Flex整合Spring

工程需要整合Spring和Flex,在网上众多方法中找到了下面这种,记录留存。

个人认为该方法更适合在已有Spring框架的工程中添加Flex时使用,对原工程内容(主要指配置文件)改动较小。

1.添加Spring,在web.xml文件里添加配置

<context-param>

    <param-name>contextConfigLocation</param-name>

    <param-value>/WEB-INF/applicationContext.xml</param-value>

</context-param>

<listener>

 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

2.在flex的services-config.xml文件里添加Spring工厂

<factories>
<factory id="spring" class="com.flex.factories.SpringFactory"/>
</factories>

3.在Spring里面定义bean

<bean id="testClass" class="com.....TestService">
<property name="dataSource" ref="dataSource"/>
</bean>

4.在flex的远程对象配置文件里配置远程对象,这里要指定远程对象的创建工厂为第2步配置的工厂,远程对象的source要指向Spring里定义的bean

<destination id="test">
<properties>
<factory>spring</factory>
<source>testClass</source>
</properties>
</destination>

5.在页面就可以使用远程对象了

private function send():void{

    test.doSomething(...);

}

附:需要的SpringFactory

import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException; import flex.messaging.FactoryInstance;
import flex.messaging.FlexFactory;
import flex.messaging.config.ConfigMap;
import flex.messaging.services.ServiceException; public class SpringFactory implements FlexFactory
{
private static final String SOURCE = "source"; public void initialize(String id, ConfigMap configMap) {} public FactoryInstance createFactoryInstance(String id, ConfigMap properties)
{
SpringFactoryInstance instance = new SpringFactoryInstance(this, id, properties);
instance.setSource(properties.getPropertyAsString(SOURCE, instance.getId()));
return instance;
} // end method createFactoryInstance() public Object lookup(FactoryInstance inst)
{
SpringFactoryInstance factoryInstance = (SpringFactoryInstance) inst;
return factoryInstance.lookup();
} static class SpringFactoryInstance extends FactoryInstance
{
SpringFactoryInstance(SpringFactory factory, String id, ConfigMap properties)
{
super(factory, id, properties);
} public String toString()
{
return "SpringFactory instance for id=" + getId() + " source=" + getSource() + " scope=" + getScope();
} public Object lookup()
{
ApplicationContext appContext = WebApplicationContextUtils.getWebApplicationContext(flex.messaging.FlexContext.getServletConfig().getServletContext());
String beanName = getSource(); try
{
return appContext.getBean(beanName);
}
catch (NoSuchBeanDefinitionException nexc)
{
ServiceException e = new ServiceException();
String msg = "Spring service named '" + beanName + "' does not exist.";
e.setMessage(msg);
e.setRootCause(nexc);
e.setDetails(msg);
e.setCode("Server.Processing");
throw e;
}
catch (BeansException bexc)
{
ServiceException e = new ServiceException();
String msg = "Unable to create Spring service named '" + beanName + "' ";
e.setMessage(msg);
e.setRootCause(bexc);
e.setDetails(msg);
e.setCode("Server.Processing");
throw e;
}
} } }
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