rmi需要建立两个项目,一个是服务端的项目,一个是客户端的项目.服务端项目启动后,再启动客户端项目去调用服务端的方法.

我们建立两个maven项目:
pom.xml配置:
  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4. xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5. <modelVersion>4.0.0</modelVersion>
  6. <groupId>com.xiejl</groupId>
  7. <artifactId>test</artifactId>
  8. <version>1.0-SNAPSHOT</version>
  9. <properties>
  10. <spring-version>4.3.7.RELEASE</spring-version>
  11. </properties>
  12. <dependencies>
  13. <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
  14. <dependency>
  15. <groupId>org.springframework</groupId>
  16. <artifactId>spring-beans</artifactId>
  17. <version>${spring-version}</version>
  18. </dependency>
  19. <dependency>
  20. <groupId>org.springframework</groupId>
  21. <artifactId>spring-context</artifactId>
  22. <version>${spring-version}</version>
  23. </dependency>
  24. <dependency>
  25. <groupId>org.springframework</groupId>
  26. <artifactId>spring-context-support</artifactId>
  27. <version>${spring-version}</version>
  28. </dependency>
  29. <dependency>
  30. <groupId>org.springframework</groupId>
  31. <artifactId>spring-core</artifactId>
  32. <version>${spring-version}</version>
  33. </dependency>
  34. <dependency>
  35. <groupId>org.springframework</groupId>
  36. <artifactId>spring-aop</artifactId>
  37. <version>${spring-version}</version>
  38. </dependency>
  39. <dependency>
  40. <groupId>org.springframework</groupId>
  41. <artifactId>spring-aop</artifactId>
  42. <version>${spring-version}</version>
  43. </dependency>
  44. <dependency>
  45. <groupId>org.springframework</groupId>
  46. <artifactId>spring-orm</artifactId>
  47. <version>${spring-version}</version>
  48. </dependency>
  49. <dependency>
  50. <groupId>org.springframework</groupId>
  51. <artifactId>spring-orm</artifactId>
  52. <version>${spring-version}</version>
  53. </dependency>
  54. <dependency>
  55. <groupId>org.springframework</groupId>
  56. <artifactId>spring-web</artifactId>
  57. <version>${spring-version}</version>
  58. </dependency>
  59. <dependency>
  60. <groupId>org.springframework</groupId>
  61. <artifactId>spring-webmvc</artifactId>
  62. <version>${spring-version}</version>
  63. </dependency>
  64. <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->
  65. <dependency>
  66. <groupId>org.aspectj</groupId>
  67. <artifactId>aspectjrt</artifactId>
  68. <version>1.8.10</version>
  69. </dependency>
  70. <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
  71. <dependency>
  72. <groupId>org.aspectj</groupId>
  73. <artifactId>aspectjweaver</artifactId>
  74. <version>1.8.10</version>
  75. </dependency>
  76. </dependencies>
  77. </project>

第一个是服务端的maven项目:
服务接口,和以前不一样了,不用实现远程接口了。HelloService:
  1. package com.xjl456852.rmi.spring;
  2. /**
  3. * 定义一个远程接口
  4. *
  5. * @author leizhimin 2009-8-17 13:53:38
  6. */
  7. public interface HelloService {
  8. /**
  9. * 简单的返回“Hello World!"字样
  10. *
  11. * @return 返回“Hello World!"字样
  12. */
  13. public String helloWorld();
  14. /**
  15. * 一个简单的业务方法,根据传入的人名返回相应的问候语
  16. *
  17. * @param someBodyName 人名
  18. * @return 返回相应的问候语
  19. */
  20. public String sayHelloToSomeBody(String someBodyName);
  21. }
服务实现类,加入了注解:
  1. package com.xjl456852.rmi.spring;
  2. import org.springframework.stereotype.Service;
  3. /**
  4. * 远程的接口的实现
  5. *
  6. * @author leizhimin 2009-8-17 13:54:38
  7. */
  8. @Service
  9. public class HelloServiceImpl implements HelloService {
  10. public HelloServiceImpl() {
  11. }
  12. /**
  13. * 简单的返回“Hello World!"字样
  14. *
  15. * @return 返回“Hello World!"字样
  16. */
  17. public String helloWorld() {
  18. return "Hello World!";
  19. }
  20. /**
  21. * 一个简单的业务方法,根据传入的人名返回相应的问候语
  22. *
  23. * @param someBodyName 人名
  24. * @return 返回相应的问候语
  25. */
  26. public String sayHelloToSomeBody(String someBodyName) {
  27. return "你好," + someBodyName + "!";
  28. }
  29. }
服务端启动程序:
  1. package com.xjl456852.rmi.spring;
  2. import org.springframework.context.ApplicationContext;
  3. import org.springframework.context.support.ClassPathXmlApplicationContext;
  4. /**
  5. * 通过Spring发布RMI服务
  6. *
  7. * @author leizhimin 2009-8-17 14:22:06
  8. */
  9. public class HelloHost {
  10. public static void main(String[] args) {
  11. ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
  12. System.out.println("RMI服务伴随Spring的启动而启动了.....");
  13. }
  14. }

Spring 配置: applicationContext.xml:
  1. <beans xmlns="http://www.springframework.org/schema/beans"
  2. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
  3. xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4. xmlns:task="http://www.springframework.org/schema/task"
  5. xsi:schemaLocation="
  6. http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
  7. http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
  8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
  9. http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
  10. http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd">
  11. <!-- component-scan自动搜索@Component , @Controller , @Service , @Repository等标注的类 -->
  12. <context:component-scan base-package="com.xjl456852" />
  13. <bean id="serviceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter">
  14. <property name="serviceName" value="rmiSpring"/>
  15. <property name="serviceInterface" value="com.xjl456852.rmi.spring.HelloService"/>
  16. <property name="registryPort" value="8888"/>
  17. <property name="service" ref="helloServiceImpl"/>
  18. </bean>
  19. </beans>
启动服务端程序,HelloHost:
 

第二个是客户端的maven项目:
客户端调用有两种方式,一种是使用Spring,一种不使用,这里仅介绍使用Spring的情况。
客户端需要依赖服务端的 HelloService接口,需要将这个接口放入到客户端中.

客户端的启动类:
  1. package com.xjl456852.rmi.spring;
  2. import org.springframework.context.ApplicationContext;
  3. import org.springframework.context.support.ClassPathXmlApplicationContext;
  4. import javax.annotation.Resource;
  5. import java.rmi.RemoteException;
  6. /**
  7. * 通过Spring来调用RMI服务
  8. *
  9. * @author leizhimin 2009-8-17 14:12:46
  10. */
  11. public class HelloClient {
  12. @Resource
  13. private HelloService helloService;
  14. public static void main(String[] args) throws RemoteException {
  15. ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
  16. HelloService hs = (HelloService) ctx.getBean("helloService");
  17. System.out.println(hs.helloWorld());
  18. System.out.println(hs.sayHelloToSomeBody("xjl456852"));
  19. }
  20. }

在Spring中配置客户端要调用服务, applicationContext.xml:
  1. <beans xmlns="http://www.springframework.org/schema/beans"
  2. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
  3. xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4. xmlns:task="http://www.springframework.org/schema/task"
  5. xsi:schemaLocation="
  6. http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
  7. http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
  8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
  9. http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
  10. http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd">
  11. <!-- component-scan自动搜索@Component , @Controller , @Service , @Repository等标注的类 -->
  12. <context:component-scan base-package="com.xjl456852" />
  13. <bean id="helloService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
  14. <property name="serviceUrl" value="rmi://192.168.176.131:8888/rmiSpring"/>
  15. <property name="serviceInterface" value="com.xjl456852.rmi.spring.HelloService"/>
  16. </bean>
  17. </beans>


启动客户端,查看结果:
 

下面是服务端发布多个服务接口的配置:
假设服务端还有一个服务,叫OtherService:
  1. package com.xjl456852.rmi.spring;
  2. /**
  3. * Created by xjl on 2017/3/19.
  4. */
  5. public interface OtherService {
  6. public int random();
  7. }
服务端的实现类:
  1. package com.xjl456852.rmi.spring;
  2. import org.springframework.stereotype.Service;
  3. import java.util.Random;
  4. /**
  5. * Created by xjl on 2017/3/19.
  6. */
  7. @Service
  8. public class OtherServiceImpl implements OtherService{
  9. Random random = new Random();
  10. public int random() {
  11. System.out.println("invoke random method");
  12. return random.nextInt(100);
  13. }
  14. }
服务端的Spring配置:
  1. <beans xmlns="http://www.springframework.org/schema/beans"
  2. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
  3. xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4. xmlns:task="http://www.springframework.org/schema/task"
  5. xsi:schemaLocation="
  6. http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
  7. http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
  8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
  9. http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
  10. http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd">
  11. <!-- component-scan自动搜索@Component , @Controller , @Service , @Repository等标注的类 -->
  12. <context:component-scan base-package="com.xjl456852" />
  13. <bean id="serviceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter">
  14. <property name="serviceName" value="rmiSpring"/>
  15. <property name="serviceInterface" value="com.xjl456852.rmi.spring.HelloService"/>
  16. <property name="registryPort" value="8888"/>
  17. <property name="service" ref="helloServiceImpl"/>
  18. </bean>
  19. <bean id="serviceExporter_Other" class="org.springframework.remoting.rmi.RmiServiceExporter">
  20. <property name="serviceName" value="rmiSpringOther"/>
  21. <property name="serviceInterface" value="com.xjl456852.rmi.spring.OtherService"/>
  22. <property name="registryPort" value="8888"/>
  23. <property name="service" ref="otherServiceImpl"/>
  24. </bean>
  25. </beans>


下面是客户端的配置:
客户端需要依赖服务端的OtherService接口
然后客户端的Spring配置如下:
  1. <beans xmlns="http://www.springframework.org/schema/beans"
  2. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
  3. xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4. xmlns:task="http://www.springframework.org/schema/task"
  5. xsi:schemaLocation="
  6. http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
  7. http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
  8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
  9. http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
  10. http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd">
  11. <!-- component-scan自动搜索@Component , @Controller , @Service , @Repository等标注的类 -->
  12. <context:component-scan base-package="com.xjl456852" />
  13. <bean id="helloService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
  14. <property name="serviceUrl" value="rmi://192.168.176.131:8888/rmiSpring"/>
  15. <property name="serviceInterface" value="com.xjl456852.rmi.spring.HelloService"/>
  16. </bean>
  17. <bean id="otherService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
  18. <property name="serviceUrl" value="rmi://192.168.176.131:8888/rmiSpringOther"/>
  19. <property name="serviceInterface" value="com.xjl456852.rmi.spring.OtherService"/>
  20. </bean>
  21. </beans>
客户端的测试类:
  1. package com.xjl456852.rmi.spring;
  2. import org.springframework.context.ApplicationContext;
  3. import org.springframework.context.support.ClassPathXmlApplicationContext;
  4. import javax.annotation.Resource;
  5. import java.rmi.RemoteException;
  6. /**
  7. * 通过Spring来调用RMI服务
  8. *
  9. * @author leizhimin 2009-8-17 14:12:46
  10. */
  11. public class HelloClient {
  12. @Resource
  13. private HelloService helloService;
  14. @Resource
  15. private OtherService otherService;
  16. public static void main(String[] args) throws RemoteException {
  17. ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
  18. HelloService hs = (HelloService) ctx.getBean("helloService");
  19. System.out.println(hs.helloWorld());
  20. System.out.println(hs.sayHelloToSomeBody("xjl456852"));
  21. OtherService os = (OtherService) ctx.getBean("otherService");
  22. System.out.println("otherService:" + os.random());
  23. }
  24. }
先启动服务端,然后再启动客户端进行调用.
服务端显示如下:
 
客户端显示如下:
 

感谢原作者:




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