采用jQuery技术获得从服务器返回经MappingJacksonJsonView转化的JSON格式数据

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SpringMVC jQuery JSON

操作流程：

工程结构：

在web.xml文件中配置Spring MVC

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

  <display-name>SpringTest</display-name>
  
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
  </welcome-file-list>
  
  <context-param>
  	<param-name>contextConfigLocation</param-name>
  	<param-value>classpath:/applicationContext.xml</param-value>
  </context-param>
  
  <servlet>
	<servlet-name>springTest</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	<load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
  	<servlet-name>springTest</servlet-name>
  	<!-- 支持REST风格的URL，springTest捕获所有的请求 -->
  	<url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

springTest-servlet.xml

<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/mvc  
           http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
           http://www.springframework.org/schema/context   
           http://www.springframework.org/schema/context/spring-context-3.0.xsd">
           
	<!-- 自动扫描com.wgc.web 包下的@Controller标注的类控制器类 -->
	<context:component-scan base-package="com.wgc.web" />
	
	<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
	<mvc:annotation-driven/>
	
	<!-- 处理静态资源 -->
	<mvc:resources mapping="/static/**" location="/WEB-INF/static/" />
	
	<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver" 
		p:order="0" 
		p:defaultContentType="text/html" 
		p:ignoreAcceptHeader="true" 
		p:favorPathExtension="false" 
		p:favorParameter="true" 
		p:parameterName="content">
		<property name="mediaTypes">
			<map>
				<entry key="html" value="text/html" />
				<entry key="xml" value="application/xml" />
				<entry key="json" value="application/json" />
			</map>
		</property>
		<property name="defaultViews">
			<list>
				<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" 
					p:renderedAttributes="users" />
			</list>
		</property>
	</bean>
	<!-- 对模型视图名称的解析，在请求时模型视图名称添加前后缀 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
		p:order="10" 
		p:prefix="/WEB-INF/jsp/" p:suffix=".jsp">
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />  
	</bean>
</beans>

applicationContext.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: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
    ">
    <!-- 数据访问层配置 -->
    <import resource="classpath:/springTest-dao.xml" />
     <!--服务层配置 -->
    <import resource="classpath:/springTest-service.xml" />
</beans>

springTest-dao.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:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:p="http://www.springframework.org/schema/p"
	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/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
	
	<!-- 扫描com.wgc.dao包下所有标注@Repository的DAO组件 -->
    <context:component-scan base-package="com.wgc.dao"/>
    
    <!-- 配置数据源 -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
	<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close"
	    p:driverClassName="${jdbc.driverClassName}"
	    p:url="${jdbc.url}"
	    p:username="${jdbc.username}"
	    p:password="${jdbc.password}" />
	    
	<!-- 使用Spring JDBC:声明JdbcTemplateBean -->
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="dataSource"/>
	</bean>
	
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
	    <property name="packagesToScan">
            <list>
                <value>com.wgc.domain</value>
            </list>
        </property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQLDialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.cache.provider_class">
					org.hibernate.cache.EhCacheProvider
				</prop>
				<prop key="hibernate.cache.use_query_cache">true</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
			</props>
		</property>
	</bean>
	<bean id="hibernateTemplate"
		class="org.springframework.orm.hibernate3.HibernateTemplate"
		 p:sessionFactory-ref="sessionFactory" />
</beans>

springTest-service.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:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
    <context:component-scan base-package="com.wgc.service"/>
	<bean id="transactionManager"
		  class="org.springframework.orm.hibernate3.HibernateTransactionManager"
		  p:sessionFactory-ref="sessionFactory" />
</beans>

User.java

package com.wgc.domain;

public class User {
    private String userid;
    private String username;
    private String pass;
    
    public User() {}
    public User(String username, String pass) {
    	this.username = username;
    	this.pass = pass;
    }
    
    public String getUserid() {
        return userid;
    }
    
    public String getUsername() {
        return username;
    }
    
    public String getPass() {
        return pass;
    }
    
    public void setUserid(String userid) {
        this.userid = userid;
    }
    
    public void setUsername(String username) {
        this.username = username;
    }
    
    public void setPass(String pass) {
        this.pass = pass;
    }
}

Controller_01.java

package com.wgc.web;

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

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.wgc.domain.User;

@Controller
@RequestMapping("/test")
public class Controller_01 {
	
	@RequestMapping("/JSON")
	public String testJSON() {
		System.out.println("testJSON");
		return "testJSON";
	}
	
	@RequestMapping("/getJSON")
	public ModelAndView getJSON() {
		System.out.println("getJSON");
		ModelAndView mav = new ModelAndView();
		List<User> users = this.getUsers();
		mav.addObject("users", users);
		mav.setViewName("testJSON");
		return mav;
	}
	
	private List<User> getUsers() {
		List<User> users = new ArrayList<User>();
		users.add(new User("user_01", "123"));
		users.add(new User("user_02", "456"));
		return users;
	}
}

testJSON.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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="../static/js/jquery-1.10.1.js"></script>
   
<script type="text/javascript">
$(function(){
	$("#testJson").click(function(){
	 	$.ajax({
	 		type:"GET", 
	 		url:"http://localhost:8080/SpringTest/test/getJSON?content=json", 
	 		dataType:"json", 
	 		contentType:'application/json;charset=UTF-8',
	 		success:function(data){
	 			$("#result").empty();
	 			var strResult = "";
	 			var users = data.users;
	 			for(index in users){
					strResult += "<div class='comment'>用户名：" + users[index].username + "<br />密码：" + users[index].pass + "<hr /></div>";
		 		}
	 			$("#result").html(strResult);
	 		}, 
			error:function(){
				alert("error.");
			}
	 	});
	});
})
</script>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<title>TestJSON</title>
</head>
<body>
	<!-- 
	<c:forEach var="user" items="${users}">
		<div>
			用户名：${user.username}<br/>
			密码：${user.pass}<hr/>
		</div>
	</c:forEach>
	 -->
	 <input type="button" id="testJson" value="测试返回JSON类型数据">
	 <div id="result">获得的数据将会在这里显示</div>
</body>
</html>