spring与flex结合

上篇文章提到java与flex结合，这种方法简单，但缺点也很明显，不利于大型项目的开发与管理，然而现在几乎所有J2ee，JAVAEE项目都会用到spring框架，所以spring与flex结合就是一种必然。

令人高兴的是spring组织也早就意识到了这一点，推出了一款spring与flex结合的插件：Spring BlazeDS Integration

下载地址是：http://s3.amazonaws.com/dist.springframework.org/milestone/FLEX/spring-flex-1.5.0.RC1-dist.zip

通过sbi我们可以很轻松的用spring来控制java和flex的配置，而不必在flex的配置文件中配置大量的remoteObject了。

 

下面开始整合spring和flex：

1.首先新建一个web工程，名称为spring_flex_demo;

2.通过上篇文章我们知道flex通过blazeds可以与java结合，所以这里也离不开它，解压官网下载的blazeds.war到我们的工程web目录下，替换原来的文件内容。

3.右键单击项目选择“添加/修改项目类型”，选择“添加flex项目类型”，然后按我上篇文章，blazeds与java结合的例子配置，配置成功后开始准备整合spring了。

 

4.拷贝sbi 的jar包到lib目录下，拷贝spring的jar到lib下。

 

5.下面开始配置spring，首先配置web.xml。

删除原blazeds的内容，添加sbi的配置

  <!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/config/web-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>Spring MVC Dispatcher Servlet</servlet-name>
    <url-pattern>/messagebroker/*</url-pattern>
</servlet-mapping> 

 其实这段话可以在sbi的文档中找到。

 

 6.如果你想用springMVC，则可以配置成下列情况：

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        /WEB-INF/spring/*-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>

<servlet>
    <servlet-name>spring-mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>spring-mvc</servlet-name>
    <url-pattern>/spring/*</url-pattern>
</servlet-mapping>     

 完整的web.xml

<?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>

  
  <!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/config/web-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>Spring MVC Dispatcher Servlet</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>

 标红地方可以根据情况自行更改

7.更改spring配置文件：

新建一个web-application-config.xml文件，插入以下内容：

<?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">


</beans>

  这个配置文件已经添加了对flex标签的支持。

8.添加flex内容：

在web-application-config.xml添加：

<!-- Bootstraps and exposes the BlazeDS MessageBroker -->
<bean id="_messageBroker" class="org.springframework.flex.core.MessageBrokerFactoryBean" >
    <property name="servicesConfigPath" value="WEB-INF/flex/services-config.xml" />
</bean> 

 再添加

<!-- Maps request paths at /* to the BlazeDS MessageBroker -->
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    <property name="mappings">
        <value>
            /*=_messageBroker
        </value>
    </property>
</bean>

<!-- Dispatches requests mapped to a MessageBroker -->
<bean class="org.springframework.flex.servlet.MessageBrokerHandlerAdapter"/>  

 

至此spring配置算是基本完成了

9.下面配置flex，打开WEB-INF/flex/services-config.xml 修改“<channel-definition id="my-amf" class="mx.messaging.channels.AMFChannel">“为

<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>   

 

大功告成！