SpringMVC:整合JQUERY与JSON

参考资料
1 Spring3 MVC 笔记(二) —json+rest优化
http://7454103.iteye.com/?show_full=true
2 jquery 遍历对象、数组、集合
http://blog.sina.com.cn/s/blog_5db0dfe40100hay7.html
3 jquery 遍历 map(callback)
http://kaxu.iteye.com/blog/308367
4  Jquery的map遍历
http://blog.csdn.net/niu870781892/archive/2010/04/13/5479850.aspx
5 Spring mvc3的ajax
http://xace.iteye.com/blog/731263
6 Spring MVC 学习笔记 九 json格式的输入和输出
http://starscream.iteye.com/blog/1067606

在SpringMVC中使用JSON必须注意二点
1 必须包含:jackson的jar包,我使用的是: jackson-all-1.8.1.jar,
可在官网: http://mvnrepository.com/artifact/org.codehaus.jackson中去下载
2 在springmvc.xml配置文件中必配置: <mvc:annotation-driven/>
3 jquery.json-*.*.min.js
实现功能: 从后台获取对象,List,Map在前台显示,前台提交JSON数据格式到后台并且返回
一 工程相关图片
1 工程图片
SpringMVC:整合JQUERY与JSON
2 效果图片
SpringMVC:整合JQUERY与JSON
二 具体代码
1 springmvc.xml
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
	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"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	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-3.0.xsd">
	<!-- 
		自动搜索@Controller标注的类
		用于指明系统从哪个路径下寻找controller,然后提前初始化这些对象。
	-->
	<context:component-scan base-package="com.liuzd.sj.web" />	
	<mvc:annotation-driven/>   		

	<!--  ③:对模型视图名称的解析,即在模型视图名称添加前后缀 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver"
		p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" />
    <!-- 
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<bean
					class="org.springframework.http.converter.StringHttpMessageConverter">
					<property name="supportedMediaTypes">
						<list>
							<value>text/html;charset=UTF-8</value>
						</list>
					</property>
				</bean>
			</list>
		</property>
	</bean>
	<bean id="mappingJacksonHttpMessageConverter"
		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
		
	-->
</beans>

2 springmvc与jquery整合页面
<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery/jquery-1.4.4.min.js"></script>	
	<title>Spring MVC - jQuery 整合教程</title>
</head>
<body>
<h3>Spring MVC - jQuery 整合教程</h3>
<h4>AJAX version</h4>
<p>Demo 1 计算并返回值</p>
<div style="border: 1px solid #ccc; width: 250px;">
	Add Two Numbers: <br/>
	<input id="inputNumber1" type="text" size="5"> +
	<input id="inputNumber2" type="text" size="9">
	<input type="submit" id="demo1" value="Add" /> <br/>
	Sum: <br>
	<span id="sum">(Result will be shown here)</span>
</div>
<hr><br>
<p>Demo 2 获取一个对象</p>
<div style="border: 1px solid #ccc; width: 250px;">
	<select id="userId">		
		<c:forEach var="index" begin="1" end="5" step="1">
			<option value="${index}">${index}</option>
		</c:forEach>
	</select>
	<input type="submit" id="demo2" value="Get" /> <br/>	
	<span id="info">(Result will be shown here)</span>
</div>
<hr><br>
<p>Demo 3 返回List集合对象</p>
<div style="border: 1px solid #ccc; width: 250px;">	
	<input type="submit" id="demo3" value="Get List User" /> <br/>	
	<span id="listInfo">(Result will be shown here)</span>
</div>
<hr><br>
<p>Demo 4 返回Map集合对象</p>
<div style="border: 1px solid #ccc; width: 250px;">	
	<input type="submit" id="demo4" value="Get Map User" /> <br/>	
	<span id="mapInfo">(Result will be shown here)</span>
</div>
<hr><br>
<a href="${pageContext.request.contextPath}/index.jsp">返回</a>
<hr><br>
<script type="text/javascript"> 
$(function() {
	 $("#demo1").click(function(){
		$.post("${pageContext.request.contextPath}/main/ajax/add.do",
					{inputNumber1:  $("#inputNumber1").val(),
				  	 inputNumber2:  $("#inputNumber2").val() 
				  	},
					function(data){							  													
						$("#sum").replaceWith('<span id="sum">'+ data + '</span>');							   
					});
	 });
	 
	  $("#demo2").click(function(){
	  	var userId = $("#userId").val();
		$.post("${pageContext.request.contextPath}/main/ajax/getUser/"+userId+".do",
					null,
					function(data){		
						var info = "姓名: " + data.name+",年龄: " + data.age + ",地址: " + data.address + ",性别: " + (data.sex == 1 ? "男" : "女")+",密码: " + data.password;					  													
						$("#info").html(info);							   
					});
	 });
	 
	  $("#demo3").click(function(){	  
		$.post("${pageContext.request.contextPath}/main/ajax/userList.do",
					null,
					function(data){	
							/*							
						    var info = '';	
						    var leng = data.length;						    						
							for(var i=0;i<leng;i++){
							  info += data[i].id + "," + data[i].name + "," + data[i].sex + "," + data[i].password + "," + data[i].address + "," + data[i].age+"<br>";
							}						  													
						    $("#listInfo").html(info);	*/
						    
						    var info = '';	
						     $.each(data,function(index,entity) { 
						       info += "姓名: " + entity.name+",年龄: " + entity.age + ",地址: " + entity.address + ",性别: " + (entity.sex == 1 ? "男" : "女")+",密码: " + entity.password+"<br>";   
						     });
						     $("#listInfo").html(info);
						      
						  						    				   
					});
	 });	 
	 
	 $("#demo4").click(function(){	  
		$.post("${pageContext.request.contextPath}/main/ajax/userMap.do",
					null,
					function(map){	
					     var info = '';	
					     $.each(map,function(key,values) { 
					           info += "key="+key+"<br>";
					           $(values).each(function(){      
							       info += "姓名: " + this.name+",年龄: " + this.age + ",地址: " + this.address + ",性别: " + (this.sex == 1 ? "男" : "女")+",密码: " + this.password+"<br>";
							    });    
					             
					     });
					     $("#mapInfo").html(info);				   
					});
	 });	 
	 
	 
	 
});
</script>
</body>
</html>

3 springmvc与jquery整合后台代码
package com.liuzd.sj.web;

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

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import com.liuzd.sj.entity.User;

@Controller
@RequestMapping("/main/ajax")
public class AjaxController {

	/**
	 * 根据映射跳转到指定的页面
	 */
	@RequestMapping(value = "/add", method = RequestMethod.GET)
	public String getAjaxAddPage() {
		// 解析 /WEB-INF/jsp/ajax-add-page.jsp
		return "ajax-add-page";
	}

	/**	 
     * 提交表单并进行运算.
	 */
	@RequestMapping(value = "/add", method = RequestMethod.POST)
	public @ResponseBody Integer add(
			@RequestParam(value = "inputNumber1", required = true)Integer inputNumber1,
			@RequestParam(value = "inputNumber2", required = true)Integer inputNumber2) {
		// 实现运算
		Integer sum = inputNumber1 + inputNumber2;
		System.out.println("sum: " + sum);
		// @ResponseBody 会自动的将返回值转换成JSON格式
		// 但是你必须添加jackson的jar包!!!
		return sum;
	}	

	@RequestMapping(value = "/getUser/{userId}", method = RequestMethod.POST)
	public @ResponseBody User getUser(@PathVariable("userId")String  userId) {
		System.out.println("根据ID获取用户对象: " + userId);		
		Map<String,User> users = new HashMap<String,User>();
		users.put("1", new User("123456", "李逵", "123", "成都市", "1", 23));
		users.put("2", new User("565676", "张三", "123", "北京市", "2", 53));
		users.put("3", new User("325566", "李四", "123", "河南省", "2", 93));
		users.put("4", new User("989654", "刘邦", "123", "蒙古包", "1", 13));
		users.put("5", new User("234444", "王熙凤", "123", "成都市", "1", 43));		
		return users.get(userId);
	}

	@RequestMapping(value = "/userList", method = RequestMethod.POST)
	public @ResponseBody
	List<User> getUsers() {		
		List<User> users = new ArrayList<User>();
		users.add(new User("123456", "李逵", "123", "成都市", "1", 23));
		users.add(new User("123457", "李四", "124", "北京市", "2", 53));
		users.add(new User("123458", "李三", "125", "河南市", "0", 73));
		users.add(new User("123459", "李五", "126", "大路市", "3", 93));
		return users;
	}
	
	@RequestMapping(value = "/userMap", method = RequestMethod.POST)
	public @ResponseBody Map<String,User> getUserMap() {		
		Map<String,User> users = new HashMap<String,User>();
		users.put("1", new User("123456", "李逵", "123", "成都市", "1", 23));
		users.put("2",new User("123457", "李四", "124", "北京市", "2", 53));
		users.put("3",new User("123458", "李三", "125", "河南市", "0", 73));
		users.put("4",new User("123459", "李五", "126", "大路市", "3", 93));
		return users;
	}
}

4 sprinmcv与jquery,json整合页面
<%@ page language="java" contentType="text/html; charset=UTF-8"   pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">	
	<title>Spring MVC</title>   
	<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery/jquery-1.4.4.min.js"></script>
	<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery/jquery.json-2.2.min.js"></script>   
	<script type="text/javascript">		
		   
		$(document).ready(function(){   
		
		      jQuery.ajax( {   
		        type : 'GET',   
		        contentType : 'application/json',   
		        url : '${pageContext.request.contextPath}/user/list.do',   
		        dataType : 'json',   
		        success : function(data) {   
		          if (data && data.success == "true") {   
		            $('#info').html("共" + data.total + "条数据。<br/>");   
		            $.each(data.data, function(i, item) {   
		              $('#info').append("编号:" + item.id + ",姓名:" + item.name + ",年龄:" + item.age+"<br>");   
		            });   
		          }   
		        },   
		        error : function() {   
		          alert("error")   
		        }   
		      });  
		       
		      $("#submit").click(function() {   
		        var jsonuserinfo = $.toJSON($('#form').serializeObject());   
		        alert(jsonuserinfo);   
		        jQuery.ajax( {   
		          type : 'POST',   
		          contentType : 'application/json',   
		          url : '${pageContext.request.contextPath}/user/add.do',   
		          data : jsonuserinfo,   
		          dataType : 'json',   
		          success : function(data) {   
		             if (data && data.success == "true") {   
			            $('#info').html("共" + data.total + "条数据。<br/>");   
			            $.each(data.data, function(i, item) {   
			              $('#info').append("编号:" + item.id + ",姓名:" + item.name + ",年龄:" + item.age+"<br>");   
			            });
			             alert("新增成功!");      
			          }   		           
		          },   
		          error : function(data) {   
		            alert("error")   
		          }   
		        });   
		      });   
		    });  
		    
		    //将一个表单的数据返回成JSON对象   
			$.fn.serializeObject = function() {   
			  var o = {};   
			  var a = this.serializeArray();   
			  $.each(a, function() {   
			    if (o[this.name]) {   
			      if (!o[this.name].push) {   
			        o[this.name] = [ o[this.name] ];   
			      }   
			      o[this.name].push(this.value || '');   
			    } else {   
			      o[this.name] = this.value || '';   
			    }   
			  });   
			  return o;   
			};   
	</script>
</head>   
<body>   
<div id="info"></div>   
<form action="add" method="post" id="form">   
编号:<input type="text" name="id"/>   
姓名:<input type="text" name="name"/>   
年龄:<input type="text" name="age"/> 
性别: <select name="sex">
          	<option value="1">男</option>
          	<option value="2">女</option>
     </select>
 密码: <input name="password">      
 地址:<input name="address"/>
          
<input type="button" value="提交" id="submit"/>   
</form>   
</body>   
</html>  

5 sprinmcv与jquery,json后台代码
package com.liuzd.sj.web;

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

import org.springframework.http.HttpEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.SessionAttributes;

import com.liuzd.sj.entity.User;

@Controller
@RequestMapping("/user")
@SessionAttributes("users")
public class DemoController {

	@RequestMapping(value = "/list", method = RequestMethod.GET)
	@ModelAttribute("users")
	@ResponseBody
	public Map<String, Object> getUserMaps() {

		List<User> list = new ArrayList<User>();
		User um = new User();
		um.setId("1");
		um.setName("sss");
		um.setAge(66);
		list.add(um);
		
		um = new User();
		um.setId("2");
		um.setName("aaa");
		um.setAge(44);
		list.add(um);
		
		Map<String, Object> modelMap = new HashMap<String, Object>();
		modelMap.put("total", list.size());
		modelMap.put("data", list);
		modelMap.put("success", "true");
		return modelMap;
	}

	  @RequestMapping(value = "/add", method = RequestMethod.POST)   
	  @ResponseBody   
	  //二种方式: A HttpEntity<User>  B使用注解 @ResponseBody
	  public Map<String, Object> addUser(HttpEntity<User> model,javax.servlet.http.HttpServletRequest request) {   
		System.out.println("user: " + model.getBody());
	
		Map<String, Object> map = (Map)request.getSession().getAttribute("users");
		if(null == map){
			map = getUserMaps();
		}
		List<User> list = (List<User>)map.get("data");
		list.add(model.getBody());
		map.put("total", list.size());
		map.put("data", list);
		request.getSession().setAttribute("users",map);
		return map;
	}


	@RequestMapping("/ajaxPage")
	public String ajaxAddPage() {
		return "ajax-add-page2";
	}
}

6 web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">	
	
	<context-param>
	   <param-name>log4jConfigLocation</param-name>
	   <param-value>/WEB-INF/classes/log4j.properties</param-value>
	</context-param> 
	
	 <context-param>
	  <param-name>log4jRefreshInterval</param-name>
	  <param-value>60000</param-value>
	 </context-param>	
	 <context-param>
		<param-name>log4jExposeWebAppRoot</param-name>
		<param-value>false</param-value>
	</context-param>	
	
	<listener>
	   <listener-class>
			org.springframework.web.util.Log4jConfigListener
	   </listener-class>
	</listener> 

	<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>
			org.springframework.web.filter.CharacterEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>   
            <param-name>forceEncoding</param-name>   
            <param-value>false</param-value>   
        </init-param>  
	</filter>

	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.do</url-pattern>
	</filter-mapping>
	
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.jsp</url-pattern>
	</filter-mapping>

	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>
			org.springframework.web.servlet.DispatcherServlet
		</servlet-class>		
		<init-param>
			<param-name>contextConfigLocation</param-name>							 
			 <param-value>classpath:springmvc.xml</param-value>
		</init-param>	
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
	
	 
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>

</web-app>

7 附件为工程原件,只包含jackson-all-1.8.1.jar,其它jar可在相关页面下载

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