菜鸟学习Spring——SpringMVC注解版解析不同格式的JSON串

一、概述

不同格式的JSON串传到后台来实现功能这个是我们经常要做的一件事，本篇博客就给大家介绍四种不同的JSON串传到后台后台如何用@RequestBody解析这些不同格式的JSON串的。

二、代码展示

需要引用的jar包

1.xml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">
	<servlet>
		<servlet-name>springMVC</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>springMVC</servlet-name>
		<url-pattern>*.spring</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>
</web-app>

springMVC-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
        http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
          http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
	<context:component-scan base-package="com.gaowei.JSON" />
	<mvc:annotation-driven />
	

</beans>

2.java代码

Userinfo.java

package com.gaowei.entity;

public class Userinfo {
	private String username;
	private String password;
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
}

Test.java

package com.gaowei.JSON;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;





import com.gaowei.entity.Userinfo;

@Controller
public class Test {
	
	@RequestMapping(value="getJSON1")
	public void getJSON1(@RequestBody Userinfo userinfo){
		System.out.println("------getJSON1---start----");
		System.out.println(userinfo.getUsername());
		System.out.println(userinfo.getPassword());
		System.out.println("------getJSON1---end----");
	}
	
	@RequestMapping(value="getJSON2")
	public void getJSON2(@RequestBody ArrayList<String> list){
		System.out.println("------getJSON2---start----");
		for (int i = 0; i < list.size(); i++) {
			System.out.println(list.get(i));
		}
		System.out.println("------getJSON2---end----");
	}
	
	@RequestMapping(value="getJSON3")
	public void getJSON3(@RequestBody List<Map> list){
		System.out.println("------getJSON3---start----");
		for (int i = 0; i < list.size(); i++) {
			Map map=list.get(i);
			System.out.println(map.get("username")+" "+map.get("password"));
		}
		System.out.println("------getJSON3---end----");
	}
	
	@RequestMapping(value="getJSON4")
	public void getJSON4(@RequestBody Map map){
		System.out.println("------getJSON4---start----");
		System.out.println(map.get("username"));
		List<Map> workList=(List)map.get("work");
		for (int i = 0; i < workList.size(); i++) {
			Map eachAddressMap=workList.get(i);
			System.out.println("address="+eachAddressMap.get("address"));
		}
		Map schoolMap=(Map)map.get("school");
		System.out.println(schoolMap.get("name"));
		System.out.println(schoolMap.get("address"));
		System.out.println("------getJSON4---end----");
	}
}

3.界面代码

Test.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8" %>
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <script src="jquery-1.3.2.js">
        </script>
        <script src="json2.js">
        </script>
        <script>
            function userinfo(username, password){
                this.username = username;
                this.password = password;
            }
            
            function sendAjax1(){
                var userinfoRef = new userinfo('中国', '中国人');
                var jsonStringRef = JSON.stringify(userinfoRef);
                $.ajax({
                    type: "POST",
                    data: jsonStringRef,
                    url: "getJSON1.spring?t=" + new Date().getTime(),
                    contentType: "application/json"
                });
            }

            function sendAjax2(){
				var myArray =new Array();
				myArray[0]="中国1";
				myArray[1]="中国2";
				myArray[2]="中国3";
				myArray[3]="中国4";
				var jsonString=JSON.stringify(myArray);
			      $.ajax({
	                    type: "POST",
	                    data: jsonString,
	                    url: "getJSON2.spring?t=" + new Date().getTime(),
	                    contentType: "application/json"
	                });
                }


            function sendAjax3(){
					var myArray=new Array();
					myArray[0]= new userinfo('中国1', '中国人1');
					myArray[1]= new userinfo('中国2', '中国人2');
					myArray[2]= new userinfo('中国3', '中国人3');
					myArray[3]= new userinfo('中国4', '中国人4');
					var jsonString=JSON.stringify(myArray);
				      $.ajax({
		                    type: "POST",
		                    data: jsonString,
		                    url: "getJSON3.spring?t=" + new Date().getTime(),
		                    contentType: "application/json"
		                });
                }

            function sendAjax4(){
                var jsonObject={
					"username":"accp",
					"work":[{
						"address":"address1"
						},{
						"address":"address2"	
							}],
						"school":{
							"name":"tc",
							"address":"pjy"
							}
                        }
				var jsonString=JSON.stringify(jsonObject);
			      $.ajax({
	                    type: "POST",
	                    data: jsonString,
	                    url: "getJSON4.spring?t=" + new Date().getTime(),
	                    contentType: "application/json"
	                });
            }
        </script>
    </head>
    <body>
        <input type="button" onclick="sendAjax1()" value="sendAjax1"/>
        <br/>
        <input type="button" onclick="sendAjax2()" value="sendAjax2">
        <br/>
        <input type="button" onclick="sendAjax3()" value="sendAjax3">
        <br/>
        <input type="button" onclick="sendAjax4()" value="sendAjax4">
        <br/>
    </body>
</html>

4.效果图

三、总结。

这里要注意jar包的引用不要把Spring的所有jar包都引用了会引起jar包冲突而导致报HTTP 415的错误。@RequestBody这个方法很强大可以把JSON串转化为实体类、ArryList、Map等对象。这样的方法让我们开发人员开发效率大大的提高了

posted @ 2015-01-29 12:06 夏至冬末阅读(277) 评论(0) 编辑收藏举报

刷新页面返回顶部