add chinese docs (#1588)

README_ZH.md

@@ -0,0 +1,1940 @@
+# Gin Web 框架中文文档
+
+<img align="right" width="159px" src="https://raw.githubusercontent.com/gin-gonic/logo/master/color.png">
+
+[![Build Status](https://travis-ci.org/gin-gonic/gin.svg)](https://travis-ci.org/gin-gonic/gin)
+[![codecov](https://codecov.io/gh/gin-gonic/gin/branch/master/graph/badge.svg)](https://codecov.io/gh/gin-gonic/gin)
+[![Go Report Card](https://goreportcard.com/badge/github.com/gin-gonic/gin)](https://goreportcard.com/report/github.com/gin-gonic/gin)
+[![GoDoc](https://godoc.org/github.com/gin-gonic/gin?status.svg)](https://godoc.org/github.com/gin-gonic/gin)
+[![Join the chat at https://gitter.im/gin-gonic/gin](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/gin-gonic/gin?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Sourcegraph](https://sourcegraph.com/github.com/gin-gonic/gin/-/badge.svg)](https://sourcegraph.com/github.com/gin-gonic/gin?badge)
+[![Open Source Helpers](https://www.codetriage.com/gin-gonic/gin/badges/users.svg)](https://www.codetriage.com/gin-gonic/gin)
+[![Release](https://img.shields.io/github/release/gin-gonic/gin.svg?style=flat-square)](https://github.com/gin-gonic/gin/releases)
+
+Gin 是一个 Go (Golang) 语言框架。 它是一个拥有更好性能的 martini-like API 框架, 比 [httprouter](https://github.com/julienschmidt/httprouter) 的速度快了40倍. 如果你是性能和高效的追求者, 那么你会爱上 Gin.
+
+![Gin console logger](https://gin-gonic.github.io/gin/other/console.png)
+
+## Contents
+
+- [安装](#安装)
+- [前提条件](#前提条件)
+- [快速启动](#快速启动)
+- [性能测试](#性能测试)
+- [Gin v1 稳定版](#gin-v1-稳定版)
+- [使用 jsoniter 构建](#使用-jsoniter-构建)
+- [API 示例](#api-示例)
+    - [GET,POST,PUT,PATCH,DELETE,OPTIONS 使用](#get-post-put-patch-delete-options-使用)
+    - [路由参数](#路由参数)
+    - [查询字符串参数](#查询字符串参数)
+    - [Multipart Urlencoded 表单](#multipart-urlencoded-表单)
+    - [另一个实列 query + post form](#另一个实列:-query-+-post-form)
+    - [映射参数 表单参数](#映射参数-表单参数)
+    - [上传文件](#上传文件)
+    - [路由组](#路由组)
+    - [默认初始化 Gin](#默认初始化-gin)
+    - [中间件使用](#中间件使用)
+    - [如何记录日志](#如何记录日志)
+    - [模型绑定和验证](#模型绑定和验证)
+    - [自定义验证器](#自定义验证器)
+    - [只绑定查询字符串](#只绑定查询字符串)
+    - [绑定查询字符串或发布数据](#绑定查询字符串或发布数据)
+    - [绑定 HTML 复选框](#绑定-html-复选框)
+    - [Multipart Urlencoded 绑定](#multipart-urlencoded-绑定)
+    - [XML JSON YAML ProtoBuf 渲染](#xml-json-yaml-protobuf-渲染)
+    - [SecureJSON](#SecureJSON)
+    - [静态文件服务](#静态文件服务)
+    - [从读者服务数据](#从读者服务数据)
+    - [HTML 渲染](#html-渲染)
+    - [多模板](#多模板)
+    - [重定向](#重定向)
+    - [自定义中间件](#自定义中间件)
+    - [使用 BasicAuth() 中间件](#使用-basicauth()-中间件)
+    - [Goroutines](#goroutines)
+    - [自定义 HTTP 配置](#自定义-http-配置)
+    - [Let's Encrypt 支持](#lets-encrypt-支持)
+    - [使用 Gin 运行多个服务](使用-gin-运行多个服务)
+    - [优雅重启或停止](#优雅重启或停止)
+    - [使用模板构建单个二进制文件](#使用模板构建单个二进制文件)
+    - [使用自定义结构绑定表单数据请求](#使用自定义结构绑定表单数据请求)
+    - [尝试将body绑定到不同的结构中](#尝试将-body-绑定到不同的结构中)
+    - [http2 server 推送](#http2-server-推送)
+    - [定义路由日志的格式](#定义路由日志的格式)
+- [测试](#测试)
+- [用户](#用户)
+
+## 安装
+
+要安装 Gin 软件包，需要先安装 Go 并设置 Go 工作区。
+
+1. 下载并安装 gin:
+
+```sh
+$ go get -u github.com/gin-gonic/gin
+```
+
+2. 将 gin 引入到代码中:
+
+```go
+import "github.com/gin-gonic/gin"
+```
+
+3. （可选）如果使用诸如`http.StatusOK`之类的常量，则需要引入 `net / http` 包。
+
+```go
+import "net/http"
+```
+
+### 使用 [Govendor](https://github.com/kardianos/govendor) 工具创建项目
+
+1. `go get` govendor
+
+```sh
+$ go get github.com/kardianos/govendor
+```
+2.创建项目并且 `cd` 到项目目录中
+
+```sh
+$ mkdir -p $GOPATH/src/github.com/myusername/project && cd "$_"
+```
+
+3. 使用 govendor 初始化项目,并且引入gin
+
+```sh
+$ govendor init
+$ govendor fetch github.com/gin-gonic/gin@v1.3
+```
+
+4. 复制一个启动文件模板到项目目录中
+
+```sh
+$ curl https://raw.githubusercontent.com/gin-gonic/gin/master/examples/basic/main.go > main.go
+```
+
+5.启动项目
+
+```sh
+$ go run main.go
+```
+
+## 前提条件
+
+新版本的 Gin 需要 Go 1.6 或者更高版本并且很快就会升级到 Go 1.7.
+
+## 快速启动
+ 
+```sh
+# assume the following codes in example.go file
+$ cat example.go
+```
+
+```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
+}
+```
+
+```
+# run example.go and visit 0.0.0.0:8080/ping on browser
+$ go run example.go
+```
+
+## 性能测试
+
+Gin 使用自定义版本的 [HttpRouter](https://github.com/julienschmidt/httprouter)
+
+[所有性能测试](/BENCHMARKS.md)
+
+Benchmark name                              | (1)        | (2)         | (3) 		    | (4)
+--------------------------------------------|-----------:|------------:|-----------:|---------:
+**BenchmarkGin_GithubAll**                  | **30000**  |  **48375**  |     **0**  |   **0**
+BenchmarkAce_GithubAll                      |   10000    |   134059    |   13792    |   167
+BenchmarkBear_GithubAll                     |    5000    |   534445    |   86448    |   943
+BenchmarkBeego_GithubAll                    |    3000    |   592444    |   74705    |   812
+BenchmarkBone_GithubAll                     |     200    |  6957308    |  698784    |  8453
+BenchmarkDenco_GithubAll                    |   10000    |   158819    |   20224    |   167
+BenchmarkEcho_GithubAll                     |   10000    |   154700    |    6496    |   203
+BenchmarkGocraftWeb_GithubAll               |    3000    |   570806    |  131656    |  1686
+BenchmarkGoji_GithubAll                     |    2000    |   818034    |   56112    |   334
+BenchmarkGojiv2_GithubAll                   |    2000    |  1213973    |  274768    |  3712
+BenchmarkGoJsonRest_GithubAll               |    2000    |   785796    |  134371    |  2737
+BenchmarkGoRestful_GithubAll                |     300    |  5238188    |  689672    |  4519
+BenchmarkGorillaMux_GithubAll               |     100    | 10257726    |  211840    |  2272
+BenchmarkHttpRouter_GithubAll               |   20000    |   105414    |   13792    |   167
+BenchmarkHttpTreeMux_GithubAll              |   10000    |   319934    |   65856    |   671
+BenchmarkKocha_GithubAll                    |   10000    |   209442    |   23304    |   843
+BenchmarkLARS_GithubAll                     |   20000    |    62565    |       0    |     0
+BenchmarkMacaron_GithubAll                  |    2000    |  1161270    |  204194    |  2000
+BenchmarkMartini_GithubAll                  |     200    |  9991713    |  226549    |  2325
+BenchmarkPat_GithubAll                      |     200    |  5590793    | 1499568    | 27435
+BenchmarkPossum_GithubAll                   |   10000    |   319768    |   84448    |   609
+BenchmarkR2router_GithubAll                 |   10000    |   305134    |   77328    |   979
+BenchmarkRivet_GithubAll                    |   10000    |   132134    |   16272    |   167
+BenchmarkTango_GithubAll                    |    3000    |   552754    |   63826    |  1618
+BenchmarkTigerTonic_GithubAll               |    1000    |  1439483    |  239104    |  5374
+BenchmarkTraffic_GithubAll                  |     100    | 11383067    | 2659329    | 21848
+BenchmarkVulcan_GithubAll                   |    5000    |   394253    |   19894    |   609
+
+- (1): 在不断的时间内实现总重复，更高意味着更自信的结果
+- (2): 单次重复持续时间（ns / op），越低越好
+- (3): 堆内存（B / op），越低越好
+- (4): 每次重复的平均分配（allocs / op）越低越好
+
+## Gin v1 稳定版
+
+- [x] 零分配路由器。
+- [x] 仍然是最快的http路由器和框架。
+- [x] 完整的单元测试套件
+- [x] 对战测试
+- [x] API冻结，新版本不会破坏您的代码。
+
+## 使用 [jsoniter](https://github.com/json-iterator/go) 构建
+
+Gin使用`encoding / json`作为默认的json包，但您可以通过其他标签的构建更改为[jsoniter]（https://github.com/json-iterator/go）。
+
+```sh
+$ go build -tags=jsoniter .
+```
+
+## API 示例
+
+### GET, POST, PUT, PATCH, DELETE , OPTIONS 使用
+
+```go
+func main() {
+	// Disable Console Color
+	// gin.DisableConsoleColor()
+
+	// 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
+}
+```
+
+### 路由参数
+
+```go
+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)
+	})
+
+	router.Run(":8080")
+}
+```
+
+### 查询字符串参数
+
+```go
+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 表单
+
+```go
+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")
+}
+```
+
+### 另一个实列 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
+```
+
+```go
+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
+```
+
+### 映射参数 表单参数
+
+```
+POST /post?ids[a]=1234&ids[b]=hello HTTP/1.1
+Content-Type: application/x-www-form-urlencoded
+
+names[first]=thinkerou&names[second]=tianou
+```
+
+```go
+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]
+```
+
+### 上传文件
+
+#### 单个文件上传
+
+参考问题[＃774]（https://github.com/gin-gonic/gin/issues/774）和详细[示例代码]（examples / upload-file / single）。
+
+```go
+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")
+}
+```
+
+如何 `curl`:
+
+```bash
+curl -X POST http://localhost:8080/upload \
+  -F "file=@/Users/appleboy/test.zip" \
+  -H "Content-Type: multipart/form-data"
+```
+
+#### 多文件上传
+
+查看详细信息[示例代码]（examples / upload-file / multiple）。
+
+```go
+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")
+}
+```
+
+如何 `curl`:
+
+```bash
+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"
+```
+
+### 路由组
+
+```go
+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")
+}
+```
+
+### 默认初始化 Gin
+
+用
+
+```go
+r := gin.New()
+```
+
+代替
+
+```go
+// Default With the Logger and Recovery middleware already attached
+r := gin.Default()
+```
+
+
+### 中间件使用
+```go
+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")
+}
+```
+
+### 如何记录日志
+```go
+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")
+}
+```
+
+### 模型绑定和验证
+
+要将请求主体绑定到类型中，请使用模型绑定。我们目前支持JSON，XML和标准表单值的绑定（foo = bar＆boo = baz）。
+
+Gin使用[** go-playground / validator.v8 **]（https://github.com/go-playground/validator）进行验证。检查有关标签用法的完整文档[此处]（http://godoc.org/gopkg.in/go-playground/validator.v8#hdr-Baked_In_Validators_and_Tags）。
+
+请注意，您需要在要绑定的所有字段上设置相应的绑定标记。例如，从JSON绑定时，设置`json：“fieldname”`。
+
+此外，Gin提供了两组绑定方法：
+- **类型** - 必须绑定
+   - **方法** - `Bind`，`BindJSON`，`BindXML`，`BindQuery`
+   - **行为** - 这些方法在引擎盖下使用`MustBindWith`。如果存在绑定错误，则使用`c.AbortWithError（400，err）.SetType（ErrorTypeBind）`中止请求。这将响应状态代码设置为400，并将`Content-Type`标头设置为`text / plain;字符集= UTF-8`。请注意，如果您在此之后尝试设置响应代码，则会发出警告“[GIN-debug] [警告]标题已经写入。想用422`覆盖状态代码400。如果您希望更好地控制行为，请考虑使用`ShouldBind`等效方法。
+- **类型** - 应该绑定
+   - **方法** - `ShouldBind`，`ShouldBindJSON`，`ShouldBindXML`，`ShouldBindQuery`
+   - **行为** - 这些方法在引擎盖下使用`ShouldBindWith`。如果存在绑定错误，则返回错误，开发人员有责任正确处理请求和错误。
+
+使用Bind方法时，Gin会尝试根据Content-Type标头推断出绑定器。如果你确定你绑定了什么，你可以使用 `MustBindWith` 或 `ShouldBindWith`。
+
+您还可以指定需要特定字段。如果字段用 `binding：“必需”` 来装饰，并且在绑定时具有空值，则会返回错误。
+
+```go
+// 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 (
+	//	<?xml version="1.0" encoding="UTF-8"?>
+	//	<root>
+	//		<user>user</user>
+	//		<password>123</user>
+	//	</root>)
+	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")
+}
+```
+
+**简单请求**
+```shell
+$ 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"}
+```
+
+**跳过验证**
+
+使用上面 的`curl` 命令运行上面的例子时，它返回错误。 因为这个例子使用 `binding：'需要``````。 如果使用 `binding：“ - ``````，那么在再次运行上面的例子时它不会返回错误。
+
+### 自定义验证器
+
+也可以注册自定义验证器。 请参阅[示例代码]（examples / custom-validation / server.go）。
+
+[embedmd]：＃（examples / custom-validation / server.go go）
+```go
+package main
+
+import (
+	"net/http"
+	"reflect"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/gin-gonic/gin/binding"
+	"gopkg.in/go-playground/validator.v8"
+)
+
+// 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"`
+}
+
+func bookableDate(
+	v *validator.Validate, topStruct reflect.Value, currentStructOrField reflect.Value,
+	field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string,
+) bool {
+	if date, ok := field.Interface().(time.Time); ok {
+		today := time.Now()
+		if today.Year() > date.Year() || today.YearDay() > date.YearDay() {
+			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()})
+	}
+}
+```
+
+```console
+$ curl "localhost:8085/bookable?check_in=2018-04-16&check_out=2018-04-17"
+{"message":"Booking dates are valid!"}
+
+$ curl "localhost:8085/bookable?check_in=2018-03-08&check_out=2018-03-09"
+{"error":"Key: 'Booking.CheckIn' Error:Field validation for 'CheckIn' failed on the 'bookabledate' tag"}
+```
+
+[结构级验证]（https://github.com/go-playground/validator/releases/tag/v8.7）也可以这种方式注册。
+请参阅[struct-lvl-validation示例]（examples / struct-lvl-validations）以了解更多信息。
+
+### 只绑定查询字符串
+
+`ShouldBindQuery` 函数只绑定查询参数而不是后期数据。 请参阅[详细信息]（https://github.com/gin-gonic/gin/issues/742#issuecomment-315953017）。
+
+```go
+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")
+}
+
+```
+
+### 绑定查询字符串或发布数据
+
+请参阅[详细信息]（https://github.com/gin-gonic/gin/issues/742#issuecomment-264681292）。
+
+```go
+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"`
+}
+
+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)
+	}
+
+	c.String(200, "Success")
+}
+```
+
+测试:
+```sh
+$ curl -X GET "localhost:8085/testing?name=appleboy&address=xyz&birthday=1992-03-15"
+```
+
+### 绑定 HTML 复选框
+
+参见[详细信息]（https://github.com/gin-gonic/gin/issues/129#issuecomment-124260092）
+
+main.go
+
+```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
+
+```html
+<form action="/" method="POST">
+    <p>Check some colors</p>
+    <label for="red">Red</label>
+    <input type="checkbox" name="colors[]" value="red" id="red" />
+    <label for="green">Green</label>
+    <input type="checkbox" name="colors[]" value="green" id="green" />
+    <label for="blue">Blue</label>
+    <input type="checkbox" name="colors[]" value="blue" id="blue" />
+    <input type="submit" />
+</form>
+```
+
+result:
+
+```
+{"color":["red","green","blue"]}
+```
+
+### Multipart Urlencoded 绑定
+
+```go
+package main
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+type LoginForm struct {
+	User     string `form:"user" binding:"required"`
+	Password string `form:"password" binding:"required"`
+}
+
+func main() {
+	router := gin.Default()
+	router.POST("/login", 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 LoginForm
+		// in this case proper binding will be automatically selected
+		if c.ShouldBind(&form) == nil {
+			if form.User == "user" && form.Password == "password" {
+				c.JSON(200, gin.H{"status": "you are logged in"})
+			} else {
+				c.JSON(401, gin.H{"status": "unauthorized"})
+			}
+		}
+	})
+	router.Run(":8080")
+}
+```
+
+Test it with:
+```sh
+$ curl -v --form user=user --form password=password http://localhost:8080/login
+```
+
+### XML JSON YAML ProtoBuf 渲染
+
+```go
+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
+
+使用 SecureJSON 来防止 json 劫持。 如果给定的结构是数组值，则默认预 置`“while（1），”` 到响应体。
+
+```go
+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
+
+使用 JSONP 从不同域中的服务器请求数据。 如果查询参数回调存在，则将回调添加到响应正文。
+
+```go
+func main() {
+	r := gin.Default()
+
+	r.GET("/JSONP?callback=x", func(c *gin.Context) {
+		data := map[string]interface{}{
+			"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")
+}
+```
+
+#### AsciiJSON
+
+使用 Ascii JSON 生成具有转义的非 ASCII 字符的仅 ASCII JSON。
+
+```go
+func main() {
+	r := gin.Default()
+
+	r.GET("/someJSON", func(c *gin.Context) {
+		data := map[string]interface{}{
+			"lang": "GO语言",
+			"tag":  "<br>",
+		}
+
+		// 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
+
+通常，JSON 用其 unicod e实体替换特殊 HTML 字符，例如 `<` 变为 `\ u003c`。 如果要按字面意思对这些字符进行编码，则可以使用 PureJSON。
+Go 1.6 及更低版本无法使用此功能。
+
+```go
+func main() {
+	r := gin.Default()
+	
+	// Serves unicode entities
+	r.GET("/json", func(c *gin.Context) {
+		c.JSON(200, gin.H{
+			"html": "<b>Hello, world!</b>",
+		})
+	})
+	
+	// Serves literal characters
+	r.GET("/purejson", func(c *gin.Context) {
+		c.PureJSON(200, gin.H{
+			"html": "<b>Hello, world!</b>",
+		})
+	})
+	
+	// listen and serve on 0.0.0.0:8080
+	r.Run(":8080)
+}
+```
+
+### 静态文件服务
+
+```go
+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")
+}
+```
+
+### 从 reader 读取数据
+
+```go
+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
+		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 渲染
+
+使用LoadHTMLGlob（）或LoadHTMLFiles（）
+
+```go
+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
+<html>
+	<h1>
+		{{ .title }}
+	</h1>
+</html>
+```
+
+在不同目录中使用具有相同名称的模板
+
+```go
+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
+
+```html
+{{ define "posts/index.tmpl" }}
+<html><h1>
+	{{ .title }}
+</h1>
+<p>Using posts/index.tmpl</p>
+</html>
+{{ end }}
+```
+
+templates/users/index.tmpl
+
+```html
+{{ define "users/index.tmpl" }}
+<html><h1>
+	{{ .title }}
+</h1>
+<p>Using users/index.tmpl</p>
+</html>
+{{ end }}
+```
+
+#### 自定义模板渲染器
+
+您还可以使用自己的 html 模板渲染
+
+```go
+import "html/template"
+
+func main() {
+	router := gin.Default()
+	html := template.Must(template.ParseFiles("file1", "file2"))
+	router.SetHTMLTemplate(html)
+	router.Run(":8080")
+}
+```
+
+#### 自定义分隔符
+
+您可以使用自定义分隔
+
+```go
+	r := gin.Default()
+	r.Delims("{[{", "}]}")
+	r.LoadHTMLGlob("/path/to/templates"))
+```
+
+#### 自定义模板功能
+
+查看详细信息[示例代码]（示例/模板）。
+
+main.go
+
+```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", map[string]interface{}{
+            "now": time.Date(2017, 07, 01, 0, 0, 0, 0, time.UTC),
+        })
+    })
+
+    router.Run(":8080")
+}
+
+```
+
+raw.tmpl
+
+```html
+日期: {[{.now | formatAsDate}]}
+```
+
+结果:
+```
+Date: 2017/07/01
+```
+
+### 多模板
+
+Gin 允许默认只使用一个 html 模板。 检查[多模板渲染]（https://github.com/gin-contrib/multitemplate）以使用 go 1.6 `block template` 等功能。
+
+### 重定向
+
+Issuing a HTTP redirect is easy. Both internal and external locations are supported.
+
+```go
+r.GET("/test", func(c *gin.Context) {
+	c.Redirect(http.StatusMovedPermanently, "http://www.google.com/")
+})
+```
+
+
+发出路由器重定向，使用如下的“HandleContext”。
+
+``` go
+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"})
+})
+```
+
+
+###  自定义中间件
+
+```go
+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")
+}
+```
+
+### BasicAuth() 中间件
+
+```go
+// simulate some private data
+var secrets = gin.H{
+	"foo":    gin.H{"email": "foo@bar.com", "phone": "123433"},
+	"austin": gin.H{"email": "austin@example.com", "phone": "666"},
+	"lena":   gin.H{"email": "lena@guapa.com", "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
+
+当在中间件或处理程序中启动新的 Goroutines 时，你不应该**使用其中的原始上下文，你必须使用只读副本。
+
+```go
+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")
+}
+```
+
+### 自定义 HTTP 配置
+
+直接使用`http.ListenAndServe（）`，如下所示：
+
+```go
+func main() {
+	router := gin.Default()
+	http.ListenAndServe(":8080", router)
+}
+```
+or
+
+```go
+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()
+}
+```
+
+###  Let's Encrypt 支持
+
+单行 LetsEncrypt HTTPS 服务器的示例。
+
+[embedmd]:# (examples/auto-tls/example1/main.go go)
+```go
+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"))
+}
+```
+
+自定义autocert管理器的示例。
+
+[embedmd]:# (examples/auto-tls/example2/main.go go)
+```go
+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))
+}
+```
+
+### 使用 Gin 运行多个服务
+
+请参阅[问题]（https://github.com/gin-gonic/gin/issues/346）并尝试以下示例：
+
+[embedmd]:# (examples/multiple-service/main.go go)
+```go
+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 {
+		return server01.ListenAndServe()
+	})
+
+	g.Go(func() error {
+		return server02.ListenAndServe()
+	})
+
+	if err := g.Wait(); err != nil {
+		log.Fatal(err)
+	}
+}
+```
+
+### 优雅重启或停止
+
+您想要优雅地重启或停止您的Web服务器吗？
+有一些方法可以做到这一点。
+
+我们可以使用[fvbock / endless]（https://github.com/fvbock/endless）来替换默认的`ListenAndServe`。 有关更多详细信息，请参阅问题[＃296]（https://github.com/gin-gonic/gin/issues/296）。
+
+```go
+router := gin.Default()
+router.GET("/", handler)
+// [...]
+endless.ListenAndServe(":4242", router)
+```
+
+另一种替代方案：
+
+* [manners]（https://github.com/braintree/manners）：礼貌的Go HTTP服务器，可以正常关闭。
+* [graceful]（https://github.com/tylerb/graceful）：Graceful是一个Go包，可以正常关闭http.Handler服务器。
+* [grace]（https://github.com/facebookgo/grace）：Go服务器的平滑重启和零停机时间部署。
+
+如果您使用的是Go 1.8，则可能不需要使用此库！ 考虑使用http.Server的内置[Shutdown（）]（https://golang.org/pkg/net/http/#Server.Shutdown）方法进行正常关机。 请参阅gin的完整[graceful-shutdown]（./ examples / graceful-shutdown）示例。
+
+[embedmd]:# (examples/graceful-shutdown/graceful-shutdown/server.go go)
+```go
+// +build go1.8
+
+package main
+
+import (
+	"context"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"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,
+	}
+
+	go func() {
+		// service connections
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("listen: %s\n", err)
+		}
+	}()
+
+	// Wait for interrupt signal to gracefully shutdown the server with
+	// a timeout of 5 seconds.
+	quit := make(chan os.Signal)
+	signal.Notify(quit, os.Interrupt)
+	<-quit
+	log.Println("Shutdown Server ...")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := srv.Shutdown(ctx); err != nil {
+		log.Fatal("Server Shutdown:", err)
+	}
+	log.Println("Server exiting")
+}
+```
+
+### 使用模板构建单个二进制文件
+
+您可以使用[go-assets] []将服务器构建到包含模板的单个二进制文件中。
+
+[go-assets]：https：//github.com/jessevdk/go-assets
+
+```go
+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 {
+		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
+}
+```
+
+请参阅`examples / assets-in-binary`目录中的完整示例。
+
+### Bind form-data request with custom struct
+
+以下示例使用自定义结构：
+
+```go
+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()
+}
+```
+
+使用命令`curl`命令结果：
+
+```
+$ 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"}}
+```
+
+**注意**:不支持以下样式结构：
+
+```go
+type StructX struct {
+    X struct {} `form:"name_x"` // HERE have form
+}
+
+type StructY struct {
+    Y StructX `form:"name_y"` // HERE have form
+}
+
+type StructZ struct {
+    Z *StructZ `form:"name_z"` // HERE have form
+}
+```
+
+总之，只支持现在没有`form`的嵌套自定义结构。
+
+### 尝试将 body 绑定到不同的结构中
+
+绑定请求体的常规方法使用`c.Request.Body`和它们
+不能多次调用。
+
+```go
+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 {
+    ...
+  }
+}
+```
+
+为此，您可以使用`c.ShouldBindBodyWith`.
+
+```go
+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 {
+    ...
+  }
+}
+```
+
+
+482/5000
+*`c.ShouldBindBodyWith`在绑定之前将body存储到上下文中。 这有
+对性能有轻微影响，所以如果你这样做，你不应该使用这种方法
+足以立刻调用绑定。
+*只有某些格式需要此功能 - “JSON”，“XML”，“MsgPack”，
+`ProtoBuf`。 对于其他格式，`Query`，`Form`，`FormPost`，`FormMultipart`，
+可以被`c.ShouldBind（）`多次调用而不会造成任何损害
+表现（见[＃1341]（https://github.com/gin-gonic/gin/pull/1341））。
+
+### http2 server 推送
+
+
+http.Pusher仅支持** go1.8 + **。 有关详细信息，请参阅[golang blog]（https://blog.golang.org/h2push）。
+
+[embedmd]:# (examples/http-pusher/main.go go)
+```go
+package main
+
+import (
+	"html/template"
+	"log"
+
+	"github.com/gin-gonic/gin"
+)
+
+var html = template.Must(template.New("https").Parse(`
+<html>
+<head>
+  <title>Https Test</title>
+  <script src="/assets/app.js"></script>
+</head>
+<body>
+  <h1 style="color:red;">Welcome, Ginner!</h1>
+</body>
+</html>
+`))
+
+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")
+}
+```
+
+### 定义路由日志的格式
+
+路由的默认日志是：
+```
+[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)
+```
+
+如果要以给定格式记录此信息（例如JSON，键值或其他内容），则可以使用`gin.DebugPrintRouteFunc`定义此格式。
+在下面的示例中，我们使用标准日志包记录所有路由，但您可以使用其他适合您需求的日志工具。
+```go
+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()
+}
+```
+
+
+## 测试
+
+`net / http / httptest`包是HTTP测试的首选方式。
+
+```go
+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")
+}
+```
+
+测试上面的代码示例：
+
+```go
+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())
+}
+```
+
+## 用户
+
+
+使用[Gin]（https://github.com/gin-gonic/gin）Web框架的令人敬畏的项目列表。
+
+* [drone]（https://github.com/drone/drone）：drone，用Go编写。
+* [gorush]（https://github.com/appleboy/gorush）：用Go编写的推送通知服务器。
+* [fnproject]（https://github.com/fnproject/fn）：容器本机，云无关的无服务器平台。