Spring整合 RMI

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);
}

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;
	}

}

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>

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.....");
	}
}

 

 

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>

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"));
	}

}