Gin框架获取form参数

Gin框架获取form参数

登录界面

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>login</title>
</head>
<body>
<form action="/login" method="post">
    <div>
        <label for="username">username</label>
        <input type="text" name="username" id="username">
    </div>
    <div>
        <label for="password">password</label>
        <input type="password" name="password" , id="password">
    </div>
    <div>
        <input type="submit" value="登录">

    </div>
</form>
</body>
</html>

image-20211116230634018

一、PostForm方式

package main

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

func main() {

	r := gin.Default()
	r.LoadHTMLFiles("../templates/login.html")
	// 获取form表单提交数据
	r.GET("/login", func(c *gin.Context) {
		c.HTML(http.StatusOK, "login.html", nil)

	})
	// 获取数据
	r.POST("/login", func(c *gin.Context) {
		// 方式一
		username := c.PostForm("username")
		password := c.PostForm("password")


		c.JSON(http.StatusOK, gin.H{
			"username": username,
			"password": password,
		})

	})
	r.Run(":9999")
}

image-20211116230611418

二、DefaultPostForm方式

package main

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

func main() {

	r := gin.Default()
	r.LoadHTMLFiles("../templates/login.html")
	// 获取form表单提交数据
	r.GET("/login", func(c *gin.Context) {
		c.HTML(http.StatusOK, "login.html", nil)

	})
	// 获取数据
	r.POST("/login", func(c *gin.Context) {
		
		// 方式二
		username := c.DefaultPostForm("username", "body") // 取不到key,则值为默认值body
		password := c.DefaultQuery("password", "123")

		c.JSON(http.StatusOK, gin.H{
			"username": username,
			"password": password,
		})

	})
	r.Run(":9999")
}

image-20211116230615575

三、GetPostForm方式

package main

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

func main() {

	r := gin.Default()
	r.LoadHTMLFiles("../templates/login.html")
	// 获取form表单提交数据
	r.GET("/login", func(c *gin.Context) {
		c.HTML(http.StatusOK, "login.html", nil)

	})
	// 获取数据
	r.POST("/login", func(c *gin.Context) {
	
		// 方式三
		username, ok := c.GetPostForm("username")
		if !ok {
			username = "body"
		}

		password, ok := c.GetPostForm("password")
		if !ok {
			password = "sdfsdf"
		}
		c.JSON(http.StatusOK, gin.H{
			"username": username,
			"password": password,
		})

	})
	r.Run(":9999")
}

image-20211116230621090

posted @ 2021-11-30 22:08  RandySun  阅读(987)  评论(0)  编辑  收藏  举报