RMI，为远程方法调用，我们要用spring来实现调用：

步骤1：

编写远程接口和远程接口的实现类

接口：

package com.rmi;

public interface ISomeService {

 public String doSomeService(String some);
 public int doOtherService(int other);
}

实现类：

package com.rmi;

public class SomeService implements ISomeService {

 public int doOtherService(int other) {
  // TODO Auto-generated method stub
  return ++other;
 }

 public String doSomeService(String some) {
  // TODO Auto-generated method stub
  return some+" is proceeed";
 }

}

服务端的配置文件：

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
 
 <bean id="someService" class="com.rmi.SomeService"></bean>
 <bean id="serviceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter">
  <property name="service" ref="someService"></property>
  <property name="serviceName" value="SomeService"></property>
  <property name="serviceInterface" value="com.rmi.ISomeService"></property>
 </bean>
 </beans>

服务端启动代码：

public class RMIServer {

 /**
  * @param args
  * @throws IOException 
  */
 public static void main(String[] args) throws IOException {
  ApplicationContext ctx = new ClassPathXmlApplicationContext("rmi.xml");
  BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  while(true)
  {
   if(br.readLine().equals("exit"))
   {
    break;
   }
   
  }
  RmiServiceExporter rse = (RmiServiceExporter)ctx.getBean("serviceExporter");
  rse.destroy();

 }

}

步骤2：

编写客户端

客户端配置文件：

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
 <bean id="someServiceProxy" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
  <property name="serviceUrl" value="rmi://127.0.0.1/SomeService"/>
  <property name="serviceInterface" value="com.rmi.ISomeService"/>
 </bean>
</beans>
客户端调用服务端的代码：

package com.rmi;

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

public class RmiClient {

 /**
  * @param args
  */
 public static void main(String[] args) {
  ApplicationContext ctx = new ClassPathXmlApplicationContext("rmi-client.xml");
  ISomeService service = (ISomeService) ctx.getBean("someServiceProxy");
  System.out.println(service.doSomeService("some request"));

 }

}

注意：客户端必须要有服务端ISomeService.class的文件，这样客户端才可以有关于该服务端接口的引用，这个是和一般的webservice的调用方法是一样的