springMVC结合json向后台传送数据（一）

水深无声 2022-08-27 08:53 164阅读 0赞

本文是本人在学习网络视频springMVC的过程中的学习笔记。

此次笔记是记录从前台如何利用json向后台传送数据。

前台jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <script type="text/javascript" src="/springMVC6/js/jquery-1.7.1.min.js"></script>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Insert title here</title>
    <script type="text/javascript">
    	$(document).ready(function(){
    		$("#add").click(function(){
    			var userName = $("#userName").attr("value");
    			var age =$("#age").attr("value");
    			
    			var user = {userName:userName,age:age};
    			
    			$.ajax({
    				url:"/springMVC6/user/data/addUserJson",
    				type:"get",
    				data:user,
    				success:function(data){
    					alert("userName--->" + data.userName);
    					
    				}
    			});
    			
    			
    			
    		});
    	});
    </script>
    </head>
    <body>
    	<h>json添加用户</h>
    	
    		姓名：<input type="text" name="userName" id="userName"/>
    		年龄：<input type="text" name="age" id="age"/>
    		
    		<input type="button" value="添加" id="add">
    	
    	
    	
    	
    </body>
    </html>

接受数据的java代码

package com.tgb.web.controller.annotation;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.servlet.ModelAndView;
    
    import com.tgb.web.controller.entity.User;
    
    @Controller
    @RequestMapping("/user/data")
    public class DataController {
    	
    	@RequestMapping(value="/addUser")
    	public String addUser(User user,HttpServletRequest request){
    		request.setAttribute("userName", user.getUserName());
    		request.setAttribute("age", user.getAge());
    		
    		String result ="this is addUser------";
    		return "userManager";
    	}
    	@RequestMapping(value="/addUserJson")
    	public String addUserJson(User user,HttpServletRequest request){
    		request.setAttribute("userName", user.getUserName());
    		request.setAttribute("age", user.getAge());
    		
    		String result ="this is addUser------";
    		return "userManager";
    	}
    	
    	@RequestMapping(value="/delUser")
    	public String delUser(){
    		String result ="this is delUser------";
    		return "";
    	}
    	@RequestMapping(value="/toUser")
    	public String toUser(){
    		return "json";
    	}
    }

关键学习点在前台界面的书写方式