使用BlazeDS实现Java和Flex通信（2）---BlazeDS 与Spring集成指南

1、配置好BlazeDS的开发环境

参考“使用BlazeDS实现Java和Flex通信之hello world ”中的环境搭建过程，配置BlazeDS的开发环境。

创建com.yeeach.HelloWorldService,内容如下：

package com.yeeach;

public class HelloWorldService {
public String hello(String var1) {
return "hello " + var1;
}
public String world(String var1) {
return "world " + var1;
}
}

2、下载Spring BlazeDS Integration 1.0、Spring、jackson包

http://s3.amazonaws.com/dist.springframework.org/release/FLEX/spring-flex-1.0.0.RELEASE-with-dependencies.zip

http://s3.amazonaws.com/dist.springframework.org/release/SPR/spring-framework-2.5.6.SEC01-with-dependencies.zip

http://jackson.codehaus.org/0.9.4/jackson-asl-0.9.4.jar

放入到flex-spring/WebRoot/WEB-INF/lib

3、修改web.xml，内容如下：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
<display-name>Spring BlazeDS Integration Samples</display-name>
<description>Spring BlazeDS Integration Sample Application</description>

<!– Http Flex Session attribute and binding listener support –>
<listener>
<listener-class>flex.messaging.HttpFlexSession</listener-class>
</listener>

<!– The front controller of this Spring Web application, responsible for handling all application requests –>
<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
classpath*:/applicationContext.xml
/WEB-INF/applicationContext*.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!– Map all *.spring requests to the DispatcherServlet for handling –>
<servlet-mapping>
<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
<url-pattern>/spring/*</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.htm</welcome-file>
</welcome-file-list>

</web-app>

4、修改flex/services-config.xml，内容如下

<?xml version="1.0" encoding="UTF-8"?>
<services-config>

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

<!–
Application level default channels. Application level default channels are
necessary when a dynamic destination is being used by a service component
and no ChannelSet has been defined for the service component. In that case,
application level default channels will be used to contact the destination.
–>
<default-channels>
<channel ref="my-amf"/>
</default-channels>
</services>

<channels>
<channel-definition id="my-streaming-amf" class="mx.messaging.channels.StreamingAMFChannel">
<endpoint url="http://{server.name}:{server.port}/{context.root}/spring/messagebroker/streamingamf" class="flex.messaging.endpoints.StreamingAMFEndpoint"/>
</channel-definition>
<channel-definition id="my-amf" class="mx.messaging.channels.AMFChannel">
<endpoint url="http://{server.name}:{server.port}/{context.root}/spring/messagebroker/amf" class="flex.messaging.endpoints.AMFEndpoint"/>
<properties>
<polling-enabled>false</polling-enabled>
</properties>
</channel-definition>

<channel-definition id="my-secure-amf" class="mx.messaging.channels.SecureAMFChannel">
<endpoint url="https://{server.name}:{server.port}/{context.root}/spring/messagebroker/amfsecure" class="flex.messaging.endpoints.SecureAMFEndpoint"/>
<properties>
<add-no-cache-headers>false</add-no-cache-headers>
</properties>
</channel-definition>

<channel-definition id="my-polling-amf" class="mx.messaging.channels.AMFChannel">
<endpoint url="http://{server.name}:{server.port}/{context.root}/spring/messagebroker/amfpolling" class="flex.messaging.endpoints.AMFEndpoint"/>
<properties>
<polling-enabled>true</polling-enabled>
<polling-interval-seconds>4</polling-interval-seconds>
</properties>
</channel-definition>

<channel-definition id="my-http" class="mx.messaging.channels.HTTPChannel">
<endpoint url="http://{server.name}:{server.port}/{context.root}/spring/messagebroker/http" class="flex.messaging.endpoints.HTTPEndpoint"/>
</channel-definition>

<channel-definition id="my-secure-http" class="mx.messaging.channels.SecureHTTPChannel">
<endpoint url="https://{server.name}:{server.port}/{context.root}/spring/messagebroker/httpsecure" class="flex.messaging.endpoints.SecureHTTPEndpoint"/>
<properties>
<add-no-cache-headers>false</add-no-cache-headers>
</properties>
</channel-definition>

</channels>

<logging>
<!– You may also use flex.messaging.log.ServletLogTarget –>
<target class="flex.messaging.log.ConsoleTarget" level="info">
<properties>
<prefix>[BlazeDS] </prefix>
<includeDate>false</includeDate>
<includeTime>false</includeTime>
<includeLevel>true</includeLevel>
<includeCategory>false</includeCategory>
</properties>
<filters>
<pattern>Endpoint.*</pattern>
<pattern>Service.*</pattern>
<pattern>Configuration</pattern>
</filters>
</target>
</logging>

</services-config>

5、修改flex/remoting-config.xml，内容如下

<?xml version="1.0" encoding="UTF-8"?>
<service id="remoting-service"
class="flex.messaging.services.RemotingService">

<adapters>
<adapter-definition id="java-object" class="flex.messaging.services.remoting.adapters.JavaAdapter" default="true"/>
</adapters>

<default-channels>
<channel ref="my-amf"/>
</default-channels>
</service>

6、修改applicationContext.xml，增加BlazeDS与Spring集成配置,将Spring的bean导出为flex的Destination

共有三种方法可以将Spring的bean导出为felx的Destination

创建WEB-INF/applicationContext.xml，内容如下:

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:flex="http://www.springframework.org/schema/flex" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/flex http://www.springframework.org/schema/flex/spring-flex-1.0.xsd">

<!– Maps request paths at /messagebroker to the BlazeDS MessageBroker –>
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<value>
/messagebroker/*=_messageBroker
</value>
</property>
</bean>

<!– Dispatches requests mapped to a MessageBroker –>
<bean class="org.springframework.flex.servlet.MessageBrokerHandlerAdapter"/>

<!– Bootstraps and exposes the BlazeDS MessageBroker –>
<bean id="_messageBroker " class="org.springframework.flex.core.MessageBrokerFactoryBean" />

<!– Expose the productService bean for BlazeDS remoting –>
<!– method 1 –>
<!–
<bean id="test1" class="com.yeeach.HelloWorldService" />
<flex:remoting-destination ref="test1" />
–>
<!–  method2 –>
<!–
<bean id="test1" class="com.yeeach.HelloWorldService" >
<flex:remoting-destination />
</bean>
–>
<!–  method3 –>
<bean id="helloWorldService" class="com.yeeach.HelloWorldService" />
<bean id="test1" class="org.springframework.flex.remoting.RemotingDestinationExporter">
<property name="messageBroker" ref="mySpringManagedMessageBroker"/>
<property name="service" ref="helloWorldService"/>
</bean>
</beans>

7、创建flex-src/helloworld.mxml，内容如下

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical">
<mx:RemoteObject destination="test1"
id="test1">
<mx:method name="hello"
result="sayHelloResult(event)"/>
<mx:method name="world"
result="sayWorldResult(event)"/>
</mx:RemoteObject>
<mx:HBox>
<mx:Label text="输入："/>
<mx:TextInput id="inputStr"/>
<mx:Button label="say hello"
click="sayHello(event);"/>
<mx:Button label="say world"
click="sayWorld(event);"/>
</mx:HBox>
<mx:HBox>
<mx:Label text="结果："/>
<mx:TextArea id="result"/>
</mx:HBox>

<mx:Script>

<!--[CDATA[
import mx.rpc.events.FaultEvent;
import mx.controls.Alert;
import mx.rpc.events.ResultEvent;

function sayHello(event:Event):void
{
var inputVar:String=inputStr.text;
test1.hello(inputVar);

}

function sayWorld(event:Event):void
{
var inputVar:String=inputStr.text;
test1.world(inputVar);

}

private function sayHelloResult(event:ResultEvent):void
{
result.text=event.result.toString();
Alert.show(event.result.toString(), "返回结果");
}

private function sayWorldResult(event:ResultEvent):void
{
result.text=event.result.toString();
Alert.show(event.result.toString(), "返回结果");
}
]]-->
</mx:Script>
</mx:Application>