Flex+BlazeDS+Spring整合

Flex与服务器通讯有3中方式：HTTPService 组件访问HTTP服务，WebService 组件访问WebService服务，RemoteObject 组件访问Server端对象。第三种方法是最常用最灵活的方法，这种方式通过AMF二进制形式传递数据，需要支持AMF协议的中间件，与java通讯时使用BlazeDS(免费开源)中间件。

        新建项目

        新建Flex项目，服务器选择J2EE-->BlazeDS，LCDS WAR文件选择blazeds.war文件(下载地址http://download.csdn.net/detail/sjepy/4464788)，完成后在FlexDemo.mxml中添加如下代码：

 

<mx:DataGridwidth="400"height="200">
    <mx:columns>
        <mx:DataGridColumnheaderText="姓名"dataField="name"/>
        <mx:DataGridColumnheaderText="年龄"dataField="age"/>
        <mx:DataGridColumnheaderText="邮箱"dataField="email"/>
    </mx:columns>
</mx:DataGrid>

	<mx:DataGrid width="400" height="200">

		<mx:columns>

			<mx:DataGridColumn headerText="姓名" dataField="name"/>

			<mx:DataGridColumn headerText="年龄" dataField="age"/>

			<mx:DataGridColumn headerText="邮箱" dataField="email"/>

		</mx:columns>

	</mx:DataGrid>

        在Servers视图中添加FlexDemo，启动服务，访问http://localhost:8080/FlexDemo/FlexDemo.html，如果出现空列表则表明项目能正常运行。

 

        使用RemoteObject与java通讯

        1.在后台新建EmployeeService，返回员工信息到前台flex

 

package demo.flex.service;

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

publicclass EmployeeService {

    public List<Map> getEmpList() {

        List<Map> empList = new ArrayList<Map>();
        Map emp = null;

        for (int i = 0; i < 5; i++) {
            emp = new HashMap();
            emp.put("name", "name" + i);
            emp.put("age", 20 + i);
            emp.put("email", "email" + i + "@flex.demo");
            empList.add(emp);
        }

        return empList;
    }
}

package demo.flex.service;



import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;



public class EmployeeService { 



	public List<Map> getEmpList() {

		

		List<Map> empList = new ArrayList<Map>();

		Map emp = null;

		

		for (int i = 0; i < 5; i++) {

			emp = new HashMap();

			emp.put("name", "name" + i);

			emp.put("age", 20 + i);

			emp.put("email", "email" + i + "@flex.demo");

			empList.add(emp);

		}



		return empList;

	}

}

        2.在WEB-INF/flex/remoting-config.xml文件中添加EmployeeService 对应的 destination

 

 

<destinationid="employeeService">
    <properties>
        <source>demo.flex.service.EmployeeService</source>
    </properties>
</destination>

<destination id="employeeService">

    <properties>

        <source>demo.flex.service.EmployeeService</source>

    </properties>

</destination>

        3.修改FlexDemo.mxml，通过RemoteObject直接调用后台EmployeeService的getEmpList()方法

 

 

<s:Applicationxmlns:fx="http://ns.adobe.com/mxml/2009"
               xmlns:s="library://ns.adobe.com/flex/spark"
               xmlns:mx="library://ns.adobe.com/flex/mx"creationComplete="init()">
    <fx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;
            import mx.controls.Alert;
            import mx.events.FlexEvent;
            import mx.rpc.events.FaultEvent;
            import mx.rpc.events.ResultEvent;

            [Bindable]
            private var empList:ArrayCollection;

            protected function empRemote_resultHandler(event:ResultEvent):void
            {
                empList = event.result as ArrayCollection;
            }

            protected function empRemote_faultHandler(event:FaultEvent):void
            {
                Alert.show(event.toString());
            }

            protected function init():void
            {
                empRemote.getEmpList();
            }
        ]]>
    </fx:Script>
    <fx:Declarations>
        <s:RemoteObjectid="empRemote"destination="employeeService">
            <s:methodname="getEmpList"result="empRemote_resultHandler(event)"fault="empRemote_faultHandler(event)"/>
        </s:RemoteObject>
    </fx:Declarations>

    <mx:DataGridwidth="400"height="200"dataProvider="{empList}">
        <mx:columns>
            <mx:DataGridColumnheaderText="姓名"dataField="name"/>
            <mx:DataGridColumnheaderText="年龄"dataField="age"/>
            <mx:DataGridColumnheaderText="邮箱"dataField="email"/>
        </mx:columns>
    </mx:DataGrid>
</s:Application>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 

			   xmlns:s="library://ns.adobe.com/flex/spark" 

			   xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="init()">

	<fx:Script>

		<![CDATA[

			import mx.collections.ArrayCollection;

			import mx.controls.Alert;

			import mx.events.FlexEvent;

			import mx.rpc.events.FaultEvent;

			import mx.rpc.events.ResultEvent;

			

			[Bindable]

			private var empList:ArrayCollection;

			

			protected function empRemote_resultHandler(event:ResultEvent):void

			{

				empList = event.result as ArrayCollection;

			}

			

			protected function empRemote_faultHandler(event:FaultEvent):void

			{

				Alert.show(event.toString());

			}

			

			protected function init():void

			{

				empRemote.getEmpList();

			}

		]]>

	</fx:Script>

	<fx:Declarations>

		<s:RemoteObject id="empRemote" destination="employeeService" >

			<s:method name="getEmpList" result="empRemote_resultHandler(event)" fault="empRemote_faultHandler(event)"/>

		</s:RemoteObject>

	</fx:Declarations>

	

	<mx:DataGrid width="400" height="200" dataProvider="{empList}">

		<mx:columns>

			<mx:DataGridColumn headerText="姓名" dataField="name"/>

			<mx:DataGridColumn headerText="年龄" dataField="age"/>

			<mx:DataGridColumn headerText="邮箱" dataField="email"/>

		</mx:columns>

	</mx:DataGrid>

</s:Application>

        4.重新运行项目，界面显示后台返回的员工信息。如果弹出错误信息：HTTP:Status:url:http://localhost:8080/WebContent/messagebroker/amf....打开项目根目录，修改.flexProperties文件中serverContextRoot="/WebContent"为serverContextRoot="/FlexDemo"，刷新项目重新运行。(注：我在做本测试时没有问题，但做数据推送测试时后台一直收不到前台订阅信息，浪费了很多时间，一直以为是配置问题，最后才发现是serverContextRoot的原因，建议一定修改serverContextRoot)         整合Spring

 

        1.测试使用Spring版本为3.0.5(下载3.1.1http://download.csdn.net/detail/sjepy/5516699)，用到的jar包：

springframework及依赖包： aopalliance.jar aspectjweaver.jar cglib-nodep-2.1_3.jar(下载地址http://download.csdn.net/detail/sjepy/5516813) org.springframework.aop-3.0.5.RELEASE.jar org.springframework.asm-3.0.5.RELEASE.jar org.springframework.beans-3.0.5.RELEASE.jar org.springframework.context-3.0.5.RELEASE.jar org.springframework.core-3.0.5.RELEASE.jar org.springframework.expression-3.0.5.RELEASE.jar org.springframework.web.servlet-3.0.5.RELEASE.jar org.springframework.web-3.0.5.RELEASE.jar BlazeDS + Spring整合： org.springframework.flex-1.0.3.RELEASE.jar(下载地址http://download.csdn.net/detail/sjepy/5516755)

        2.修改web.xml，去掉所有flex相关配置(如果有的话)，添加如下配置：

 

<servlet>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:applicationContext.xml
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<!-- MessageBroker Servlet flex mapping-->
<servlet-mapping>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <url-pattern>/messagebroker/*</url-pattern>
</servlet-mapping>

	<servlet>

		<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>

		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

		<init-param>

			<param-name>contextConfigLocation</param-name>

			<param-value>

				classpath:applicationContext.xml

    		</param-value>

		</init-param>

		<load-on-startup>1</load-on-startup>

	</servlet>

	

	<!-- MessageBroker Servlet flex mapping-->

	<servlet-mapping>

		<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>

		<url-pattern>/messagebroker/*</url-pattern>

	</servlet-mapping>	

        3.在classpath下添加Spring的配置文件applicationContext.xml：

 

 

<?xmlversion="1.0"encoding="UTF-8"?>
<beansxmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:flex="http://www.springframework.org/schema/flex"
     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/flex
     http://www.springframework.org/schema/flex/spring-flex-1.0.xsd
     http://www.springframework.org/schema/context
     http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:component-scanbase-package="demo.flex"/>
    <flex:message-broker/>
</beans>

<?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:flex="http://www.springframework.org/schema/flex"

     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/flex 

     http://www.springframework.org/schema/flex/spring-flex-1.0.xsd

     http://www.springframework.org/schema/context 

     http://www.springframework.org/schema/context/spring-context-3.0.xsd">

     

	<context:component-scan base-package="demo.flex" />

	<flex:message-broker/>

</beans>

        4.在EmployeeService上添加注解：

 

 

@Component
@RemotingDestination    // 把EmployeeService暴露给Flex

@Component

@RemotingDestination	// 把EmployeeService暴露给Flex

        5.删除WEB-INF/flex下除services-config.xml以外的所有配置文件，修改services-config.xml

 

 

    <services>
<!--        <service-include file-path="remoting-config.xml" />-->
<!--        <service-include file-path="proxy-config.xml" />-->
<!--        <service-include file-path="messaging-config.xml" />  -->
        <default-channels>
            <channelref="my-amf"/>
        </default-channels>
    </services>

    <services>

<!--        <service-include file-path="remoting-config.xml" />-->

<!--        <service-include file-path="proxy-config.xml" />-->

<!--        <service-include file-path="messaging-config.xml" />  -->

		<default-channels>

			<channel ref="my-amf"/>

		</default-channels>      

    </services>

前台代码不变，完成后重新运行项目，显示效果和前面一样，至此整合完成。

        最后附完整代码下载地址：http://download.csdn.net/detail/sjepy/5522399