路由

package main

import (
    "github.com/gin-gonic/gin"
    "time"
    "log"
)

func main()  {
    // 初始化
    router := gin.New();

    // 常规操作
    router.POST("/", func(context *gin.Context) {
        context.JSON(200,"POST")
    })
    router.GET("/", func(context *gin.Context) {
        context.JSON(200,"GET")
    })
    router.DELETE("/", func(context *gin.Context) {
        context.JSON(200,"DELETE")
    })
    router.PATCH("/", func(context *gin.Context) {
        context.JSON(200,"PATCH")
    })
    router.PUT("/", func(context *gin.Context) {
        context.JSON(200,"PUT")
    })
    router.OPTIONS("/", func(context *gin.Context) {
        context.JSON(200,"OPTIONS")
    })
    router.HEAD("/", func(context *gin.Context) {
        context.JSON(200,"HEAD")
    })
    // 多方式匹配
    // 包括 GET, POST, PUT, PATCH, HEAD, OPTIONS, DELETE, CONNECT, TRACE
    router.Any("/", func(context *gin.Context) {
        context.JSON(200,"Any")
    })
    // 参数 GET, POST, PUT, PATCH, DELETE
    router.Handle("GET","/", func(context *gin.Context) {
        context.JSON(200,"GET")
    })

    // 未知路由处理
    router.NoRoute(func(context *gin.Context) {
        context.String(404,"Not router")
    })
    // 未知调用方式
    router.NoMethod(func(context *gin.Context) {
        context.String(404,"Not method")
    })
    
    // 静态资源返回
    router.StaticFile("favicon.ico", "./resources/favicon.ico")
    // 静态资源目录
    router.Static("/css", "/var/www/css")

    // GROUP
    // 接口版本前缀
    group := router.Group("/v1")
    group.GET("user/info", func(context *gin.Context) {
        context.String(200,"username")
    })

    // Middleware
    middleware := router.Group("", func(context *gin.Context) {
        name := context.Query("name")
        if(name=="admin"){
            context.Redirect(302,"/home")
        }
        context.String(403,"Unauthorized")
    })
    middleware.GET("/home", func(context *gin.Context) {
        context.String(200,"Api home")
    })

    // 全局监控
    loger := router.Use(func(context *gin.Context) {
        t := time.Now()
        context.Set("username", "admin")
        // before request

        context.Next()

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

        // access the status we are sending
        status := context.Writer.Status()
        log.Println(status)
    })
    loger.GET("/update", func(context *gin.Context) {
        context.String(200,"Success")
    })

    // 启动服务
    router.Run(":8080")
}

输出

package main

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

func main()  {
    // 初始化
    router := gin.New();
    router.GET("about", func(context *gin.Context) {
        type About struct {
            Title string
        }
        about := About{Title:"关于我们"}
        context.JSON(200,about)
        // OUT: {"Title":"关于我们"}
        context.XML(200,about)
        // OUT: <About><Title>关于我们</Title></About>
        context.YAML(200,about)
        // Download YAML

                // 模板路径
        router.LoadHTMLGlob("tmp/*")
                // 渲染模板 g.H map[string] 变量带入
        context.HTML(200,"about.html",gin.H{
            "title": "Posts",
        })
        // OUT about.html

        context.String(200,"关于我们%s","!")
        // OUT "关于我们!"
        // 跳转
        context.Redirect(302,"/home")
        // 指定ContentType
        context.Data(200,"text/html;charset=utf-8",[]byte("<h1>title</h1>"))
        // OUT "<h1>title</h1>"
        // 格式化输出
        context.IndentedJSON(200,about)
        /* OUT:
        {
            "Title": "关于我们"
        }
        */
    })
    // 启动服务
    router.Run(":8080")
}

变量

curl -X POST -i -d "type=3" "/admin/head?id=1&type=2"
HTTP/1.1 200 OK
Content-Type: text/plain; charset=utf-8
Date: Thu, 19 Apr 2018 13:02:31 GMT
Content-Length: 43

OUT: path param name:admin attr:/head id:1 type:3%

package main

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

func main()  {
    // 初始化
    router := gin.New();
    router.POST("/:name/*attr", func(context *gin.Context) {
        context.String(200,
            "path param name:%s attr:%s id:%s type:%s",
            context.Param("name"),
            context.Param("attr"),
            context.Query("id"),
            context.PostForm("type"))
    })
    // 启动服务
    router.Run(":8080")
}