flex+lcds与Java通信实例

1、web.xml中配置lcds

<?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>flcds</display-name>
    <description>my flcds</description>

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

    <!-- MessageBroker Servlet -->
    <servlet>
		<servlet-name>MessageBrokerServlet</servlet-name>
		<display-name>MessageBrokerServlet</display-name>
		<servlet-class>flex.messaging.MessageBrokerServlet</servlet-class>
		<init-param>
			<param-name>services.configuration.file</param-name>
			<param-value>/WEB-INF/flex/services-config.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
    </servlet>

	<servlet-mapping>
		<servlet-name>MessageBrokerServlet</servlet-name>
		<url-pattern>/messagebroker/*</url-pattern>
	</servlet-mapping>

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

</web-app>

2、/WEB-INF/flex/services-config.xml

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

    <services>
        <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>
		
		<!--my business class-->
		<destination id="DataSource">
	        <properties>
	            <source>com.dream.main.DataSource</source>
	            <scope>application</scope>
	        </properties>
    	</destination>
	</service>

    </services>

    <channels>

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

    <logging>
        <target class="flex.messaging.log.ConsoleTarget" level="Debug">
            <properties>
                <prefix>[LCDS] </prefix>
                <includeDate>false</includeDate>
                <includeTime>false</includeTime>
                <includeLevel>false</includeLevel>
                <includeCategory>false</includeCategory>
            </properties>
            <filters>
                <pattern>*</pattern>
            </filters>
        </target>
    </logging>

    <system>
        <redeploy>
            <enabled>true</enabled>
            <watch-interval>20</watch-interval>
            <watch-file>{context.root}/WEB-INF/flex/services-config.xml</watch-file>
            <touch-file>{context.root}/WEB-INF/web.xml</touch-file>
        </redeploy>
    </system>

</services-config>

3、login.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
	<mx:Script>
		<![CDATA[
			import mx.rpc.events.ResultEvent;
			import mx.controls.Alert;
			
			private function startLogin(str:String):void{
				dataSource.login(str);
				dataSource.addEventListener(ResultEvent.RESULT,handlerLogin);
			}
			
			private function handlerLogin(e:ResultEvent) :void {
				Alert.show(e.result.toString(),"提示");
			}
		]]>
	</mx:Script>
	<mx:RemoteObject id="dataSource" destination="DataSource"/>
	<mx:Button click="startLogin('忧里修斯')" label="登陆"  x="252.5" y="190" width="132" height="32"/>
</mx:Application>

3、Java类,DataSource.java

package com.dream.main;

public class DataSource {
	
	public String login(String username){
		
		return username+":恭喜你，登陆成功！";
	}
}