Spring+RMI

http://blog.csdn.net/arkblue/article/details/6237380

 

Spring整合RMI的原理

客户端的核心是RmiProxyFactoryBean，包含serviceURL属性和serviceInterface属性。

通过JRMP访问服务。JRMP JRMP:java remote method protocol，Java特有的,基于流的协议。

 

服务端暴露远程服务

RmiServiceExporter把任何Spring管理的Bean输出成一个RMI服务。通过把Bean包装在一个适配器类中工作。适配器类被绑定到RMI注册表中，并且将请求代理给服务类。

 

服务端程序：

1 IHelloWorld.java POJO的接口

public interface IHelloWorld {
     public String helloWorld();

     public String sayHelloToSomeBody(String someBodyName);
}

public interface IHelloWorld { public String helloWorld(); public String sayHelloToSomeBody(String someBodyName); }

 

 

2 HelloWorld.java POJO的实现

public class HelloWorld implements IHelloWorld {

     @Override
     public String helloWorld() {
         return "Hello World!";
    }

     @Override
     public String sayHelloToSomeBody(String someBodyName) {
         return "Hello World!" + someBodyName;
    }

}

public class HelloWorld implements IHelloWorld { @Override public String helloWorld() { return "Hello World!"; } @Override public String sayHelloToSomeBody(String someBodyName) { return "Hello World!" + someBodyName; } }

 

 

3 spring配置文件rmi_server_context.xml

<?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:aop="http://www.springframework.org/schema/aop"
     xmlns:tx="http://www.springframework.org/schema/tx"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx
 http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

     <bean id="helloWorld" class="springapp.rmi.rmi.HelloWorld" />

     <bean id="serviceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter">
         <property name="service" ref="helloWorld" />
         <!-- 定义服务名 -->
         <property name="serviceName" value="hello" />
         <property name="serviceInterface" value="springapp.rmi.rmi.IHelloWorld" />
         <property name="registryPort" value="8088" />
     </bean>

 </beans>

<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd"> <bean id="helloWorld" class="springapp.rmi.rmi.HelloWorld" /> <bean id="serviceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter"> <property name="service" ref="helloWorld" /> <!-- 定义服务名 --> <property name="serviceName" value="hello" /> <property name="serviceInterface" value="springapp.rmi.rmi.IHelloWorld" /> <property name="registryPort" value="8088" /> </bean> </beans>

 

 

4  服务端启动RMI的代码HelloHost.java

public class HelloHost {
     public static void main(String[] args) {
         ApplicationContext ctx = new ClassPathXmlApplicationContext(
                 "rmi_server_context.xml");
         System.out.println("RMI服务伴随Spring的启动而启动了.....");
    }
}

public class HelloHost { public static void main(String[] args) { ApplicationContext ctx = new ClassPathXmlApplicationContext( "rmi_server_context.xml"); System.out.println("RMI服务伴随Spring的启动而启动了....."); } }

 

 

 

客户端

1 配置文件rmi_client_context.xml

<?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-2.0.xsd">
     <bean id="helloWorld" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
         <property name="serviceUrl" value="rmi://10.87.40.141:8088/hello" />
         <property name="serviceInterface" value="springapp.rmi.rmi.IHelloWorld" />
    </bean>
</beans>

<?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-2.0.xsd"> <bean id="helloWorld" class="org.springframework.remoting.rmi.RmiProxyFactoryBean"> <property name="serviceUrl" value="rmi://10.87.40.141:8088/hello" /> <property name="serviceInterface" value="springapp.rmi.rmi.IHelloWorld" /> </bean> </beans>

 

 

2 客户端代码 HelloClient.java

public class HelloClient {

     public static void main(String[] args) throws RemoteException {
         ApplicationContext ctx = new ClassPathXmlApplicationContext(
                 "rmi_client_context.xml");
         IHelloWorld hs = (IHelloWorld) ctx.getBean("helloWorld");
        System.out.println(hs.helloWorld());
         System.out.println(hs.sayHelloToSomeBody("Lavasoft"));
    }

}