Spring集成RMI实现远程调用

　　前提：

　　1.开发工具：

　　　　jdk tomcat ecplise，开发工具的使用本篇不做介绍。

　　2.需具备以下知识：javase servelt web rmi spring maven 

一、关于RMI

　　请参考另外一篇文章：https://www.cnblogs.com/liandy001/p/11182055.html

二、Spring的远程技术　　

• 远程方法调用（RMI）：通过使用 RmiProxyFactoryBean 和 RmiServiceExporter，Spring同时支持传统的RMI（使用 java.rmi.Remote接口和java.rmi.RemoteException）和通过RMI调用器实现的透明远程调用（支持任何Java接口）。
• Spring的HTTP调用器：Spring提供了一种特殊的允许通过HTTP进行Java串行化的远程调用策略，支持任意Java接口（就像RMI调用器）。相对应的支持类是 HttpInvokerProxyFactoryBean和 HttpInvokerServiceExporter。
• Hessian：通过 HessianProxyFactoryBean 和 HessianServiceExporter，可以使用Caucho提供的基于HTTP的轻量级二进制协议来透明地暴露服务。
• Burlap：待补充。
• JAX RPC：待补充。
• JMS：待补充。

三、服务端

　　服务端我们采用常见的web应用（当然普通应用也是一样的），web应用在tomcat服务器启动后，通过DispatcherServlet初始化spring容器，创建远程对象并在注册表注册。

　　1.创建web应用

　　

　　

　　

　　

　　 

　　2.通过maven管理项目的jar包

　　

　　

　　3.配置pom依赖的jar包　　

  <properties>
      <spring.version>4.0.2.RELEASE</spring.version>
    <mybatis.version>3.2.8</mybatis.version>
    <slf4j.version>1.7.12</slf4j.version>
    <log4j.version>1.2.17</log4j.version>
  </properties>
  <dependencies>
        <!-- 单元测试 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <!-- 表示开发的时候引入，发布的时候不会加载此包 -->
            <scope>test</scope>
        </dependency>
        <!-- java ee包 -->
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>7.0</version>
        </dependency>
        <!-- spring框架包 start -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-oxm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- spring框架包 end -->
        <!-- mybatis框架包 start -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>
        <!-- mybatis框架包 end -->
        <!-- 数据库驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>
        <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <!-- jstl标签类 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!-- log END -->
        <!-- Json -->
        <!-- 格式化对象，方便输出日志 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.6</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>
        <!-- 上传组件包 start -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.10</version>
        </dependency>
        <!-- 上传组件包 end -->
 
        <!-- AL相关添加 -->
        <dependency>
            <groupId>net.sourceforge.jexcelapi</groupId>
            <artifactId>jxl</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.8</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.9</version>
        </dependency>    
  </dependencies>

　　

 　　4.创建域模型及service　　

/**  
 * @Title:  Fruit.java   
 * @Package cn.com.kamfu   
 * @Description:    TODO(用一句话描述该文件做什么)   
 * @author: liandy    
 * @date:   2019年7月13日 下午10:21:02   
 * @version V1.0 
 */
package cn.com.kamfu;



import java.io.Serializable;
import java.util.Date;
/**   
 * @ClassName:  Fruit   
 * @Description:TODO(这里用一句话描述这个类的作用)   
 * @author: liandy 
 * @date:   2019年7月13日 下午10:21:02   
 *     
 */
public class Fruit implements Serializable{
    private static final long serialVersionUID = 1883838732853579826L;
    
    Integer id;//编号
    String name;//名称
    Double weight;//重量
    String color;//颜色
    Date pickDay;//采摘日期
    
    public Fruit() {
        super();
    }
    
    public Fruit(Integer id, String name, Double weight, String color, Date pickDay) {
        super();
        this.id = id;
        this.name = name;
        this.weight = weight;
        this.color = color;
        this.pickDay = pickDay;
    }



    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getWeight() {
        return weight;
    }

    public void setWeight(Double weight) {
        this.weight = weight;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public Date getPickDay() {
        return pickDay;
    }

    public void setPickDay(Date pickDay) {
        this.pickDay = pickDay;
    }

    @Override
    public String toString() {
        return "Fruit [id=" + id + ", name=" + name + ", weight=" + weight + ", color=" + color + ", pickDay=" + pickDay + "]";
    }
    
    
}

/**  
 * @Title:  IService.java   
 * @Package cn.com.kamfu   
 * @Description:    TODO(用一句话描述该文件做什么)   
 * @author: liandy    
 * @date:   2019年7月13日 下午10:21:39   
 * @version V1.0 
 */
package cn.com.kamfu;

/**   
 * @ClassName:  IService   
 * @Description:TODO(这里用一句话描述这个类的作用)   
 * @author: liandy 
 * @date:   2019年7月13日 下午10:21:39   
 *     
 */
public interface IService {
     String eat(String fruitName);

     String eat(Fruit fruit);
}

/**  
 * @Title:  Service.java   
 * @Package cn.com.kamfu   
 * @Description:    TODO(用一句话描述该文件做什么)   
 * @author: liandy    
 * @date:   2019年7月13日 下午10:22:02   
 * @version V1.0 
 */
package cn.com.kamfu;

/**   
 * @ClassName:  Service   
 * @Description:TODO(这里用一句话描述这个类的作用)   
 * @author: liandy 
 * @date:   2019年7月13日 下午10:22:02   
 *     
 */
public class Service implements IService {

    /**   
     * <p>Title: eat</p>   
     * <p>Description: </p>   
     * @param fruitName
     * @return   
     * @see cn.com.kamfu.IService#eat(java.lang.String)   
     */
    @Override
    public String eat(String fruitName) {
        // TODO Auto-generated method stub
        System.out.println("begin------");
        System.out.println("i'm eating"+ fruitName );
        System.out.println("end------");
        return "service ha eaten " + fruitName;
    }

    /**   
     * <p>Title: eat</p>   
     * <p>Description: </p>   
     * @param fruit
     * @return   
     * @see cn.com.kamfu.IService#eat(cn.com.kamfu.Fruit)   
     */
    @Override
    public String eat(Fruit fruit) {
        // TODO Auto-generated method stub
        System.out.println("begin------");
        System.out.println("i'm eating"+fruit);
        System.out.println("end------");
        return "service has eaten "+ fruit;
    }

}

　　

　　5.在类目录下创建spring容器　　

<?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"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-4.2.xsd">
    <!-- 人接口 -->
    <bean id="service" class="cn.com.kamfu.Service"/>
    
    <bean name="/service" class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
        <property name="service" ref="service" />
        <property name="serviceInterface" value="cn.com.kamfu.IService" />
    </bean>    
</beans>

　　6.web.xml中初始化spring容器　　

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>SpringRMIServer</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
    <servlet>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:/remote-service.xml</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

　　7.导出jar包（客户端依赖）　　

　　

　　

 　　

　　  一直next，直至Finish，命名为service.jar并保存到本地。

　　8.项目总体结构

　　

四、客户端

　　1.创建普通Java应用程序

　　

　　

　　2.通过maven管理项目的jar包

　　

　　3.配置pom依赖的jar包　　

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>SpringRMIClient</groupId>
  <artifactId>SpringRMIClient</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.0</version>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <dependencies>
         <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-core</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-ldap</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-acl</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-cas</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>



        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.7.3</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.7.3</version>
        </dependency>

        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.2.21.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>4.2.21.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.3.2.Final</version>
        </dependency>


        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.38</version>
        </dependency>

        <dependency>
            <groupId>org.hamcrest</groupId>
            <artifactId>hamcrest-all</artifactId>
            <version>1.3</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.20</version>
        </dependency>


        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf</artifactId>
            <version>3.0.2.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring4</artifactId>
            <version>3.0.2.RELEASE</version>
        </dependency>      
  </dependencies>
</project>

　　

　　4.导入服务jar包（service.jar）

　　

　　

 　　5.创建Spring容器　　

<?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"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-4.2.xsd">

        <bean id="service"
            class="org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean">
            <property name="serviceUrl">
                <value>http://localhost:8080/SpringRMIServer/service</value>
            </property>
            <property name="serviceInterface">
                <value>cn.com.kamfu.IService</value>
            </property>
        </bean>       
</beans>

　　

　　6.编写主程序　　

/**  
 * @Title:  App.java   
 * @Package cn.com.kamfu   
 * @Description:    TODO(用一句话描述该文件做什么)   
 * @author: liandy    
 * @date:   2019年7月13日 下午10:10:04   
 * @version V1.0 
 */
package cn.com.kamfu;

import java.util.Date;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**   
 * @ClassName:  App   
 * @Description:TODO(这里用一句话描述这个类的作用)   
 * @author: liandy 
 * @date:   2019年7月13日 下午10:10:04   
 *     
 */
public class App {
    public static ApplicationContext context = new ClassPathXmlApplicationContext("remote-client-local.xml");
    /**   
     * @Title: main   
     * @Description: TODO(这里用一句话描述这个方法的作用)   
     * @param: @param args      
     * @return: void      
     * @throws   
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        eatFruit1();
        eatFruit2();
        
    }
    public static void eatFruit1()  {
        IService service = (IService) context.getBean("service");
        String  response = service.eat("苹果");
        System.out.println(response);
    }
    
    public static void eatFruit2()  {
        IService service = (IService) context.getBean("service");
        Fruit fruit = new Fruit(1,"西瓜",2.2d,"green",new Date());
        String  response = service.eat(fruit);
        System.out.println(response);
    }
}

　　

五、模拟客户端远程访问服务端

　　1.启动Server端web应用

　　

　　2.查看控制台tomcat是否启动成功

　　3.启动Client端访问Server端

 　　4.通过客户端控制台console可以查看到方法成功被调用。