Spring RMI 远程服务

红太狼 2024-04-20 08:57 59阅读 0赞

[Spring RMI 远程服务][Spring RMI]

在Spring中配置RMI服务

在服务端，RmiServiceExporter可以将任意一个Spring管理的Bean发布为RMI服务。

在客户端，Spring的RmiProxyFactoryBean是一个工厂Bean，可以为RMI服务创建代理。RmiProxyFactoryBean生成一个代理对象，负责客户端与远程的RMI服务进行通信。

服务端发布RMI服务

package com.x.rmi;
    
    public interface HelloService {
    	
    	public String sayHello(String name);
    	
    }

package com.x.rmi;
    
    public class HelloServiceImpl implements HelloService {
    
    	public String sayHello(String name) {
    		System.out.println("Hello " + name);
    		return "Hello " + name;
    	}
    
    }

<?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-3.0.xsd">
    	
    	<bean class="org.springframework.remoting.rmi.RmiServiceExporter">
    		<property name="service"          ref="helloService"></property>
    		<property name="serviceName"      value="HelloService"></property>
    		<property name="serviceInterface" value="com.x.rmi.HelloService"></property>
    	</bean>
    	
    	<bean id="helloService" class="com.x.rmi.HelloServiceImpl" />
    	
    </beans>

这里把helloService Bean装配进service属性中来表明RmiServiceExporter要将该Bean发布为一个RMI服务。

serviceName属性命名了RMI服务。

serviceInterface属性指定了此服务所实现的接口。

package com.x.rmi;
    
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class RmiServer {  
      
        public static void main(String[] args) throws InterruptedException {  
            new ClassPathXmlApplicationContext("com/x/rmi/remote-server.xml");
            
        }  
    }

客户端调用RMI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-3.0.xsd">
    	
    	<bean id="helloService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
    		<property name="serviceUrl"       value="rmi://localhost/HelloService"></property>
    		<property name="serviceInterface" value="com.x.rmi.HelloService"></property>
    	</bean>
    	
    </beans>

package com.x.rmi;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class RmiClient {  
        public static void main(String[] args) {  
            ApplicationContext ctx = new ClassPathXmlApplicationContext("com/x/rmi/remote-client.xml");  
            HelloService helloService = (HelloService) ctx.getBean("helloService");  
            String ret = helloService.sayHello("Rod Johnson");  
            System.out.println(ret);
        }  
      
    }

[Spring RMI]: https://blog.csdn.net/InJavaWeTrust/article/details/101063759