Spring BlazeDs 集成问题

环境：

Spring blazeDS Integration 1.0.0 release

blazeDS 3.2.0.3978

jdk1.6.0_06

flex sdk 3.2.0

flex builder 3

在web.xml中配置DispatcherServlet

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>flex_server</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/context-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>flex</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>flex</servlet-name>
<url-pattern>/messagebroker/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>

在flex-servlet.xml中定义destination

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:flex="http://www.springframework.org/schema/flex"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/flex http://www.springframework.org/schema/flex/spring-flex-1.0.xsd"> <flex:message-broker />
<!-- premiumService是普通的业务bean -->
<flex:remoting-destination ref="premiumService"/>
</beans>

这样在remoting-config.xml中就不需要定义destination了

<?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>
<!--注释掉，否则启动会报错或出现其他问题
<destination id="premiumService">
<properties>
<source>org.hag.flex.service.PremiumService</source>
</properties>
</destination>
-->
</service>

测试

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
creationComplete="premiumService.getPremiumList()">
<mx:Script>
<![CDATA[
<!-- 省略import -->
private function resultHandler(evt:ResultHandler):void
{
Alert.show(evt.result.toString());
}
private function faultHandler(evt:FaultHandler):void
{
Alert.show(evt.fault.toString());
}
]]>
</mx:Script>
<mx:RemoteObject id="premiumService" ref="premiumService"
result="resultHandler(event)" fault="faultHandler(event)"/>
</mx:Application>

结果这时候报错，destination "premiumService" either does not exists....
原因是mxml编译时要根据remoting-config.xml来处理destination的定义，而我们把premiumService定义在了spring bean中,所以它根本就不知道premiumService的存在。取消掉remoting-config.xml的注释，再次对mxml进行编译（如修改后保存），在浏览器中清除缓存、刷新，OK，结果出来了。

注意在tomcat启动时又要把remoting-config.xml定义的destination注释掉，否则会出问题(那是由于blazeds找到两个相同的destination)。或者干脆在其他地方建立一个文件专门用于mxml的编译。