Flex BlazeDS 推送技术

http://fykyx521.iteye.com/blog/382407
代码都是官方的，因为我在本地测试，所以得设置channelSet

   producer可以通过设置AsyncMessage的header 设置消息头

  cousumer可以通过设置selector来过滤消息（消息头中指定的消息），selector不写，说明不过滤，可以收到

写了，会跟消息头中的字段匹配，好像字符串不行如

message.headers["prop1"] = 10; //指定消息头 10不能是字符串
selector="prop1 = 10"   //可以用比较运算符 如：selector="prop1 >5"

如果不想接收某个信息，把selector设置为不匹配的如：selector="prop1 > 10"这样就接收不到消息。


这样就可以通过 过滤消息来 分组发 ，p2p ，发给所有人。（可能这样更复杂了，希望高人提出更简单的办法）
  producer_filter.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="init()">
<mx:Script>
<![CDATA[
	import mx.messaging.channels.AMFChannel;
import mx.messaging.*;
import mx.messaging.messages.*;
import mx.messaging.events.*;
private function sendMessage():void {
 init();

var message:AsyncMessage = new AsyncMessage();
message.headers = new Array();
message.headers["prop1"] = 10; //指定消息头
message.body = input.text;
producer.send(message);
}
//设置channelSet
private function init(){
	
				var url="http://localhost:8400/BlazedsMessage/"; //随便的以个blazeds应用
//				var myStreamingAMF:StreamingAMFChannel = new StreamingAMFChannel(url+"my-streaming-amf", url+"messagebroker/streamingamf");
				var myPollingAMF:AMFChannel = new AMFChannel(url+"my-polling-amf", url+"messagebroker/amfpolling");
				myPollingAMF.pollingEnabled = true;//轮询
				myPollingAMF.pollingInterval = 1000;//隔多长时间询问一次 1miao
				var channelSet:ChannelSet = new ChannelSet();
//				channelSet.addChannel(myStreamingAMF);
				channelSet.addChannel(myPollingAMF);
							
				producer.channelSet = channelSet;
			
}
]]>
</mx:Script>
<mx:Producer id="producer"
destination="mychat">

</mx:Producer>  
<mx:TextInput id="userName"/>
<mx:TextInput id="input"/>
<mx:Button label="Send"
click="sendMessage();"/>
</mx:Application>   

consumer_filter.mxml Flex_consumer代码

<?xml version="1.0" encoding="utf-8"?>
<!-- ds\messaging\CreateConsumerMXML.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
creationComplete="logon();">
<mx:Script>
<![CDATA[
	import mx.messaging.channels.AMFChannel;
import mx.messaging.*;
import mx.messaging.messages.*;
import mx.messaging.events.*;
// Subscribe to destination.
private function logon():void {
	init();
consumer.subscribe();//订阅
}
// Write received message to TextArea control.
//收到信息
private function messageHandler(event:MessageEvent):void {
// Handle message event.
ta.text += event.message.body + "\n";
}

private function init(){
	
				var url="http://localhost:8400/BlazedsMessage/";
//				var myStreamingAMF:StreamingAMFChannel = new StreamingAMFChannel(url+"my-streaming-amf", url+"messagebroker/streamingamf");
				var myPollingAMF:AMFChannel = new AMFChannel(url+"my-polling-amf", url+"messagebroker/amfpolling");
				myPollingAMF.pollingEnabled = true;
				myPollingAMF.pollingInterval = 1000;
				var channelSet:ChannelSet = new ChannelSet();
//				channelSet.addChannel(myStreamingAMF);
				channelSet.addChannel(myPollingAMF);
							
				consumer.channelSet = channelSet;
			
}

]]>
</mx:Script>
<mx:Consumer id="consumer"
destination="mychat"
selector="prop1 = 10"  
message="messageHandler(event);">

<!--上边的selector可以改成 selector="prop1 > 9" 也能受到信息，说明可以用比较 官方文档也很少。郁闷-->
	
</mx:Consumer>


<mx:TextArea id="ta" width="100%" height="100%"/>
</mx:Application>

  服务器端 message-config.xml

Message-config.xml代码

<?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-polling-amf"/>
    </default-channels>
	<destination id="mychat">
		
	</destination>
</service>

我不能回复，回答了15道问题，10道错误，回帖那人你说的对的  selector="prop1 > 9 ;

prop1>9是个sql表达式 意思是你还可以 这样between and.

评论

2 楼 neusoft_jerry 2014-11-26  

貌似这里没用到StreamingAMFChannel哦，只是用的my-polling-amf。
请问楼主，怎么只用my-streaming-amf而不涉及my-polling-amf？

1 楼 ridn_jache 2009-12-09  

我运行了你代码没有反应，你能帮看一下吗？