1. 表单数据解析和绑定
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<form action="http://localhost:8000/loginForm" method="post" enctype="application/x-www-form-urlencoded">
用户名<input type="text" name="username"><br>
密码<input type="password" name="password">
<input type="submit" value="提交">
</form>
</body>
</html>
package main
import (
"net/http"
"github.com/gin-gonic/gin"
)
// 定义接收数据的结构体
type Login struct {
// binding:"required"修饰的字段，若接收为空值，则报错，是必须字段
User string `form:"username" json:"user" uri:"user" xml:"user" binding:"required"`
Pssword string `form:"password" json:"password" uri:"password" xml:"password" binding:"required"`
}
func main() {
// 1.创建路由
// 默认使用了2个中间件Logger(), Recovery()
r := gin.Default()
// JSON绑定
r.POST("/loginForm", func(c *gin.Context) {
// 声明接收的变量
var form Login
// Bind()默认解析并绑定form格式
// 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
}
// 判断用户名密码是否正确
if form.User != "root" || form.Pssword != "admin" {
c.JSON(http.StatusBadRequest, gin.H{"status": "304"})
return
}
c.JSON(http.StatusOK, gin.H{"status": "200"})
})
r.Run(":8000")
}
效果展示：
