spring-hessian简单示例

需要包：
spring 2.5.6
hessian 3.1.6
spring2.5.6不支持hessian4.0

web容器：
tomcat 6.0


1、定义接口；

public TBean implements Serializable
{
    private String name;
    private String code;
    /**
     *todo: get and set method here
    */
}

public interface IHello
{
    TBean hello(TBean tb);
}

public class Hello implements IHello
{
     /**todo:*/
}

2、通过spring mvc公布接口
spring配置文件中增加如下代码

<bean id="hello" class="Hello"/>

<bean name="helloHessian"
   class="org.springframework.remoting.caucho.HessianServiceExporter">
   <property name="service"><ref bean="hello"/></property>
   <property name="serviceInterface">
    <value>IHello</value>
   </property>
</bean>


<bean id="urlMapping"
   class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
   <property name="mappings">
    <props>
     <prop key="/helloHessian">helloHessian</prop>
    </props>
   </property>
</bean>

配置web.xml，增加如下代码：

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:conf/spring/spring*.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>remote</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:conf/spring/spring.remote.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>remote</servlet-name>
    <url-pattern>/remote/*</url-pattern>
  </servlet-mapping>

3、将接口发布到客户端程序
将IHello复制到客户端程序
客户端spring配置
<bean id="helloHessian" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">
<property name="serviceUrl">
<value>http://xxxx:8080/hessian/remote/helloHessian</value>
</property>
<property name="serviceInterface">
<value>IHello</value>
</property>
</bean>


4、客户端调用接口
helloHessian.hello(null);

具体实现时，客户端的配置没有用到spring配置文件，而是写代码手工创建一个对象，代码如下：

public class DataSyncRemote
{
    private static HessianProxyFactoryBean hessianProxy = new HessianProxyFactoryBean();
    private Logger logger = Logger.getLogger(DataSyncRemote.class);
    static
    {
    	hessianProxy.setServiceInterface(IDataSyncHessian.class);
    }

    public static IDataSyncHessian getRemoteService(String ip)
    {
    	hessianProxy.setServiceUrl("http://"+ip+":8080/hessian/remote/helloHessian");
    	hessianProxy.setServiceInterface(IDataSyncHessian.class);
    	hessianProxy.afterPropertiesSet();
        return (IDataSyncHessian) hessianProxy.getObject();
    }

}