使用Spring BlazeDS Integration进行数据推送服务(push data)

使用Consumer(mx.messaging.Consumer)向服务端订阅消息,服务端给订阅者推送消息

第一步:整合spring和BlazeDS 

      这一步网上资料很多,如果找不到或找到的不行的话,可留言我再将整合spring和BlazeDS整合给大家详细的解说下

第二步:

     我们先说配置

     services-config.xml中加入以下内容

<channel-definition id="my-streaming-amf"class="mx.messaging.channels.StreamingAMFChannel"><endpointurl="http://{server.name}:{server.port}/{context.root}/messagebroker/streamingamf"class="flex.messaging.endpoints.StreamingAMFEndpoint" /><properties><idle-timeout-minutes>0</idle-timeout-minutes><max-streaming-clients>100</max-streaming-clients><server-to-client-heartbeat-millis>1000</server-to-client-heartbeat-millis><user-agent-settings><!--MSIE 5, 6, 7 default max number of permanent HTTP connections is2.--><user-agent match-on="MSIE" kickstart-bytes="2048"max-streaming-connections-per-session="1" /><!-- MSIE 8 max number is 6. --><user-agent match-on="MSIE 8" kickstart-bytes="2048"max-streaming-connections-per-session="5" /><!-- Firefox 1, 2 max number is 2. --><user-agent match-on="Firefox" kickstart-bytes="2048"max-streaming-connections-per-session="1" /><!-- Firefox 3 max number is 6. --><user-agent match-on="Firefox/3" kickstart-bytes="2048"max-streaming-connections-per-session="5" /><!-- Safari 3, 4 max number is 4. --><user-agent match-on="Safari" kickstart-bytes="2048"max-streaming-connections-per-session="3" /><!-- Chrome 0, 1, 2 max number is 6. --><user-agent match-on="Chrome" kickstart-bytes="2048"max-streaming-connections-per-session="5" /><!-- Opera 7, 9 max number is 4.--><user-agent match-on="Opera" kickstart-bytes="2048"max-streaming-connections-per-session="3" /><!-- Opera 8 max number is 8. --><user-agent match-on="Opera 8" kickstart-bytes="2048"max-streaming-connections-per-session="7" /><!-- Opera 10 max number is 8. --><user-agent match-on="Opera 10" kickstart-bytes="2048"max-streaming-connections-per-session="7" /></user-agent-settings></properties></channel-definition>

 然后messaging-config.xml中加入以下配置:

<?xml version="1.0" encoding="UTF-8"?><service id="message-service" class="flex.messaging.services.MessageService"><adapters><adapter-definition id="actionscript"class="flex.messaging.services.messaging.adapters.ActionScriptAdapter"default="true" /><!--<adapter-definition id="jms"class="flex.messaging.services.messaging.adapters.JMSAdapter" />--></adapters><default-channels><channel ref="my-streaming-amf" /><channel ref="my-polling-amf" /></default-channels><destination id="testDataPush"><properties><server><allow-subtopics>true</allow-subtopics><subtopic-separator>.</subtopic-separator></server></properties><channels><channel ref="my-polling-amf" /><channel ref="my-streaming-amf" /></channels></destination></service>

然后spring bean里加入:

<bean id="defaultMessageTemplate" class="org.springframework.flex.messaging.MessageTemplate" />

不急待会会用到它,并且这很重要

第三步 服务端代码及配置

public class TestDataPush {private MessageTemplate messageTemplate;private AsyncMessage asyncMessage;public TestDataPush() {super();String clientID = UUIDUtils.createUUID();asyncMessage = new AsyncMessage();asyncMessage.setDestination("testDataPush");asyncMessage.setHeader("DSSubtopic", "3d");asyncMessage.setClientId(clientID);asyncMessage.setMessageId(UUIDUtils.createUUID());}public void test() {System.out.println("test-------------------");asyncMessage.setTimestamp(System.currentTimeMillis());asyncMessage.setBody("test");messageTemplate.getMessageBroker().routeMessageToService(asyncMessage, null);}public MessageTemplate getMessageTemplate() {return messageTemplate;}public void setMessageTemplate(MessageTemplate messageTemplate) {this.messageTemplate = messageTemplate;}}

这个java类作为flex remote调用对象,将调用test方法时我们会向订阅者发布消息
既然我们的messagebroker都交给spring管理了,相应的messagebroker我们就应该从spring提供的模板中去得到它

这时我们将之前配置的template注入到这里

<bean id="testPush" class="TestDataPush"><property name="messageTemplate" ref="defaultMessageTemplate"></property></bean>

第四步 

<?xml version="1.0" encoding="utf-8"?><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"   minWidth="955"   minHeight="600"   creationComplete="application1_creationCompleteHandler(event)"><fx:Script><![CDATA[import mx.events.FlexEvent;import mx.messaging.ChannelSet;import mx.messaging.Consumer;import mx.messaging.channels.StreamingAMFChannel;import mx.messaging.events.ChannelEvent;import mx.messaging.events.ChannelFaultEvent;import mx.messaging.events.MessageEvent;import mx.messaging.events.MessageFaultEvent;import mx.rpc.remoting.RemoteObject;var consumer:Consumer=new Consumer();protected function application1_creationCompleteHandler(event:FlexEvent):void{var myStreamingAMF:StreamingAMFChannel=new StreamingAMFChannel();myStreamingAMF.uri="http://192.168.1.212:8080/appname/messagebroker/streamingamf";var channelSet:ChannelSet=new ChannelSet();channelSet.addChannel(myStreamingAMF);consumer.destination="testDataPush";consumer.subtopic="3d";consumer.channelSet=channelSet;consumer.addEventListener(MessageEvent.MESSAGE, messageHandler);consumer.addEventListener(ChannelFaultEvent.FAULT, fault);consumer.addEventListener(MessageFaultEvent.FAULT, fault2);consumer.subscribe();//订阅}private function fault(e:ChannelFaultEvent):void{trace(e.faultDetail, e.faultString);}private function fault2(e:MessageFaultEvent):void{trace(e.faultDetail, e.faultString);}private function messageHandler(event:MessageEvent):void{trace("-----messageHandler-");trace(event.message.body);}private function messageResult(event:MessageEvent):void{trace("-----messageResult-");}private function connectHandler(event:ChannelEvent):void{trace("----connectHandler-");}private function disconnectHandler(event:ChannelEvent):void{trace("----disconnectHandler-");}protected function button1_clickHandler(event:MouseEvent):void{var ro:RemoteObject=new RemoteObject();ro.endpoint="http://192.168.1.212:8080/appname/messagebroker/streamingamf";ro.destination="testPush";ro.test();}]]></fx:Script><s:Button label="test"  click="button1_clickHandler(event)"/></s:Application>

ok,完成

再说下整个操作流程,

当flex application构建完成时创建一个consumer对象,并向服务端发出订阅, 点击test按钮时调用服务端test 方法, 此方法中向订阅都发布消息