Flex4+Spring3+Hibernate3+BlazeDS整合笔记

普通Java Web工程流行使用ssh框架，而当前台使用Flex制作的时候，后台就不需要用Struts了，通过使用BlazeDS远程方法调用即可。

首先，新建Java Web工程，然后添加Flex项目，详情见通过J2EE Web工程添加Flex项目，进行BlazeDS开发 。

随后，导入Jar包，flex相关的jar包在添加Flex项目的时候已经导入，这里主要是导入Spring和Hibernate相关的jar包以及spring和flex集成的jar包，我用的是spring 3.0.3和hibernate 3.2.1。 下面是lib列表：

     antlr-2.7.6.jar

    asm-2.2.3.jar
    asm-commons-2.2.3.jar
    asm-util-2.2.3.jar
    aspectjlib.jar
    aspectjrt.jar
    aspectjweaver.jar
    backport-util-concurrent.jar
    c3p0-0.9.1.jar
    cfgatewayadapter.jar
    cglib-nodep-2.1_3.jar
    com.springsource.edu.emory.mathcs.backport-3.0.0.jar
    com.springsource.net.sf.cglib-2.2.0.jar
    com.springsource.org.aopalliance-1.0.0.jar
    commons-codec-1.3.jar
    commons-collections-3.1.jar
    commons-httpclient-3.0.1.jar
    commons-io-1.4.jar
    commons-lang-2.3.jar
    commons-logging.jar
    dom4j-1.6.1.jar
    ehcache-1.2.3.jar
    flex-messaging-common.jar
    flex-messaging-core.jar
    flex-messaging-opt.jar
    flex-messaging-proxy.jar
    flex-messaging-remoting.jar
    flex-rds-server.jar
    freemarker-2.3.15.jar
    hibernate-commons-annotations-3.2.0.Final.jar
    hibernate-core-3.5.4-Final.jar
    hibernate-jpa-2.0-api-1.0.0.Final.jar
    jackson-lgpl-0.9.5.jar
    javassist.jar
    jta-1.1.jar
    log4j-1.2.15.jar
    mysql-connector-java-5.1.13-bin.jar
    org.springframework.aop-3.0.3.RELEASE.jar
    org.springframework.asm-3.0.3.RELEASE.jar
    org.springframework.aspects-3.0.3.RELEASE.jar
    org.springframework.beans-3.0.3.RELEASE.jar
    org.springframework.context-3.0.3.RELEASE.jar
    org.springframework.context.support-3.0.3.RELEASE.jar
    org.springframework.core-3.0.3.RELEASE.jar
    org.springframework.expression-3.0.3.RELEASE.jar
    org.springframework.flex-1.0.3.RELEASE.jar
    org.springframework.instrument-3.0.3.RELEASE.jar
    org.springframework.instrument.tomcat-3.0.3.RELEASE.jar
    org.springframework.jdbc-3.0.3.RELEASE.jar
    org.springframework.jms-3.0.3.RELEASE.jar
    org.springframework.orm-3.0.3.RELEASE.jar
    org.springframework.oxm-3.0.3.RELEASE.jar
    org.springframework.test-3.0.3.RELEASE.jar
    org.springframework.transaction-3.0.3.RELEASE.jar
    org.springframework.web-3.0.3.RELEASE.jar
    org.springframework.web.portlet-3.0.3.RELEASE.jar
    org.springframework.web.servlet-3.0.3.RELEASE.jar
    org.springframework.web.struts-3.0.3.RELEASE.jar
    slf4j-api-1.5.8.jar
    slf4j-log4j12-1.5.8.jar
    xalan.jar
 修改配置文件，web.xml，其中最重要的是修改原先MessegeBroker Servlet，改为由Spring web应用前端控制器处理所有请求。

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代码
    <!-- MessageBroker Servlet 单独为Flex配置xml-->  
    <servlet>  
        <servlet-name>flex</servlet-name>  
        <servlet-class>  
            org.springframework.web.servlet.DispatcherServlet  
        </servlet-class>  
        <init-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>  
                /WEB-INF/config/flex-application-config.xml  
            </param-value>  
        </init-param>  
        <load-on-startup>1</load-on-startup>  
    </servlet>  
  
    <!-- 
    Map all /messagbroker requests to the DispatcherServlet for handling 
    -->  
    <servlet-mapping>  
        <servlet-name>flex</servlet-name>  
        <url-pattern>/messagebroker/*</url-pattern>  
    </servlet-mapping>
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配置 flex-application-config.xml，注意增加的几个命名空间，需要包org.springframework.flex-1.0.3.RELEASE.jar，同时在这个文件里定义了bean，在mxml里面会引用到：

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flex-application-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:flex="http://www.springframework.org/schema/flex"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xsi:schemaLocation="   
        http://www.springframework.org/schema/beans   
        http://www.springframework.org/schema/beans/spring-beans-2.5.xsd   
        http://www.springframework.org/schema/flex   
        http://www.springframework.org/schema/flex/spring-flex-1.0.xsd">

    <!-- Bootstraps and exposes the BlazeDS MessageBroker simplest form --> 
    <flex:message-broker/>  
    
    <bean id="test" class="sample.Test">
          <property name="userDAO">
            <ref bean="userDAO" />
        </property>
          <flex:remoting-destination />
    </bean>
</beans>
 
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hibernate的配置，用到c0p0.jar，

 daoContext.xml

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<?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:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
    
    <!-- 使用c3p0定义数据源Bean -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>       
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/db"/>       
        <property name="user" value="user"/>       
        <property name="password" value="pass"/> 
    </bean>

    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.MySQLDialect
                </prop>
                <prop key="hibernate.show_sql">
                    true
                </prop>
                <prop key="hibernate.format_sql">
                    true
                </prop>
                <prop key="hibernate.show_statistics">
                    false
                </prop>
            </props>
        </property>
        
        <property name="mappingResources">
            <list>
                <value>sample/dao/User.hbm.xml</value>
            </list>
        </property>
    </bean>
    
    <bean id="userDAO" class="sample.dao.UserDAO">
        <property name="sessionFactory">
            <ref bean="sessionFactory" />
        </property>
    </bean>

</beans>
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 test.mxml，这里主要是定义和调用远程对象，远程对象的bean在上面的flex-application-config.xml里面有定义，调用类sample.Test.java中的createUser方法。

 <?xml version="1.0" encoding="utf-8"?>

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<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">

    <fx:Script>
        <![CDATA[
            
            import mx.rpc.events.FaultEvent;
            import mx.rpc.events.ResultEvent;
            protected function button_clickHandler(event:MouseEvent):void
            {
                // TODO Auto-generated method stub
                test.createUser("name","pass");
            }
            
            protected function resulth(event:ResultEvent):void
            {
                label.text="Succeed!";
            }
            
            protected function faulth(event:FaultEvent):void
            {
                label.text="failed!";
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <!-- 将非可视元素（例如服务、值对象）放在此处 -->
        <mx:RemoteObject id="ro" destination="test" result="resulth(event);" fault="faulth(event);" />
    </fx:Declarations>
    <s:Button x="165" y="96" label="点一下" width="414" height="110" fontSize="26" id="button" click="button_clickHandler(event)"/>
    <s:Label x="287" y="290" text="远程调用测试" width="202" height="50" verticalAlign="middle" textAlign="center" fontSize="22" id="label"/>
</s:Application>
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 总结：这篇笔记不大全，只是大概展现了整合这些框架的要点，其中，主要是Flex4，spring3和BlazeDS4之间的整合。尤其需要注意的是jar包的导入。

 本文没有涉及到blazeDS和spring整合实现远程方法调用服务和消息服务的配置，会在接下来写。

 这里有一个个人觉得还蛮不错的Flex教程：Flex系列教程BY蒲公英