使用Spring+Struts框架，实现用json与前台进行数据交换

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
	<!-- 导入资源文件 -->
	<context:property-placeholder location="classpath:db.properties" />
	<!-- 自动扫描 -->
	<bean
		class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" />
	<!-- C3P0 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="user" value="${jdbc.user}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
		<property name="initialPoolSize" value="${jdbc.initPoolSize}"></property>
		<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
	</bean>
	<!-- 事务控制 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"
		abstract="false" lazy-init="false" autowire="default">
		<property name="dataSource">
			<ref bean="dataSource" />
		</property>
	</bean>
	<bean id="zbDAO" class="com.heu.dao.ZBDAO">
	</bean>
	<bean id="zbService" class="com.heu.service.ZBService">
		<property name="zbDAO" ref="zbDAO"></property>
	</bean>
	<bean id="zbAction" class="com.heu.action.ZBAction" scope="prototype">
		<property name="zbService" ref="zbService"></property>
	</bean>
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" 
	"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
	<constant name="struts.i18n.encoding" value="GBK" />
	<package name="json" extends="json-default" namespace="/">
		<action name="zb-*" class="zbAction" method="{1}">
			<result name="getAllZBs" type="json">
				<param name="root">dataMap</param>
				<param name="callbackParameter">callback</param>
			</result>
		</action>
	</package>
</struts>

jdbc.user=root
jdbc.password=root
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql:///ci?useUnicode=true&characterEncoding=UTF-8
jdbc.initPoolSize=5
jdbc.maxPoolSize=10

public class ZBService {
	
	private ZBDAO zbDAO;
	public ZBDAO getZbDAO() {
		return zbDAO;
	}
	public void setZbDAO(ZBDAO zbDAO) {
		this.zbDAO = zbDAO;
	}
	
	public List<ZB> getAllZBs() throws ClassNotFoundException, SQLException{
		
		List<ZB> zbs = ZBDAO.getZBs();
		return zbs;
	} 
}

public class ZBAction extends ActionSupport{
	
	private static final long serialVersionUID = 1L;
	private Map<Integer, Object> dataMap; //struct把这个map,转成json 
	private ZBService zbService;
	private List<ZB> zbList;
	
	public ZBAction(){
		dataMap = new HashMap<Integer, Object>();//一定要在构造函数进行map的初始化，否则会报空指针
	} 
	
	public ZBService getZbService() {
		return zbService;
	}
	public void setZbService(ZBService zbService) {
		this.zbService = zbService;
	}
	public String getAllZBs() throws ClassNotFoundException, SQLException{
		
		dataMap.clear();
		zbList = zbService.getAllZBs();
		
		for(Iterator<ZB> it = zbList.iterator(); it.hasNext();)
		{
			ZB zb = it.next();
			
			int id = zb.getFieldId();
			String name = zb.getName();
			int type = zb.getType();
			String fieldName = zb.getFieldName();
			
			Map<String,Object> map = new HashMap<String,Object>();
			map.put("zbName", name);
			map.put("zbType",type);
			map.put("zbFieldName", fieldName);
			dataMap.put(id,map);
		}
		return "getAllZBs";
	}
	public Map<Integer, Object> getDataMap() {
		return dataMap;
	}

 //分页查指标
        function getZBsByPage(){
            var strJson = {};
            strJson.name=zbPage;
            $.ajax({
                type:"get",
                url:"http://localhost:8080/DemoPlatform/zb-getZBsByPage.action",
                data:strJson,
                dataType:"jsonp",
                error:function(error){
                    swal("失败","获取指标信息失败","question");
                },
                success:function(data){
                    for(var zb in data){
                        var zbRow = ‘<tr id=‘+zb+‘><td>‘+data[zb].zbName+‘</td><td>‘+data[zb].zbType+‘</td></tr>‘
                        $(‘#zbTable‘).append(zbRow)
                    }
                }
            });
        }

public String getZBsByPage() throws NumberFormatException, UnsupportedEncodingException, ClassNotFoundException, SQLException{
		
		int pageNum = Integer.parseInt(java.net.URLDecoder.decode(getName(), "UTF-8"));
		dataMap.clear();
		zbList = zbService.getZBsByPage(pageNum);
		
		for(Iterator<ZB> it = zbList.iterator(); it.hasNext();)
		{
			ZB zb = it.next();
			
			int id = zb.getFieldId();
			String name = zb.getName();
			int type = zb.getType();
			String fieldName = zb.getFieldName();
			
			Map<String,Object> map = new HashMap<String,Object>();
			map.put("zbName", name);
			map.put("zbType",type);
			map.put("zbFieldName", fieldName);
			dataMap.put(id,map);
		}
		return "getZBsByPage";
	}