【Spring学习笔记-MVC-6】SpringMVC 之@RequestBody 接收Json数组对象

2021-07-12 21:58:48

作者：ssslinppp

1. 摘要

程序流程：

前台使用ajax技术，传递json字符串到后台；
后台使用Spring MVC注解@RequestBody 接受前台传递的json字符串，并返回新的json字符串到前台；
前台接受后台传递过来的json数据，并显示。

【Spring学习笔记-MVC-6】SpringMVC 之@RequestBody 接收Json数组对象

2. 前台界面和js


<%@ page language="java" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
	response.setHeader("Pragma", "no-cache");
	response.setHeader("Cache-Control", "no-cache");
	response.setDateHeader("Expires", 0);
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>SpringMVC+ajax+json</title>
<script type="text/javascript">var basePath = "<%=basePath%>";</script>
<%-- <link rel="stylesheet" type="text/css" href="<%=basePath%>js/easyui/demo.css"> --%>
<script type="text/javascript" src="<%=basePath%>js/JQuery/jquery.min.js"></script>
<script type="text/javascript" src="<%=basePath%>js/test/ajaxAndJson.js"></script>

</head>
<body>
    <div style="padding:5px 0;">
        <p>SpringMVC @RequestBody 接收Json数组对象</p>
		<a href="#" class="easyui-linkbutton" onclick="loadData()" data-options="iconCls:'icon-add'">@RequestBody 接收Json数组对象</a>
	</div>
</body>
</html>

3. 后台java代码

http://localhost:8080/SpringMVCTest/test/index.action 请求后，返回index.jsp界面，如下图：

点击后会请求jsonDataReq

这是person.java类

4. 配置

web.xml


<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 	xmlns="http://java.sun.com/xml/ns/javaee" 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
	<!-- 从类路径下加载Spring配置文件，classpath关键字特指从类路径下加载 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>
	<!-- 负责启动Spring容器的监听器 -->
	<listener><listener-class>org.springframework.web.context.ContextLoaderListener
	</listener-class></listener>

   <!-- 配置Spring MVC，其对应的配置文件为：servlet-name-servlet.xml, 本项目的为：spring-servlet.xml -->
	<servlet>
		<servlet-name>spring</servlet-name>
		<servlet-class>	org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>3</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>spring</servlet-name>
		<url-pattern>*.action</url-pattern>
	</servlet-mapping>
</web-app>