Echo 微型 Web 框架

Echo 是一个用 Go 语言开发的快速 HTTP 路由器（零内存分配）和微型 Web 框架。

性能比较：

特性：

Zippy router.

Extensible middleware/handler, supports:

func(*echo.Context)

http.Handler

http.HandlerFunc

func(http.ResponseWriter, *http.Request)

func(*echo.Context)

func(echo.HandlerFunc) echo.HandlerFunc

func(http.Handler) http.Handler

http.Handler

http.HandlerFunc

func(http.ResponseWriter, *http.Request)

Middleware

Handler

Handy encoding/decoding functions.

支持静态文件处理

示例代码：

package mainimport (    "net/http"    "github.com/labstack/echo"    mw "github.com/labstack/echo/middleware"    "github.com/rs/cors"    "github.com/thoas/stats")type user struct {    ID   string `json:"id"`    Name string `json:"name"`}var users map[string]userfunc init() {    users = map[string]user{        "1": user{            ID:   "1",            Name: "Wreck-It Ralph",        },    }}func createUser(c *echo.Context) {    u := new(user)    if c.Bind(u) {        users[u.ID] = *u        c.JSON(http.StatusCreated, u)    }}func getUsers(c *echo.Context) {    c.JSON(http.StatusOK, users)}func getUser(c *echo.Context) {    c.JSON(http.StatusOK, users[c.P(0)])}func main() {    e := echo.New()    //*************************//    //   Built-in middleware   //    //*************************//    e.Use(mw.Logger)    //****************************//    //   Third-party middleware   //    //****************************//    // https://github.com/rs/cors    e.Use(cors.Default().Handler)    // https://github.com/thoas/stats    s := stats.New()    e.Use(s.Handler)    // Route    e.Get("/stats", func(c *echo.Context) {        c.JSON(200, s.Data())    })    // Serve index file    e.Index("public/index.html")    // Serve static files    e.Static("/js", "public/js")    //************//    //   Routes   //    //************//    e.Post("/users", createUser)    e.Get("/users", getUsers)    e.Get("/users/:id", getUser)    // Start server    e.Run(":8080")}