Dubbo入门教程

桃扇骨 2024-04-18 09:49 175阅读 0赞

服务端（dubbo-server）

1. pom.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <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">
  3.     <modelVersion>4.0.0</modelVersion>
  5.     <groupId>com.lwb</groupId>
  6.     <artifactId>dubbo-server</artifactId>
  7.     <version>1.0-SNAPSHOT</version>
  8.     <packaging>jar</packaging>
  10.     <properties>
  11.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  12.     </properties>
  14.     <dependencies>
  15.         <!-- spring begin -->
  16.         <dependency>
  17.             <groupId>org.springframework</groupId>
  18.             <artifactId>spring-context</artifactId>
  19.             <version>4.1.6.RELEASE</version>
  20.         </dependency>
  21.         <!-- spring end -->
  22.         <!-- dubbo begin -->
  23.         <dependency>
  24.             <groupId>com.alibaba</groupId>
  25.             <artifactId>dubbo</artifactId>
  26.             <version>2.5.3</version>
  27.         </dependency>
  28.         <!-- dubbo end -->
  29.         <!-- 注册中心zookeeper begin -->
  30.         <dependency>
  31.             <groupId>org.apache.zookeeper</groupId>
  32.             <artifactId>zookeeper</artifactId>
  33.             <version>3.3.6</version>
  34.         </dependency>
  35.         <!-- 注册中心zookeeper end -->
  36.         <!-- log begin -->
  37.         <dependency>
  38.             <groupId>commons-logging</groupId>
  39.             <artifactId>commons-logging</artifactId>
  40.             <version>1.1.1</version>
  41.         </dependency>
  42.         <dependency>
  43.             <groupId>log4j</groupId>
  44.             <artifactId>log4j</artifactId>
  45.             <version>1.2.15</version>
  46.             <exclusions>
  47.                 <exclusion>
  48.                     <groupId>com.sun.jdmk</groupId>
  49.                     <artifactId>jmxtools</artifactId>
  50.                 </exclusion>
  51.                 <exclusion>
  52.                     <groupId>com.sun.jmx</groupId>
  53.                     <artifactId>jmxri</artifactId>
  54.                 </exclusion>
  55.                 <exclusion>
  56.                     <artifactId>jms</artifactId>
  57.                     <groupId>javax.jms</groupId>
  58.                 </exclusion>
  59.                 <exclusion>
  60.                     <artifactId>mail</artifactId>
  61.                     <groupId>javax.mail</groupId>
  62.                 </exclusion>
  63.             </exclusions>
  64.         </dependency>
  65.         <!-- log end -->
  66.         <!-- other begin -->
  67.         <dependency>
  68.             <groupId>org.jboss.netty</groupId>
  69.             <artifactId>netty</artifactId>
  70.             <version>3.2.0.Final</version>
  71.         </dependency>
  72.         <dependency>
  73.             <groupId>com.101tec</groupId>
  74.             <artifactId>zkclient</artifactId>
  75.             <version>0.8</version>
  76.         </dependency>
  77.         <!-- other end -->
  78.     </dependencies>
  79. </project>

2. dubbo.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
  4.     <dubbo:application name="dubbo-server" owner="lwb" />
  5.     <!-- zookeeper注册中心 -->
  6.     <dubbo:registry address="zookeeper://127.0.0.1:2181" />
  7.     <dubbo:protocol contextpath="dubbo" port="20881" />
  8.     <dubbo:monitor protocol="registry"/>
  10.     <!-- 服务具体实现 -->
  11.     <bean id="elasticService" class="com.lwb.service.impl.ElasticServiceImpl" />
  13.     <!-- 向注册中心注册暴漏服务地址,注册服务 -->
  14.     <dubbo:service interface="com.lwb.service.ElasticService" ref="elasticService" protocol="dubbo" timeout="50000"/>

3. 代码

  1. package com.lwb.service;
  3. /** * @author liuweibo * @date 2018/5/9 */
  4. public interface ElasticService { 
  6.     String helloDubbo(String msg);
  7. }
  9. package com.lwb.service.impl;
  11. import com.lwb.service.ElasticService;
  12. import org.slf4j.Logger;
  13. import org.slf4j.LoggerFactory;
  14. import org.springframework.stereotype.Service;
  16. /** * @author liuweibo * @date 2018/5/9 */
  17. public class ElasticServiceImpl implements ElasticService { 
  19.     private static final Logger LOGGER = LoggerFactory.getLogger(ElasticServiceImpl.class);
  21.     public String helloDubbo(String msg) { 
  22.         System.out.println(msg);
  23.         return "hi!" + msg;
  24.     }
  25. }

4. 项目结构

在这里插入图片描述

5. 启动类（Application.java）

这里就直接用main方法启动了

  1. package com.lwb;
  3. import org.springframework.context.support.ClassPathXmlApplicationContext;
  5. import java.io.IOException;
  7. /** * @author liuweibo * @date 2018/5/9 */
  8. public class Application { 
  9.     public static void main(String[] args) throws IOException { 
  11.         ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] {  "dubbo.xml" });
  12.         context.start();
  13.         System.out.println("任意按键退出");
  14.         System.in.read();
  15.         context.close();
  16.     }
  17. }

客户端（dubbo-client）

1. pom.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <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">
  3.     <modelVersion>4.0.0</modelVersion>
  5.     <groupId>com.lwb</groupId>
  6.     <artifactId>dubbo-client</artifactId>
  7.     <version>1.0-SNAPSHOT</version>
  8.     <properties>
  9.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  10.     </properties>
  12.     <dependencies>
  13.         <!-- spring begin -->
  14.         <dependency>
  15.             <groupId>org.springframework</groupId>
  16.             <artifactId>spring-context</artifactId>
  17.             <version>4.1.6.RELEASE</version>
  18.         </dependency>
  19.         <!-- spring end -->
  21.         <!-- dubbo begin -->
  22.         <dependency>
  23.             <groupId>com.alibaba</groupId>
  24.             <artifactId>dubbo</artifactId>
  25.             <version>2.5.3</version>
  26.         </dependency>
  27.         <!-- dubbo end -->
  29.         <!-- 注册中心zookeeper begin -->
  30.         <dependency>
  31.             <groupId>org.apache.zookeeper</groupId>
  32.             <artifactId>zookeeper</artifactId>
  33.             <version>3.3.6</version>
  34.         </dependency>
  35.         <!-- 注册中心zookeeper end -->
  37.         <!-- log begin -->
  38.         <dependency>
  39.             <groupId>log4j</groupId>
  40.             <artifactId>log4j</artifactId>
  41.             <version>1.2.15</version>
  42.             <exclusions>
  43.                 <exclusion>
  44.                     <groupId>com.sun.jdmk</groupId>
  45.                     <artifactId>jmxtools</artifactId>
  46.                 </exclusion>
  47.                 <exclusion>
  48.                     <groupId>com.sun.jmx</groupId>
  49.                     <artifactId>jmxri</artifactId>
  50.                 </exclusion>
  51.                 <exclusion>
  52.                     <artifactId>jms</artifactId>
  53.                     <groupId>javax.jms</groupId>
  54.                 </exclusion>
  55.                 <exclusion>
  56.                     <artifactId>mail</artifactId>
  57.                     <groupId>javax.mail</groupId>
  58.                 </exclusion>
  59.             </exclusions>
  60.         </dependency>
  61.         <!-- log end -->
  63.         <!-- other begin -->
  64.         <dependency>
  65.             <groupId>com.101tec</groupId>
  66.             <artifactId>zkclient</artifactId>
  67.             <version>0.8</version>
  68.         </dependency>
  69.         <dependency>
  70.             <groupId>com.lwb</groupId>
  71.             <artifactId>dubbo-server</artifactId>
  72.             <version>1.0-SNAPSHOT</version>
  73.         </dependency>
  74.         <!-- other end -->
  75.     </dependencies>
  77. </project>

2. dubbo.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
  4.     <dubbo:application name="consumer-of-dubbo-demo" />
  6.     <dubbo:registry address="zookeeper://127.0.0.1:2181" />
  8.     <!-- 向注册中心订阅服务 -->
  9.     <dubbo:reference id="elasticService" interface="com.lwb.service.ElasticService" />
  11. </beans>

3. 服务调用（这里为了简单，就在main方法里面处理了哈，Application.java）

  1. package com.lwb;
  3. import com.lwb.service.ElasticService;
  4. import com.lwb.service.impl.ElasticServiceImpl;
  5. import org.springframework.context.support.ClassPathXmlApplicationContext;
  7. /** * @author liuweibo * @date 2018/5/9 */
  8. public class Application { 
  10.     public static void main(String[] args) { 
  11.         ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
  12.                 new String[] {  "dubbo.xml" });
  13.         context.start();
  14.         ElasticService service = (ElasticService) context.getBean("elasticService");
  15.         System.out.println(service.helloDubbo("world"));
  16.         context.close();
  17.     }
  18. }

4. 项目结构

在这里插入图片描述

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