Dubbo实例

使用IntelliJ IDEA创建简单的Dubbo实例

https://blog.csdn.net/qq_38767816/article/details/96837921

Crazer_cy 2018-05-21 21:30:01  5671  收藏 7

分类专栏： 分布式 文章标签： dubbo zookeeper

版权

1. Zookeeper为dubbo的注册中心，dubbo服务的生产者和消费者都需要在Zookeeper进行注册；
2. 下载zookeeper压缩包并解压；
3. 进入conf目录将 zoo_sample.cfg 改名为 zoo.cfg；
4. 进入bin目录双击zkServer.cmd，若启动成功，则windows单机版zookeeper搭建成功！

 

1. 使用IntelliJ IDEA搭建Dubbo:创建一个maven空项目，作为项目的父工程
2. 在pom.xml添加以下公共的依赖：
   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.  
       
   7.  
      <groupId>com.dubbo</groupId>
   8.  
      <artifactId>dubbo_demo</artifactId>
   9.  
      <packaging>pom</packaging>
   10.  
       <version>1.0-SNAPSHOT</version>
   11.  
        
   12.  
       <properties>
   13.  
       <motan.version>0.3.0</motan.version>
   14.  
       <dubbo.version>2.5.3</dubbo.version>
   15.  
       <dubbox.version>2.8.4</dubbox.version>
   16.  
       <spring.version>4.3.6.RELEASE</spring.version>
   17.  
       <java.version>1.8</java.version>
   18.  
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   19.  
       </properties>
   20.  
        
   21.  
       <dependencies>
   22.  
       <dependency>
   23.  
       <groupId>com.alibaba</groupId>
   24.  
       <artifactId>dubbo</artifactId>
   25.  
       <version>2.5.3</version>
   26.  
       <exclusions>
   27.  
       <exclusion>
   28.  
       <groupId>org.springframework</groupId>
   29.  
       <artifactId>spring</artifactId>
   30.  
       </exclusion>
   31.  
       </exclusions>
   32.  
       </dependency>
   33.  
       <dependency>
   34.  
       <groupId>com.github.sgroschupf</groupId>
   35.  
       <artifactId>zkclient</artifactId>
   36.  
       <version>0.1</version>
   37.  
       </dependency>
   38.  
       <!-- spring相关 -->
   39.  
       <dependency>
   40.  
       <groupId>org.springframework</groupId>
   41.  
       <artifactId>spring-core</artifactId>
   42.  
       <version>${spring.version}</version>
   43.  
       </dependency>
   44.  
       <dependency>
   45.  
       <groupId>org.springframework</groupId>
   46.  
       <artifactId>spring-beans</artifactId>
   47.  
       <version>${spring.version}</version>
   48.  
       </dependency>
   49.  
       <dependency>
   50.  
       <groupId>org.springframework</groupId>
   51.  
       <artifactId>spring-context</artifactId>
   52.  
       <version>${spring.version}</version>
   53.  
       </dependency>
   54.  
       <dependency>
   55.  
       <groupId>org.springframework</groupId>
   56.  
       <artifactId>spring-jdbc</artifactId>
   57.  
       <version>${spring.version}</version>
   58.  
       </dependency>
   59.  
       <dependency>
   60.  
       <groupId>org.springframework</groupId>
   61.  
       <artifactId>spring-web</artifactId>
   62.  
       <version>${spring.version}</version>
   63.  
       </dependency>
   64.  
       <dependency>
   65.  
       <groupId>org.springframework</groupId>
   66.  
       <artifactId>spring-webmvc</artifactId>
   67.  
       <version>${spring.version}</version>
   68.  
       </dependency>
   69.  
       <dependency>
   70.  
       <groupId>org.springframework</groupId>
   71.  
       <artifactId>spring-aop</artifactId>
   72.  
       <version>${spring.version}</version>
   73.  
       </dependency>
   74.  
       <dependency>
   75.  
       <groupId>org.springframework</groupId>
   76.  
       <artifactId>spring-tx</artifactId>
   77.  
       <version>${spring.version}</version>
   78.  
       </dependency>
   79.  
       <dependency>
   80.  
       <groupId>org.springframework</groupId>
   81.  
       <artifactId>spring-orm</artifactId>
   82.  
       <version>${spring.version}</version>
   83.  
       </dependency>
   84.  
       <dependency>
   85.  
       <groupId>org.springframework</groupId>
   86.  
       <artifactId>spring-context-support</artifactId>
   87.  
       <version>${spring.version}</version>
   88.  
       </dependency>
   89.  
       <dependency>
   90.  
       <groupId>org.springframework</groupId>
   91.  
       <artifactId>spring-test</artifactId>
   92.  
       <version>${spring.version}</version>
   93.  
       </dependency>
   94.  
       <dependency>
   95.  
       <groupId>org.springframework</groupId>
   96.  
       <artifactId>spring-jms</artifactId>
   97.  
       <version>${spring.version}</version>
   98.  
       </dependency>
   99.  
       <dependency>
   100.  
        <groupId>org.aspectj</groupId>
   101.  
        <artifactId>aspectjrt</artifactId>
   102.  
        <version>1.6.11</version>
   103.  
        </dependency>
   104.  
        <dependency>
   105.  
        <groupId>org.aspectj</groupId>
   106.  
        <artifactId>aspectjweaver</artifactId>
   107.  
        <version>1.6.11</version>
   108.  
        </dependency>
   109.  
        </dependencies>
   110.  
         
   111.  
        <modules>
   112.  
        <module>dubbo_api</module>
   113.  
        <module>dubbo_consumer</module>
   114.  
        <module>dubbo_provider</module>
   115.  
        </modules>
   116.  
        </project>
3. 在刚才创建的dubbo_demo下创建一个新的Module:dubbo_api（服务接口）
4. dubbo_api的pom.xml文件如下：
   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.  
      <parent>
   6.  
      <artifactId>dubbo_demo</artifactId>
   7.  
      <groupId>com.dubbo</groupId>
   8.  
      <version>1.0-SNAPSHOT</version>
   9.  
      </parent>
   10.  
        
   11.  
       <modelVersion>4.0.0</modelVersion>
   12.  
        
   13.  
       <artifactId>dubbo_api</artifactId>
   14.  
        
   15.  
       <packaging>jar</packaging>
   16.  
        
   17.  
       </project>
5. 重复3、4步骤，创建dubbo_provider（服务生产者）,对应的pom.xml文件：
   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.  
      <parent>
   6.  
      <artifactId>dubbo_demo</artifactId>
   7.  
      <groupId>com.dubbo</groupId>
   8.  
      <version>1.0-SNAPSHOT</version>
   9.  
      </parent>
   10.  
       <modelVersion>4.0.0</modelVersion>
   11.  
        
   12.  
       <artifactId>dubbo_provider</artifactId>
   13.  
        
   14.  
       <dependencies>
   15.  
       <dependency>
   16.  
       <groupId>com.dubbo</groupId>
   17.  
       <artifactId>dubbo_api</artifactId>
   18.  
       <version>1.0-SNAPSHOT</version>
   19.  
       <scope>compile</scope>
   20.  
       </dependency>
   21.  
       </dependencies>
   22.  
        
   23.  
       </project>
6. 再重复3、4步骤，创建dubbo_consumer（服务消费者），对应pom.xml文件如下：
   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.  
      <parent>
   6.  
      <artifactId>dubbo_demo</artifactId>
   7.  
      <groupId>com.dubbo</groupId>
   8.  
      <version>1.0-SNAPSHOT</version>
   9.  
      </parent>
   10.  
       <modelVersion>4.0.0</modelVersion>
   11.  
        
   12.  
       <artifactId>dubbo_consumer</artifactId>
   13.  
        
   14.  
       <dependencies>
   15.  
       <dependency>
   16.  
       <groupId>com.dubbo</groupId>
   17.  
       <artifactId>dubbo_api</artifactId>
   18.  
       <version>1.0-SNAPSHOT</version>
   19.  
       <scope>compile</scope>
   20.  
       </dependency>
   21.  
       </dependencies>
   22.  
        
   23.  
       </project>
7. 最后项目结构如下：
   
8. 框架搭建起来之后，开始写代码和配置文件，首先是dubbo_api：需要定义服务接口：
   1.  
      package com.api.service;
   2.  
       
   3.  
      /**
   4.  
      * 定义服务接口
   5.  
      */
   6.  
      public interface DemoService {
   7.  
      String sayHello(String name);
   8.  
      }
9. 然后再dubbo_provider中实现上述接口（由于在pom.xml文件中，将dubbo_api作为依赖，故能引入上述接口）：
   1.  
      package com.provider.service;
   2.  
       
   3.  
      import com.api.service.DemoService;
   4.  
       
   5.  
      public class DemoServiceImpl implements DemoService {
   6.  
      public String sayHello(String name) {
   7.  
      return "Hello "+name;
   8.  
      }
   9.  
      }
10. dubbo_provider项目中的resource文件包含dubbo-provider.xml和springmvc.xml配置文件，其中dubbo-provider.xml如下：
    1.  
       <?xml version="1.0" encoding="UTF-8"?>
    2.  
       <beans xmlns="http://www.springframework.org/schema/beans"
    3.  
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    4.  
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    5.  
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    6.  
       http://www.springframework.org/schema/beans/spring-beans.xsd
    7.  
       http://code.alibabatech.com/schema/dubbo
    8.  
       http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    9.  
        
    10.  
        <!-- 提供方应用信息，用于计算依赖关系 -->
    11.  
        <dubbo:application name="dubbo_provider" />
    12.  
         
    13.  
        <!-- 使用zookeeper注册中心暴露服务地址 -->
    14.  
        <dubbo:registry address="zookeeper://127.0.0.1:2181" />
    15.  
         
    16.  
        <!-- 用dubbo协议在20880端口暴露服务 -->
    17.  
        <dubbo:protocol name="dubbo" port="20880" />
    18.  
         
    19.  
        <!-- 声明需要暴露的服务接口 -->
    20.  
        <dubbo:service interface="com.api.service.DemoService" ref="demoService" />
    21.  
         
    22.  
        <!-- 接口实现类-->
    23.  
        <bean id="demoService" class="com.provider.service.DemoServiceImpl"/>
    24.  
         
    25.  
        </beans>
    26.  
         
    springmvc.xml如下：
    1.  
       <?xml version="1.0" encoding="UTF-8"?>
    2.  
       <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop"
    3.  
       xmlns:context="http://www.springframework.org/schema/context"
    4.  
       xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    5.  
       xsi:schemaLocation="http://www.springframework.org/schema/aop
    6.  
       http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    7.  
       http://www.springframework.org/schema/beans
    8.  
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    9.  
       http://www.springframework.org/schema/context
    10.  
        http://www.springframework.org/schema/context/spring-context-4.0.xsd
    11.  
        http://www.springframework.org/schema/util
    12.  
        http://www.springframework.org/schema/util/spring-util-4.0.xsd"
    13.  
        default-autowire="byName">
    14.  
         
    15.  
        <aop:aspectj-autoproxy />
    16.  
        <context:component-scan base-package="com" />
    17.  
        <import resource="classpath:dubbo-provider.xml" />
    18.  
        </beans>
    再在该工程下写一个测试类，后面测试用到：
    1.  
       package com.provider.test;
    2.  
        
    3.  
       import org.springframework.context.support.ClassPathXmlApplicationContext;
    4.  
        
    5.  
       import java.io.IOException;
    6.  
        
    7.  
       public class ProviderTest {
    8.  
       public static void main(String[] args) {
    9.  
       ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath:springmvc.xml");
    10.  
        context.start();
    11.  
         
    12.  
        System.out.println("Dubbo provider start...");
    13.  
         
    14.  
        try {
    15.  
        System.in.read(); // 按任意键退出
    16.  
        } catch (IOException e) {
    17.  
        e.printStackTrace();
    18.  
        }
    19.  
        }
    20.  
        }
11. 接下来开始写消费者——dubbo_consumer的代码和配置文件：resource中的dubbo-consumer.xml:
    1.  
       <?xml version="1.0" encoding="UTF-8"?>
    2.  
       <beans xmlns="http://www.springframework.org/schema/beans"
    3.  
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    4.  
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    5.  
       http://www.springframework.org/schema/beans/spring-beans.xsd
    6.  
       http://code.alibabatech.com/schema/dubbo
    7.  
       http://code.alibabatech.com/schema/dubbo/dubbo.xsd ">
    8.  
       <!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
    9.  
       <dubbo:application name="dubbo_consumer" />
    10.  
        <!-- 使用multicast广播注册中心暴露发现服务地址 -->
    11.  
        <dubbo:registry protocol="zookeeper" address="zookeeper://127.0.0.1:2181" />
    12.  
        <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
    13.  
        <dubbo:reference id="demoService" interface="com.api.service.DemoService" />
    14.  
        </beans>
    springmvc.xml:
    1.  
       <?xml version="1.0" encoding="UTF-8"?>
    2.  
       <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop"
    3.  
       xmlns:context="http://www.springframework.org/schema/context"
    4.  
       xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    5.  
       xsi:schemaLocation="http://www.springframework.org/schema/aop
    6.  
       http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    7.  
       http://www.springframework.org/schema/beans
    8.  
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    9.  
       http://www.springframework.org/schema/context
    10.  
        http://www.springframework.org/schema/context/spring-context-4.0.xsd
    11.  
        http://www.springframework.org/schema/util
    12.  
        http://www.springframework.org/schema/util/spring-util-4.0.xsd"
    13.  
        default-autowire="byName">
    14.  
         
    15.  
        <aop:aspectj-autoproxy />
    16.  
        <context:component-scan base-package="com" />
    17.  
        <import resource="classpath:/dubbo-consumer.xml" />
    18.  
        </beans>
12. 然后写消费者的测试
    1.  
       package com.consumer;
    2.  
        
    3.  
       import com.api.service.DemoService;
    4.  
       import org.springframework.context.support.ClassPathXmlApplicationContext;
    5.  
        
    6.  
       import java.io.IOException;
    7.  
        
    8.  
       public class ConsumerTest {
    9.  
       public static void main(String[] args) {
    10.  
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "classpath:springmvc.xml" });
    11.  
         
    12.  
        context.start();
    13.  
        DemoService demoService = (DemoService) context.getBean("demoService");
    14.  
         
    15.  
        System.out.println(demoService.sayHello("哈哈哈"));
    16.  
        try {
    17.  
        System.in.read();
    18.  
        } catch (IOException e) {
    19.  
        e.printStackTrace();
    20.  
        }
    21.  
        }
    22.  
        }
13. 到现在整个代码就开发完成了，按照先后顺序，首先启动Zookeeper：zkServer.cmd      然后启动服务生产者测试类，最后启动服务消费者的测试类，当控制台输出以下结果，则代表成功。
    服务生产者测试类控制台输出：
    服务消费者测试了控制台输出：