Go语言Web: JSON

如何解析JSON数据

// json.go
package main

import (
    "gopkg.in/kataras/iris.v6"
    "gopkg.in/kataras/iris.v6/adaptors/httprouter"
)

// 用户结构体
type User struct {
    Firstname string `json:"firstname"`
    Lastname  string `json:"lastname"`
    Age       int    `json:"age"`
}

func main() {
    app := iris.New()
    app.Adapt(httprouter.New())

    app.Post("/decode", func(ctx *iris.Context) {
        var user User
        ctx.ReadJSON(&user)

        ctx.Writef("%s %s is %d years old!", user.Firstname, user.Lastname, user.Age)
    })

    app.Get("/encode", func(ctx *iris.Context) {
        peter := User{
            Firstname: "John",
            Lastname:  "Doe",
            Age:       25,
        }

        ctx.JSON(iris.StatusOK, peter)
    })

    app.Listen(":8080")
}

$ go run json.go

$ curl -s -XPOST -d'{"firstname":"Donald","lastname":"Trump","age":70}' http://localhost:8080/decode
Donald Trump is 70 years old!

$ curl -s http://localhost:8080/encode
{"firstname":"John","lastname":"Doe","age":25}