Go语言学习笔记

gin-router-params-bind

对于以下类型的接口请求，可以 bind 获取入参：

Content-Type: application/json
Content-Type: multipart/form-data
Content-Type: application/x-www-form-urlencoded

知识要点：

使用结构体
使用 c.shouldBindJSON 绑定 body 对象

Code

package main

import (
    "net/http"

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

type Login struct {
    Name     string `form:"name" json:"name" uri:"name" xml:"name"  binding:"required"`
    Password string `form:"password" json:"password" uri:"password" xml:"password" binding:"required"`
}

func main() {
    router := gin.Default()
    // 1.binding JSON
    // Example for binding JSON ({"user": "hanru", "password": "hanru123"})
    router.POST("/login-json", func(c *gin.Context) {
        var json Login
        //其实就是将request中的Body中的数据按照JSON格式解析到json变量中
        if err := c.ShouldBindJSON(&json); err != nil {
            c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
            return
        }
        if json.Name != "Tony" || json.Password != "123456" {
            c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"})
            return
        }
        c.JSON(http.StatusOK, gin.H{"status": "登录成功"})
    })

    // Form 表单绑定
    router.POST("/login-form", func(c *gin.Context) {
        var form Login
        //方法一：对于FORM数据直接使用Bind函数, 默认使用使用form格式解析,if c.Bind(&form) == nil
        // 根据请求头中 content-type 自动推断.
        if err := c.Bind(&form); err != nil {
            c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
            return
        }

        if form.Name != "Tony" || form.Password != "123456" {
            c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"})
            return
        }

        c.JSON(http.StatusOK, gin.H{"status": "登录成功"})
    })

    // URI 绑定
    router.GET("/login/:name/:password", func(c *gin.Context) {
        var login Login
        if err := c.ShouldBindUri(&login); err != nil {
            c.JSON(400, gin.H{"msg": err})
            return
        }
        c.JSON(200, gin.H{"name": login.Name, "password": login.Password})
    })

    router.Run(":8080")
}

测试：

http

@base = 127.0.0.1:8080

### JSON-错误测试

POST http://{{base}}/login-json?id=12312323&num=2 HTTP/1.1
Content-Type: application/json

{
  "name": "err name",
  "password": "123456"
}

### JSON-正确测试
POST http://{{base}}/login-json?id=12312323&num=2 HTTP/1.1
Content-Type: application/json

{
  "name": "Tony",
  "password": "123456"
}

### Form 测试-失败
POST http://{{base}}/login-form?id=12312323&num=2 HTTP/1.1
Content-Type: application/x-www-form-urlencoded

name=Tony
&password=1234567

### Form 测试-成功
POST http://{{base}}/login-form?id=12312323&num=2 HTTP/1.1
Content-Type: application/x-www-form-urlencoded

name=Tony
&password=123456

### URI 测试-失败
GET http://{{base}}/login/Tony/123456 HTTP/1.1

gin-router-params-bind ​

gin-router-params-bind