今天面试被问及到一个只是简单听说过,但是没有去用过的东西,用了简短的一会时间去看了下Spring的rmi文档,大致实现方式有其下几种
1.org.springframework.remoting.rmi.RmiProxyFactoryBean
其使用的是rmi协议实现
实现过程,首先是服务端
定义一个导出类
public interface AccountService { String getUsername(); }
public class AccountServiceImpl implements AccountService{ @Override public String getUsername() { return "RMI Test!"; } }
rmi.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.xsd"> <bean id="accountService" class="example.AccountServiceImpl"> <!-- any additional properties, maybe a DAO? --> </bean> <bean class="org.springframework.remoting.rmi.RmiServiceExporter"> <!-- 这里的服务名可以随意填写但是必须和rmi://hostname:1199/xxxxxxx的xxxxxxx相同 --> <property name="serviceName" value="AccountService"/> <!-- 导出实体 --> <property name="service" ref="accountService"/> <!-- 导出接口,这个为导出接口,注意,客户端包名可以和这里不同,但是为了统一建议做一个coreInterface 包,以便以后维护方便 --> <property name="serviceInterface" value="example.AccountService"/> <!-- 端口号,默认为1099,这里注意占用问题 --> <property name="registryPort" value="1199"/> </bean> </beans>
启动服务
public class Main { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("rmi.xml"); AccountService service = context.getBean("accountService", AccountService.class); String userName = service.getUsername(); System.out.println(userName); } }
接下来客户端如下
public interface AccountService { String getUsername(); }
rmi.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.xsd"> <bean id="accountService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean"> <!-- 接收的rmi协议 --> <property name="serviceUrl" value="rmi://localhost:1199/AccountService"/> <!-- 接收的rmi协议的接口 --> <property name="serviceInterface" value="example.AccountService"/> </bean> </beans>
启动程序
public class Main { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("rmi.xml"); AccountService service = context.getBean("accountService", AccountService.class); String userName = service.getUsername(); System.out.println(userName); } }
这样就可以在服务器端得到了RMI Test!
当我们在启动服务端的时候会发现,其控制台一直在运行状态,当结束后,还会有rmi进程在运行。其接口协议为rmi://hostname:1199/xxxxxxx
Rmi在Spring中的使用之RmiProxyFactoryBean
原文:http://my.oschina.net/u/1179414/blog/338245