blazeds message filter 过滤消息——在聊天室的应用
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
<?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
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