
	r.Use(Logger())

	r.GET("/test", func(c *gin.Context) {
		example := c.MustGet("example").(string)

		// it would print: "12345"
		log.Println(example)
	})

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

Using BasicAuth() middleware

// simulate some private data
var secrets = gin.H{
	"foo":    gin.H{"email": "[email protected]", "phone": "123433"},
	"austin": gin.H{"email": "[email protected]", "phone": "666"},
	"lena":   gin.H{"email": "[email protected]", "phone": "523443"},
}

func main() {
	r := gin.Default()

	// Group using gin.BasicAuth() middleware
	// gin.Accounts is a shortcut for map[string]string
	authorized := r.Group("/admin", gin.BasicAuth(gin.Accounts{
		"foo":    "bar",
		"austin": "1234",
		"lena":   "hello2",
		"manu":   "4321",
	}))

	// /admin/secrets endpoint
	// hit "localhost:8080/admin/secrets
	authorized.GET("/secrets", func(c *gin.Context) {
		// get user, it was set by the BasicAuth middleware
		user := c.MustGet(gin.AuthUserKey).(string)
		if secret, ok := secrets[user]; ok {
			c.JSON(http.StatusOK, gin.H{"user": user, "secret": secret})
		} else {
			c.JSON(http.StatusOK, gin.H{"user": user, "secret": "NO SECRET :("})
		}
	})

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

Goroutines inside a middleware

When starting new Goroutines inside a middleware or handler, you SHOULD NOT use the original context inside it, you have to use a read-only copy.

func main() {
	r := gin.Default()

	r.GET("/long_async", func(c *gin.Context) {
		// create copy to be used inside the goroutine
		cCp := c.Copy()
		go func() {
			// simulate a long task with time.Sleep(). 5 seconds
			time.Sleep(5 * time.Second)

			// note that you are using the copied context "cCp", IMPORTANT
			log.Println("Done! in path " + cCp.Request.URL.Path)
		}()
	})

	r.GET("/long_sync", func(c *gin.Context) {
		// simulate a long task with time.Sleep(). 5 seconds
		time.Sleep(5 * time.Second)

		// since we are NOT using a goroutine, we do not have to copy the context
		log.Println("Done! in path " + c.Request.URL.Path)
	})

	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}

Custom HTTP configuration

Use http.ListenAndServe() directly, like this:

func main() {
	router := gin.Default()
	http.ListenAndServe(":8080", router)
}

or

func main() {
	router := gin.Default()

	s := &http.Server{
		Addr:           ":8080",
		Handler:        router,
		ReadTimeout:    10 * time.Second,
		WriteTimeout:   10 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}
	s.ListenAndServe()
}

Support Let's Encrypt

example for 1-line LetsEncrypt HTTPS servers.

package main

import (
	"log"

	"github.com/gin-gonic/autotls"
	"github.com/gin-gonic/gin"
)

func main() {
	r := gin.Default()

	// Ping handler
	r.GET("/ping", func(c *gin.Context) {
		c.String(200, "pong")
	})

	log.Fatal(autotls.Run(r, "example1.com", "example2.com"))
}

example for custom autocert manager.

package main

import (
	"log"

	"github.com/gin-gonic/autotls"
	"github.com/gin-gonic/gin"
	"golang.org/x/crypto/acme/autocert"
)

func main() {
	r := gin.Default()

	// Ping handler
	r.GET("/ping", func(c *gin.Context) {
		c.String(200, "pong")
	})

	m := autocert.Manager{
		Prompt:     autocert.AcceptTOS,
		HostPolicy: autocert.HostWhitelist("example1.com", "example2.com"),
		Cache:      autocert.DirCache("/var/www/.cache"),
	}

	log.Fatal(autotls.RunWithManager(r, &m))
}

Run multiple service using Gin

See the question and try the following example:

package main

import (
	"log"
	"net/http"
	"time"

	"github.com/gin-gonic/gin"
	"golang.org/x/sync/errgroup"
)

var (
	g errgroup.Group
)

func router01() http.Handler {
	e := gin.New()
	e.Use(gin.Recovery())
	e.GET("/", func(c *gin.Context) {
		c.JSON(
			http.StatusOK,
			gin.H{
				"code":  http.StatusOK,
				"error": "Welcome server 01",
			},
		)
	})

	return e
}

func router02() http.Handler {
	e := gin.New()
	e.Use(gin.Recovery())
	e.GET("/", func(c *gin.Context) {
		c.JSON(
			http.StatusOK,
			gin.H{
				"code":  http.StatusOK,
				"error": "Welcome server 02",
			},
		)
	})

	return e
}

func main() {
	server01 := &http.Server{
		Addr:         ":8080",
		Handler:      router01(),
		ReadTimeout:  5 * time.Second,
		WriteTimeout: 10 * time.Second,
	}

	server02 := &http.Server{
		Addr:         ":8081",
		Handler:      router02(),
		ReadTimeout:  5 * time.Second,
		WriteTimeout: 10 * time.Second,
	}

	g.Go(func() error {
		err := server01.ListenAndServe()
		if err != nil && err != http.ErrServerClosed {
			log.Fatal(err)
		}
		return err
	})

	g.Go(func() error {
		err := server02.ListenAndServe()
		if err != nil && err != http.ErrServerClosed {
			log.Fatal(err)
		}
		return err
	})

	if err := g.Wait(); err != nil {
		log.Fatal(err)
	}
}

Graceful shutdown or restart

There are a few approaches you can use to perform a graceful shutdown or restart. You can make use of third-party packages specifically built for that, or you can manually do the same with the functions and methods from the built-in packages.

Third-party packages

We can use fvbock/endless to replace the default ListenAndServe. Refer to issue #296 for more details.

router := gin.Default()
router.GET("/", handler)
// [...]
endless.ListenAndServe(":4242", router)

Alternatives:

  • manners: A polite Go HTTP server that shuts down gracefully.
  • graceful: Graceful is a Go package enabling graceful shutdown of an http.Handler server.
  • grace: Graceful restart & zero downtime deploy for Go servers.

Manually

In case you are using Go 1.8 or a later version, you may not need to use those libraries. Consider using http.Server's built-in Shutdown() method for graceful shutdowns. The example below describes its usage, and we've got more examples using gin here.

// +build go1.8

package main

import (
	"context"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/gin-gonic/gin"
)

func main() {
	router := gin.Default()
	router.GET("/", func(c *gin.Context) {
		time.Sleep(5 * time.Second)
		c.String(http.StatusOK, "Welcome Gin Server")
	})

	srv := &http.Server{
		Addr:    ":8080",
		Handler: router,
	}

	// Initializing the server in a goroutine so that
	// it won't block the graceful shutdown handling below
	go func() {
		if err := srv.ListenAndServe(); err != nil && errors.Is(err, http.ErrServerClosed) {
			log.Printf("listen: %s\n", err)
		}
	}()

	// Wait for interrupt signal to gracefully shutdown the server with
	// a timeout of 5 seconds.
	quit := make(chan os.Signal)
	// kill (no param) default send syscall.SIGTERM
	// kill -2 is syscall.SIGINT
	// kill -9 is syscall.SIGKILL but can't be catch, so don't need add it
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
	<-quit
	log.Println("Shutting down server...")

	// The context is used to inform the server it has 5 seconds to finish
	// the request it is currently handling
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	if err := srv.Shutdown(ctx); err != nil {
		log.Fatal("Server forced to shutdown:", err)
	}

	log.Println("Server exiting")
}

Build a single binary with templates

You can build a server into a single binary containing templates by using go-assets.

func main() {
	r := gin.New()

	t, err := loadTemplate()
	if err != nil {
		panic(err)
	}
	r.SetHTMLTemplate(t)

	r.GET("/", func(c *gin.Context) {
		c.HTML(http.StatusOK, "/html/index.tmpl",nil)
	})
	r.Run(":8080")
}

// loadTemplate loads templates embedded by go-assets-builder
func loadTemplate() (*template.Template, error) {
	t := template.New("")
	for name, file := range Assets.Files {
		defer file.Close()
		if file.IsDir() || !strings.HasSuffix(name, ".tmpl") {
			continue
		}
		h, err := ioutil.ReadAll(file)
		if err != nil {
			return nil, err
		}
		t, err = t.New(name).Parse(string(h))
		if err != nil {
			return nil, err
		}
	}
	return t, nil
}

See a complete example in the https://github.com/gin-gonic/examples/tree/master/assets-in-binary directory.

Bind form-data request with custom struct

The follow example using custom struct:

type StructA struct {
    FieldA string `form:"field_a"`
}

type StructB struct {
    NestedStruct StructA
    FieldB string `form:"field_b"`
}

type StructC struct {
    NestedStructPointer *StructA
    FieldC string `form:"field_c"`
}

type StructD struct {
    NestedAnonyStruct struct {
        FieldX string `form:"field_x"`
    }
    FieldD string `form:"field_d"`
}

func GetDataB(c *gin.Context) {
    var b StructB
    c.Bind(&b)
    c.JSON(200, gin.H{
        "a": b.NestedStruct,
        "b": b.FieldB,
    })
}

func GetDataC(c *gin.Context) {
    var b StructC
    c.Bind(&b)
    c.JSON(200, gin.H{
        "a": b.NestedStructPointer,
        "c": b.FieldC,
    })
}

func GetDataD(c *gin.Context) {
    var b StructD
    c.Bind(&b)
    c.JSON(200, gin.H{
        "x": b.NestedAnonyStruct,
        "d": b.FieldD,
    })
}

func main() {
    r := gin.Default()
    r.GET("/getb", GetDataB)
    r.GET("/getc", GetDataC)
    r.GET("/getd", GetDataD)

    r.Run()
}

Using the command curl command result:

$ curl "http://localhost:8080/getb?field_a=hello&field_b=world"
{"a":{"FieldA":"hello"},"b":"world"}
$ curl "http://localhost:8080/getc?field_a=hello&field_c=world"
{"a":{"FieldA":"hello"},"c":"world"}
$ curl "http://localhost:8080/getd?field_x=hello&field_d=world"
{"d":"world","x":{"FieldX":"hello"}}

Try to bind body into different structs

The normal methods for binding request body consumes c.Request.Body and they cannot be called multiple times.

type formA struct {
  Foo string `json:"foo" xml:"foo" binding:"required"`
}

type formB struct {
  Bar string `json:"bar" xml:"bar" binding:"required"`
}

func SomeHandler(c *gin.Context) {
  objA := formA{}
  objB := formB{}
  // This c.ShouldBind consumes c.Request.Body and it cannot be reused.
  if errA := c.ShouldBind(&objA); errA == nil {
    c.String(http.StatusOK, `the body should be formA`)
  // Always an error is occurred by this because c.Request.Body is EOF now.
  } else if errB := c.ShouldBind(&objB); errB == nil {
    c.String(http.StatusOK, `the body should be formB`)
  } else {
    ...
  }
}

For this, you can use c.ShouldBindBodyWith.

func SomeHandler(c *gin.Context) {
  objA := formA{}
  objB := formB{}
  // This reads c.Request.Body and stores the result into the context.
  if errA := c.ShouldBindBodyWith(&objA, binding.JSON); errA == nil {
    c.String(http.StatusOK, `the body should be formA`)
  // At this time, it reuses body stored in the context.
  } else if errB := c.ShouldBindBodyWith(&objB, binding.JSON); errB == nil {
    c.String(http.StatusOK, `the body should be formB JSON`)
  // And it can accepts other formats
  } else if errB2 := c.ShouldBindBodyWith(&objB, binding.XML); errB2 == nil {
    c.String(http.StatusOK, `the body should be formB XML`)
  } else {
    ...
  }
}
  • c.ShouldBindBodyWith stores body into the context before binding. This has a slight impact to performance, so you should not use this method if you are enough to call binding at once.
  • This feature is only needed for some formats -- JSON, XML, MsgPack, ProtoBuf. For other formats, Query, Form, FormPost, FormMultipart, can be called by c.ShouldBind() multiple times without any damage to performance (See #1341).

http2 server push

http.Pusher is supported only go1.8+. See the golang blog for detail information.

package main

import (
	"html/template"
	"log"

	"github.com/gin-gonic/gin"
)

var html = template.Must(template.New("https").Parse(`


  Https Test
  


  

Welcome, Ginner!

`)) func main() { r := gin.Default() r.Static("/assets", "./assets") r.SetHTMLTemplate(html) r.GET("/", func(c *gin.Context) { if pusher := c.Writer.Pusher(); pusher != nil { // use pusher.Push() to do server push if err := pusher.Push("/assets/app.js", nil); err != nil { log.Printf("Failed to push: %v", err) } } c.HTML(200, "https", gin.H{ "status": "success", }) }) // Listen and Server in https://127.0.0.1:8080 r.RunTLS(":8080", "./testdata/server.pem", "./testdata/server.key") }

Define format for the log of routes

The default log of routes is:

[GIN-debug] POST   /foo                      --> main.main.func1 (3 handlers)
[GIN-debug] GET    /bar                      --> main.main.func2 (3 handlers)
[GIN-debug] GET    /status                   --> main.main.func3 (3 handlers)

If you want to log this information in given format (e.g. JSON, key values or something else), then you can define this format with gin.DebugPrintRouteFunc. In the example below, we log all routes with standard log package but you can use another log tools that suits of your needs.

import (
	"log"
	"net/http"

	"github.com/gin-gonic/gin"
)

func main() {
	r := gin.Default()
	gin.DebugPrintRouteFunc = func(httpMethod, absolutePath, handlerName string, nuHandlers int) {
		log.Printf("endpoint %v %v %v %v\n", httpMethod, absolutePath, handlerName, nuHandlers)
	}

	r.POST("/foo", func(c *gin.Context) {
		c.JSON(http.StatusOK, "foo")
	})

	r.GET("/bar", func(c *gin.Context) {
		c.JSON(http.StatusOK, "bar")
	})

	r.GET("/status", func(c *gin.Context) {
		c.JSON(http.StatusOK, "ok")
	})

	// Listen and Server in http://0.0.0.0:8080
	r.Run()
}

Set and get a cookie

import (
    "fmt"

    "github.com/gin-gonic/gin"
)

func main() {

    router := gin.Default()

    router.GET("/cookie", func(c *gin.Context) {

        cookie, err := c.Cookie("gin_cookie")

        if err != nil {
            cookie = "NotSet"
            c.SetCookie("gin_cookie", "test", 3600, "/", "localhost", false, true)
        }

        fmt.Printf("Cookie value: %s \n", cookie)
    })

    router.Run()
}

Testing

The net/http/httptest package is preferable way for HTTP testing.

package main

func setupRouter() *gin.Engine {
	r := gin.Default()
	r.GET("/ping", func(c *gin.Context) {
		c.String(200, "pong")
	})
	return r
}

func main() {
	r := setupRouter()
	r.Run(":8080")
}

Test for code example above:

package main

import (
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestPingRoute(t *testing.T) {
	router := setupRouter()

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", "/ping", nil)
	router.ServeHTTP(w, req)

	assert.Equal(t, 200, w.Code)
	assert.Equal(t, "pong", w.Body.String())
}

Users

Awesome project lists using Gin web framework.

  • gorush: A push notification server written in Go.
  • fnproject: The container native, cloud agnostic serverless platform.
  • photoprism: Personal photo management powered by Go and Google TensorFlow.
  • krakend: Ultra performant API Gateway with middlewares.
  • picfit: An image resizing server written in Go.
  • brigade: Event-based Scripting for Kubernetes.
  • dkron: Distributed, fault tolerant job scheduling system.
Comments
  • c.ClientIP()

    c.ClientIP()

    Friends, the update to 1.7 broke the work with IP addresses of clients.

    I am proxying Go through Nginx

    location /backend/ {
            rewrite /backend/(.*) /$1 break;
            proxy_set_header X-Forwarded-For $remote_addr;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $http_host;
            proxy_redirect off;
            proxy_pass http://127.0.0.1:8080;
        }
    

    I read this https://github.com/gin-gonic/gin/issues/2693

    But I don't understand what to write in router.TrustedProxies

    func GinRouter() *gin.Engine {
    	router := gin.New()
    
    	// Set a lower memory limit for multipart forms
    	router.MaxMultipartMemory = 100 << 20 // 100 MB
    
    	// Custom Logger
    	router.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string {
    		return fmt.Sprintf("%s |%s %d %s| %s |%s %s %s %s | %s | Body: %s | %s | %s\n",
    			param.TimeStamp.Format(time.RFC1123),
    			param.StatusCodeColor(),
    			param.StatusCode,
    			param.ResetColor(),
    			param.ClientIP,
    			param.MethodColor(),
    			param.Method,
    			param.ResetColor(),
    			param.Path,
    			param.Latency,
    			byteCountSI(param.BodySize),
    			param.Request.UserAgent(),
    			param.ErrorMessage,
    		)
    	}))
    
    	// Recovery middleware recovers from any panics and writes a 500 if there was one.
    	router.Use(gin.Recovery())
    
    	return router
    }
    

    Thanks everyone 🙏🏻

  • To everyone who's new here

    To everyone who's new here

    To everyone who's new here:

    If you use RESTful-Style API, router of gin will be a TROUBLEMAKER!

    #205 #1681 #136 #2005

    The root of the problem is httprouter

  • Inability to use '/' for static files

    Inability to use '/' for static files

    Hi,

    I'm very sad to find out that gin doesn't allow you to have '/' as your top level route for static files. Almost every single web framework out there assumes that the static files you have inside your project are going to be served from $static_dir and they will be mapped as HTTP routes from '/'. An example from express.js does this:

    server.use(express.static(__dirname + '/public'));
    

    Doing that maps "/index.html" to "public/index.html". Expected behavior. Any other frameworks like Rails or Martini have this convention as well. Basically it means that if you have the following files inside a "./public" directory:

    --- public/
     |
     |--- index.html
     |--- css/
     |      |--- app.css
    

    Files will be accessible with HTTP requests like $server_url/index.html or $server_url/css/app.css. Gin disallows you to do this (although the problem lies in httprouter), and forces you to have a separate (non-top-level) route for public/static files like:

    router.Static("/static", "/var/www")
    

    So, if I use this:

    router.Static("/", "/var/www")
    

    I get this panic:

    panic: wildcard route conflicts with existing children
    
    goroutine 16 [running]:
    runtime.panic(0x2d5da0, 0xc2080013a0)
        /usr/local/go/src/pkg/runtime/panic.c:279 +0xf5
    github.com/julienschmidt/httprouter.(*node).insertChild(0xc208004360, 0xc208001302, 0xc208040de1, 0x10, 0xc208040e20)
        /Users/cachafla/Code/Go/go/src/github.com/julienschmidt/httprouter/tree.go:201 +0x11e
    github.com/julienschmidt/httprouter.(*node).addRoute(0xc208004360, 0xc208040de1, 0x10, 0xc208040e20)
        /Users/cachafla/Code/Go/go/src/github.com/julienschmidt/httprouter/tree.go:172 +0x952
    github.com/julienschmidt/httprouter.(*Router).Handle(0xc208040c60, 0x3ce8b0, 0x3, 0xc208040de0, 0x11, 0xc208040e20)
        /Users/cachafla/Code/Go/go/src/github.com/julienschmidt/httprouter/router.go:205 +0x186
    github.com/gin-gonic/gin.(*RouterGroup).Handle(0xc208070340, 0x3ce8b0, 0x3, 0xc208040de0, 0x11, 0xc2080380a0, 0x1, 0x1)
        /Users/cachafla/Code/Go/go/src/github.com/gin-gonic/gin/gin.go:223 +0x477
    github.com/gin-gonic/gin.(*RouterGroup).GET(0xc208070340, 0xc208040d40, 0x11, 0xc2080380a0, 0x1, 0x1)
        /Users/cachafla/Code/Go/go/src/github.com/gin-gonic/gin/gin.go:233 +0x6d
    github.com/gin-gonic/gin.(*RouterGroup).Static(0xc208070340, 0xc208040d40, 0x11, 0x3eed10, 0x8)
        /Users/cachafla/Code/Go/go/src/github.com/gin-gonic/gin/gin.go:276 +0x252
    

    It might seem silly, but this is actually an incorrect behavior for defining a static directory to be served by the HTTP server. The router should be able to handle multiple matching routes, as almost any other HTTP library out there In my case, I really need my index.html to be /index.html and not /static/index.html.

    In any case, I understand that this comes from a predefined httprouter behavior and I acknowledge that I could use a prefix and "deal with it", but I would prefer if this worked as it should. If somebody has any tips on how to workaround this issue I would really appreciate it, thanks!

  • X-Forwarded-For handling is unsafe

    X-Forwarded-For handling is unsafe

    Allow specifying which headers to use for deducing client IP.

    Allow specifying which proxies you trust to provide those headers.

    Set defaults to match current behaviour.

    Fixes #2473 and #2232

  • current panic make cpu skyrocket to 96%+,maybe this is bug.

    current panic make cpu skyrocket to 96%+,maybe this is bug.

    https://github.com/gin-gonic/gin/blob/73c4633943d596bdbeaa7d02cebdd4bd0c4f4630/render/json.go#L58 When the response is written to the writer, after the panic occurs here, the capture of the machine causes the CPU to skyrocket, which is close to 96%. When the 100% is reached, the request is lost, and the http service hangs.

  • Using http.Handler?

    Using http.Handler?

    I'd like to use something like authboss that has its own http.Handler: https://godoc.org/gopkg.in/authboss.v0#Authboss.NewRouter

    With Gorilla Mux you can attach the handler to a routegroup like so:

    mux.PathPrefix("/auth").Handler(ab.NewRouter())
    

    I see httprouter has this functionality as well: http://godoc.org/github.com/julienschmidt/httprouter#Router.Handler

    Can you do something similar with Gin? If I just wrapped it in a context would it handle the routing correctly still? Thanks!

  • Add support for fasthttp or fasthttprouter

    Add support for fasthttp or fasthttprouter

    Fasthttp provides an http server optimized for high performance. It doesn't allocate memory in hot paths - the same approach is used by httprouter.

    With fasthttp gin may become even faster. See also fasthttprouter, httprouter fork based on fasthttp.

  • Using setHTMLTemplate in each handler?

    Using setHTMLTemplate in each handler?

    Hi,

    I'm wondering if using gin.Context.Engine.setHTMLTemplate in each handler is the correct/safe way to set up templates? (nb: templates that are trying to reuse layout elements and thus using define cannot override the define blocks so for each handler one needs to load only the specific templates).

  • New behavior of r.Run binds to localhost, not 0.0.0.0, issues in Docker

    New behavior of r.Run binds to localhost, not 0.0.0.0, issues in Docker

    Description

    Hi! In gin 1.6.0 it appears starting a default gin instance will now bind to:

    localhost:8080

    Instead of previously it would bind to just :8080 (0.0.0.0)

    This causes issues when used inside of Docker as it is binding to Docker's localhost rather than 0.0.0.0

    How to reproduce

    package main
    
    import (
    	"github.com/gin-gonic/gin"
    )
    
    func main() {
    	g := gin.Default()
    	g.GET("/hello/:name", func(c *gin.Context) {
    		c.String(200, "Hello %s", c.Param("name"))
    	})
    	g.Run()
    }
    

    More or less the example above should show gin starting on localhost:8080 rather than :8080 like in gin 1.5.0

    Expectations

    The expectation is by default, gin should bind the way it previously did

    A project that is setup to show this:

    https://github.com/DarthHater/hello-world/tree/TestBranch

    If you clone that repo, and run docker-compose up, you should see the project start on :8080 as it is using gin 1.5.0, if you switch the go.mod to use gin 1.6.0, you'll see localhost:8080, and if you attempt to hit:

    http://locahost:8080/ping

    You'll see empty response, as although Docker has exposed 8080, it's not making it through to the host application since it is bound to Docker's localhost rather than the machines 0.0.0.0

    Let me know if there are any questions! I was teaching some friends how to use gin, etc... and ran into this while doing so.

  • Can we have a new release?

    Can we have a new release?

    I'm using Glide as a dependency manager and I'm using a new feature (ShouldBindUri which I guess it has 30 days merged in Master), can you guys create a new version so we can use those new features?

  • Question: Handling errors

    Question: Handling errors

    I'm in the process of writing a REST API which returns JSON. I've found my route handlers can get quite cluttered with error handling. I've been looking at ways I can reduce and simply error handling and would appreciate anyone's opinions or advice on what I've come up with.

    I'm following the JSON API standard for error returning, http://jsonapi.org/format/#errors, they contain a bit more than the standard Error in Go, so when I initiate an error it can get quite big.

    I have created an APIError struct, some helper functions and some default errors:

    type APIErrors struct {
        Errors      []*APIError `json:"errors"`
    }
    
    func (errors *APIErrors) Status() int {
        return errors.Errors[0].Status
    }
    
    type APIError struct {
        Status      int         `json:"status"`
        Code        string      `json:"code"`
        Title       string      `json:"title"`
        Details     string      `json:"details"`
        Href        string      `json:"href"`
    }
    
    func newAPIError(status int, code string, title string, details string, href string) *APIError {
        return &APIError{
            Status:     status,
            Code:       code,
            Title:      title,
            Details:    details,
            Href:       href,
        }
    }
    
    var (
        errDatabase         = newAPIError(500, "database_error", "Database Error", "An unknown error occurred.", "")
        errInvalidSet       = newAPIError(404, "invalid_set", "Invalid Set", "The set you requested does not exist.", "")
        errInvalidGroup     = newAPIError(404, "invalid_group", "Invalid Group", "The group you requested does not exist.", "")
    )
    

    All of my other funcs in my app return their err but when it get backs to my handler I need to handle how I return it to the client. As far as I'm aware I can't return to middleware so I've added my own Recovery middleware which handles APIError that I panic from my handlers, i.e.

    func Recovery() gin.HandlerFunc {
        return func(c *gin.Context) {
            defer func() {
                if err := recover(); err != nil {
                    switch err.(type) {
                        case *APIError:
                            apiError := err.(*APIError)
                            apiErrors := &APIErrors{
                                Errors: []*APIError{apiError},
                            }
                            c.JSON(apiError.Status, apiErrors)
                        case *APIErrors:
                            apiErrors := err.(*APIErrors)
                            c.JSON(apiErrors.Status(), apiErrors)
                    }
                    panic(err)
                }
            }()
    
            c.Next()
        }
    }
    

    Then in my handler I can do something like this:

        // Grab the set from storage
        set, err := storage.GetSet(set_uuid)
    
        if (err == database.RecordNotFound) {
            panic(errInvalidSet)
        } else {
            panic(errDatabase)
        }
    

    which, in my opinion, keeps things really tidy and reduces repetition. I've seen that people recommend you try to use panic as little as possible, but I'm not sure if it works well in this situation? I wonder what people think of this, whether it's a good way to go about it and, if my method isn't great, whether there's any recommended alternatives?

  • Iterate over PostForm values

    Iterate over PostForm values

    Description

    I would like to iterate over a PostForm, but ran into several issues while attempting this.

    How to reproduce

    <form action="/test" method="POST">
      <input type="radio" name="foo" value="a">
      <input type="radio" name="bar" value="b">
    </form>
    
    router.POST("/test", func test(ctx *gin.Context) {
        for name, value := range ctx.Request.PostForm {
            fmt.Println(name, value)
        }
    })
    

    The code above prints nothing. I found out that this is due to the POST form not being parsed, unless one tries to get a specific value: https://github.com/gin-gonic/gin/blob/7d8fc1563b4e1b4229e61c2fe4c9e31ce13ace7d/context.go#L528-L547

    This fixes it:

    router.POST("/test", func test(ctx *gin.Context) {
        ctx.GetPostForm("") // To trigger parsing
        for name, value := range ctx.Request.PostForm {
            fmt.Println(name, value)
        }
    })
    

    It would be nice if it was possible to trigger the parsing manually, or have some sort of iterator over the values. Perhaps just making initFormCache() public? The worst case is that someone calls it without knowing what it does, but it doesn't really break anything if they do.

  • panic with HandleMethodNotAllowed and route corner case

    panic with HandleMethodNotAllowed and route corner case

    Description

    Setting HandleMethodNotAllowed on the engine and configuring the routes in a intricate way, gin panics when a certain request is sent. See details below on how to reproduce.

    How to reproduce

    package main
    
    import (
    	"github.com/gin-gonic/gin"
    )
    
    func main() {
    	r := gin.Default()
    	r.HandleMethodNotAllowed = true
    
    	r.GET("/base/metrics", handler)
    	r.GET("/base/v1/:id/devices", handler)
    	r.GET("/base/v1/user/:id/groups", handler)
    	r.GET("/base/v1/organizations/:id", handler)
    	r.DELETE("/base/v1/organizations/:id", handler)
    	r.Run() 
    }
    

    Now, make a GET on "localhost:8080/base/v1/user/groups", in which case gin panics.

    I must admit that the above setup is a bit off, with how ".../:id/devices" and ".../user/:id/groups" is overlapping somewhat, but I still do not expect a panic. If the setup of the routes truly is wrong, then I would expect a panic to happen earlier, either at r.GET() or r.Run().

    I've also tried to delete some of the routes to minimize the example, but it seems that all lines are needed for this to fail, which further emphasize that this is a corner case.

    Expectations

    $ curl http://localhost:8080/base/v1/user/groups
    404 page not found
    

    Actual result

    $ curl -i http://localhost:8080/base/v1/user/groups
    curl: (52) Empty reply from server
    

    With the following log message from the gin app:

    2023/01/03 10:16:50 http: panic serving 127.0.0.1:56181: runtime error: index out of range [0] with length 0
    goroutine 34 [running]:
    net/http.(*conn).serve.func1()
            /usr/local/go/src/net/http/server.go:1850 +0xb0
    panic({0x1053aefe0, 0x140000260f0})
            /usr/local/go/src/runtime/panic.go:890 +0x258
    github.com/gin-gonic/gin.(*node).getValue(0x1400012d938?, {0x14000520244?, 0x1400012d9d8?}, 0x0, 0x1400000e030, 0x0)
            /Users/kristiansvalland/go/pkg/mod/github.com/gin-gonic/[email protected]/tree.go:637 +0x378
    github.com/gin-gonic/gin.(*Engine).handleHTTPRequest(0x1400054c4e0, 0x140000ae000)
            /Users/kristiansvalland/go/pkg/mod/github.com/gin-gonic/[email protected]/gin.go:637 +0x474
    github.com/gin-gonic/gin.(*Engine).ServeHTTP(0x1400054c4e0, {0x1053d9df8?, 0x140000a8000}, 0x14000512100)
            /Users/kristiansvalland/go/pkg/mod/github.com/gin-gonic/[email protected]/gin.go:572 +0x1d4
    net/http.serverHandler.ServeHTTP({0x14000502e70?}, {0x1053d9df8, 0x140000a8000}, 0x14000512100)
            /usr/local/go/src/net/http/server.go:2947 +0x2c4
    net/http.(*conn).serve(0x1400051ab40, {0x1053da5e0, 0x14000502d80})
            /usr/local/go/src/net/http/server.go:1991 +0x560
    created by net/http.(*Server).Serve
            /usr/local/go/src/net/http/server.go:3102 +0x444
    

    Environment

    • go version: go1.19.4
    • gin version (or commit ref): v1.8.2 and master
    • operating system: MacOS

    Suggested fix

    As hinted by in the backtrace, the panic occurs in tree.go#L637, specifically here (with commentary and suggested fix commented):

    if !value.tsr && path != "/" {
    	for l := len(*skippedNodes); l > 0; {
    		skippedNode := (*skippedNodes)[l-1] // <-- Panic occurs here in the second round of the for loop
    		*skippedNodes = (*skippedNodes)[:l-1]
    		l-- // suggested fix
    		if strings.HasSuffix(skippedNode.path, path) {
    			path = skippedNode.path
    			n = skippedNode.node
    			if value.params != nil {
    				*value.params = (*value.params)[:skippedNode.paramsCount]
    			}
    			globalParamsCount = skippedNode.paramsCount
    			continue walk
    		}
    	}
    }
    

    Note: The above logic happens three places in tree.go, so they should probably also be fixed at the same time.

    Capacity for working on this

    I have already created a test and fix for this issue, which I will create a PR for promptly.

  • Other Serialization formats - Amazon ION

    Other Serialization formats - Amazon ION

    Hi,

    Thanks for creating gin, it's awesome!

    I'm building RESTFUL API but I'd like use serialization format other than available here. I chose Amazon ION. There is an official go library And even curl-like toll supporting it, see here how it sets application/ion header.

    Is it possible?

  • When access to request body in proxy.ModifyResponse it is blank byte array

    When access to request body in proxy.ModifyResponse it is blank byte array

    Description

    Hi guys, i'm try to make reverse proxy server with gin. Everything work as i expect except when i try to response.Request.Body, it read blank byte array.

    How to reproduce

    package main
    
    import (
    	"io/ioutil"
    	"net/http"
    	"net/http/httputil"
    	"net/url"
    
    	"github.com/gin-gonic/gin"
    )
    
    func proxy(c *gin.Context) {
    
    	remote, err := url.Parse("https://google.com")
    	if err != nil {
    		panic(err)
    	}
    
    	proxy := httputil.NewSingleHostReverseProxy(remote)
    	proxy.ModifyResponse = func(resp *http.Response) error {
    		if resp.Request.Body != nil {
    			req := *resp.Request
    			b, err := ioutil.ReadAll(req.Body)
    			if err != nil {
    				c.AbortWithError(http.StatusInternalServerError, err)
    			}
    
    			println(string(b)) // this is blank what i expect is request body
    		}
    
    		return nil
    	}
    
    	proxy.ServeHTTP(c.Writer, c.Request)
    }
    
    func main() {
    	r := gin.Default()
    
    	r.Any("/graphql", proxy)
    	r.Run()
    }
    
    

    Expectations

    $ curl -d '{"key1":"value1", "key2":"value2"}' -H "Content-Type: application/json" -X POST http://localhost:3000/graphql
    {"key1":"value1", "key2":"value2"}
    

    Actual result

    $ curl -d '{"key1":"value1", "key2":"value2"}' -H "Content-Type: application/json" -X POST http://localhost:3000/graphql
    blank result
    

    Environment

    • go version: 1.19
    • gin version (or commit ref):1.8.1
    • operating system:macos
  • json: cannot unmarshal array into Go value of type

    json: cannot unmarshal array into Go value of type

    Description

    Hi, i was trying to bind some json array with form-data but it throws can't unmarshal JSON Array so when i cover it by json object and then it works as i expect

    How to reproduce

    package main
    
    import (
    	"github.com/gin-gonic/gin"
    )
    
    type CreateParams struct {
            Person []Person `form:"person" binding:"dive"`
    }
    
    type Person struct {
    	Firstname string `json:"firstname" binding:"required"`
    	Lastname  string `json:"lastname"`
    }
    
    func main() {
    	g := gin.Default()
    	g.GET("/foo", func(c *gin.Context) {
                var createParams CreateParams
                
                c.ShouldBind(&createParams)
    
                c.JSON(http.StatusOK, gin.H{"request" : createParams})
    	})
    	g.Run(":9000")
    }
    

    Expectations

    $ curl 0:4000 -X POST -d 'person=[{"firstname" : "spider", "lastname" : "man"},{"firstname" : "spider", "lastname" : "lady"}]'
    {
        "request": [
            {
                "firstname": "spider",
                "lastname": "man"
            },
            {   
                "firstname": "spider",
                "lastname": "lady"
        ]
    }
    

    Actual result

    $ curl 0:4000 -X POST -d 'person=[{"firstname" : "spider", "lastname" : "man"},{"firstname" : "spider", "lastname" : "lady"}]'
    json: cannot unmarshal array into Go value of type Person
    

    Environment

    • go version:1.19.3
    • gin version (or commit ref):1.8.1
    • operating system:macos
Swagger + Gin = SwaGin, a web framework based on Gin and Swagger
Swagger + Gin = SwaGin, a web framework based on Gin and Swagger

Swagger + Gin = SwaGin Introduction SwaGin is a web framework based on Gin and Swagger, which wraps Gin and provides built-in swagger api docs and req

Dec 30, 2022
Swagger + Gin = SwaGin, a web framework based on Gin and Swagger
Swagger + Gin = SwaGin, a web framework based on Gin and Swagger

Swagger + Gin = SwaGin Introduction SwaGin is a web framework based on Gin and Swagger, which wraps Gin and provides built-in swagger api docs and req

Dec 30, 2022
⚡ Rux is an simple and fast web framework. support middleware, compatible http.Handler interface. 简单且快速的 Go web 框架,支持中间件,兼容 http.Handler 接口

Rux Simple and fast web framework for build golang HTTP applications. NOTICE: v1.3.x is not fully compatible with v1.2.x version Fast route match, sup

Dec 8, 2022
Rocinante is a gin inspired web framework built on top of net/http.

Rocinante Rocinante is a gin inspired web framework built on top of net/http. ⚙️ Installation $ go get -u github.com/fskanokano/rocinante-go ⚡️ Quicks

Jul 27, 2021
A gin-like simple golang web framework.

webgo A gin-like simple golang web framework.

Aug 24, 2022
A gin-like simple golang web framework.

A gin-like simple golang web framework.

Aug 24, 2022
Percobaan membuat API dengan Golang menggunakan web framework Gin dan Swagger docs.
Percobaan membuat API dengan Golang menggunakan web framework Gin dan Swagger docs.

Percobaan Gin Framework Percobaan membuat API dengan bahasa Go-lang. Tech Stack Gin - Web framework Gin Swaggo - Swagger Docs integration for Gin web

Feb 11, 2022
Flamingo Framework and Core Library. Flamingo is a go based framework for pluggable web projects. It is used to build scalable and maintainable (web)applications.
Flamingo Framework and Core Library. Flamingo is a go based framework for pluggable web projects. It is used to build scalable and maintainable (web)applications.

Flamingo Framework Flamingo is a web framework based on Go. It is designed to build pluggable and maintainable web projects. It is production ready, f

Jan 5, 2023
Golanger Web Framework is a lightweight framework for writing web applications in Go.

/* Copyright 2013 Golanger.com. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except

Nov 14, 2022
Tigo is an HTTP web framework written in Go (Golang).It features a Tornado-like API with better performance. Tigo是一款用Go语言开发的web应用框架,API特性类似于Tornado并且拥有比Tornado更好的性能。
Tigo is an HTTP web framework written in Go (Golang).It features a Tornado-like API with better performance.  Tigo是一款用Go语言开发的web应用框架,API特性类似于Tornado并且拥有比Tornado更好的性能。

Tigo(For English Documentation Click Here) 一个使用Go语言开发的web框架。 相关工具及插件 tiger tiger是一个专门为Tigo框架量身定做的脚手架工具,可以使用tiger新建Tigo项目或者执行其他操作。

Jan 5, 2023
A minimal framework to build web apps; with handler chaining, middleware support; and most of all standard library compliant HTTP handlers(i.e. http.HandlerFunc).
A minimal framework to build web apps; with handler chaining, middleware support; and most of all standard library compliant HTTP handlers(i.e. http.HandlerFunc).

WebGo v4.1.3 WebGo is a minimalistic framework for Go to build web applications (server side) with zero 3rd party dependencies. Unlike full-fledged fr

Jan 1, 2023
Timeout handler for http request in Gin framework

Middleware to Handle Request Timeout in Gin Installation Installation go get github.com/s-wijaya/gin-timeout Import it in your code: import ( // o

Dec 14, 2021
gin auto binding,grpc, and annotated route,gin 注解路由, grpc,自动参数绑定工具
gin auto binding,grpc, and annotated route,gin 注解路由, grpc,自动参数绑定工具

中文文档 Automatic parameter binding base on go-gin doc Golang gin automatic parameter binding Support for RPC automatic mapping Support object registrati

Jan 3, 2023
Example Golang API backend rest implementation mini project Point Of Sale using Gin Framework and Gorm ORM Database.

Example Golang API backend rest implementation mini project Point Of Sale using Gin Framework and Gorm ORM Database.

Dec 23, 2022
BANjO is a simple web framework written in Go (golang)

BANjO banjo it's a simple web framework for building simple web applications Install $ go get github.com/nsheremet/banjo Example Usage Simple Web App

Sep 27, 2022
Umeshu is a mini web framework written by Golang.

Umeshu Umeshu is a mini web framework written by Golang. Purpose Why do I reinvent the wheel? Just for learning. ?? Building a mini web framework from

Jul 2, 2022
burn is a web framework written in golang to develop backend / restapi

burn burn rest api framework About: burn is a web framework written in golang to

Dec 27, 2021
Roche is a Code Generator and Web Framework, makes web development super concise with Go, CleanArch
Roche is a Code Generator and Web Framework, makes web development super concise with Go, CleanArch

It is still under development, so please do not use it. We plan to release v.1.0.0 in the summer. roche is a web framework optimized for microservice

Sep 19, 2022