Spring集成Hessian

一、概述

Spring 通过org.springframework.remoting.caucho.HessianServiceExporter将POJO中的所有public方法发布为Hessian服务。

二、实例（服务端）

1、编写服务接口

 package com.cnblogs.javalouvre.service;

 public interface GreetService {

     String sayHello(String name);

 }

2、编写服务实现

 package com.cnblogs.javalouvre.service;

 import com.caucho.hessian.server.HessianServlet;

 public class GreetServiceImpl extends HessianServlet implements GreetService {

     private static final long serialVersionUID = 1880738686281295739L;

     @Override
     public String sayHello(String name) {
         return "Hello " + name;
     }

 }

3、导出Hessian服务

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
        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-4.0.xsd">

   <bean id="greetService" class="com.cnblogs.javalouvre.service.GreetServiceImpl" />

   <bean name="/GreetService" class="org.springframework.remoting.caucho.HessianServiceExporter">
     <property name="service" ref="greetService" />
     <property name="serviceInterface" value="com.cnblogs.javalouvre.service.GreetService" />
   </bean>

 </beans>

4、配置Hessian控制器

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns="http://java.sun.com/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
     version="2.5">

     <servlet>
         <servlet-name>remoting</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet-mapping>
         <servlet-name>remoting</servlet-name>
         <url-pattern>/remoting/*</url-pattern>
     </servlet-mapping>

     <welcome-file-list>
         <welcome-file>index.html</welcome-file>
         <welcome-file>index.htm</welcome-file>
         <welcome-file>index.jsp</welcome-file>
     </welcome-file-list>

 </web-app>

三、示例（客户端）

1、配置声明

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
        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-4.0.xsd">

   <bean id="greetService" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">
     <property name="serviceUrl" value="http://10.108.1.138:8080/remoting/GreetService"/>
     <property name="serviceInterface" value="com.cnblogs.javalouvre.service.GreetService"/>
   </bean>

 </beans>

2、调用方法

 package com.cnblogs.javalouvre.client;

 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.cnblogs.javalouvre.service.GreetService;

 public class Client {

     public static void main(String[] args) {
         ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
         GreetService service = context.getBean("greetService", GreetService.class);
         System.out.println(service.sayHello("Jobs"));
     }

 }