dubbo简单示例

Posted 2021-01-07

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1. 代码结构

2.创建test-dubbo-api

　　创建服务接口类qinfeng.zheng.service.DemoApiService

package qinfeng.zheng.service;

public interface DemoApiService {
    String getUser(Long userId);
}

　　pom.xml

　<?xml version="1.0" encoding="UTF-8"?>
　　<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">
　　　　<parent>
　　　　　　<artifactId>dubbo</artifactId>
　　　　　　<groupId>qinfeng.zheng</groupId>
　　　　　　<version>1.0-SNAPSHOT</version>
　　　　</parent>
　　　　<modelVersion>4.0.0</modelVersion>
　　　　<artifactId>test-dubbo-api</artifactId>
　　</project>

3. 创建test-dubbo-provider

　　pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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">
<parent>
<artifactId>dubbo</artifactId>
<groupId>qinfeng.zheng</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>

<artifactId>test-dubbo-provider</artifactId>
<dependencies>
<dependency>
<groupId>qinfeng.zheng</groupId>
<artifactId>test-dubbo-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>

<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.jboss.netty</groupId>
<artifactId>netty</artifactId>
<version>3.2.5.Final</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.9.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>org.jboss.netty</groupId>
<artifactId>netty</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>

</project>　　

　　创建dubbo-provider.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" 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">
    <!--定义了提供方应用信息，用于计算依赖关系；在 dubbo-admin 或 dubbo-monitor 会显示这个名字，方便辨识 -->
    <dubbo:application name="test-provider" />
    <!--使用 zookeeper 注册中心暴露服务，注意要先开启 zookeeper -->
    <dubbo:registry address="zookeeper://192.168.96.100:2181" />
    <!-- 用dubbo协议在20880端口暴露服务 -->
    <dubbo:protocol name="dubbo" port="20880" />
    <!--具体实现该接口的 bean -->
    <bean id="demoService" class="qinfeng.zheng.service.impl.DemoApiServiceImpl" />
    <!--使用 dubbo 协议实现定义好的 api.PermissionService 接口 -->
    <dubbo:service interface="qinfeng.zheng.service.DemoApiService" ref="demoService" protocol="dubbo" />
</beans>

　　创建qinfeng.zheng.service.impl.DemoApiServiceImpl

package qinfeng.zheng.service.impl;

import qinfeng.zheng.service.DemoApiService;

public class DemoApiServiceImpl implements DemoApiService {
    public String getUser(Long userId) {
      System.out.println("生产者调用消费者服务接口userId:" + userId);
      return "哈哈,关你啥事...";
   }
}

　　创建服务启动类qinfeng.zheng.ProviderApp

package qinfeng.zheng;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

/**
 * 创建时间: 21:57 2018/9/18
 * 修改时间:
 * 编码人员: ZhengQf
 * 版   本: 0.0.1
 * 功能描述:
 */
public class ProviderApp {
    public static void main(String[] args) throws IOException {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("dubbo-provider.xml");
        System.out.println(context.getDisplayName() + ": here");
        context.start();
        System.out.println("服务已经启动...");
        System.in.read();  //保持服务一直在运行
    }
}

4. 创建test-dubbo-consumer

　　pom.xml

　　<?xml version="1.0" encoding="UTF-8"?>
<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">
<parent>
<artifactId>dubbo</artifactId>
<groupId>qinfeng.zheng</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>

<artifactId>test-dubbo-consumer</artifactId>

<dependencies>
<dependency>
<groupId>qinfeng.zheng</groupId>
<artifactId>test-dubbo-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.jboss.netty</groupId>
<artifactId>netty</artifactId>
<version>3.2.5.Final</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.9.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>org.jboss.netty</groupId>
<artifactId>netty</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</project>

　　创建配置文件dubbo-consumer.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" 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
        ">

    <!-- 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 -->
    <dubbo:application name="test-consumer" />

    <!--zk集群配置方式-->
    <!--<dubbo:registry address="zookeeper://192.168.96.100:2181?backup=192.168.96.130:2181,192.168.96.131:2181" />-->
    <dubbo:registry address="zookeeper://192.168.96.100:2181" />

    <dubbo:reference id="demoApiService" interface="qinfeng.zheng.service.DemoApiService" />

</beans>

　　创建消费方启动类ConsumerApp

import org.springframework.context.support.ClassPathXmlApplicationContext;
import qinfeng.zheng.service.DemoApiService;

/**
 * 创建时间: 22:16 2018/9/18
 * 修改时间:
 * 编码人员: ZhengQf
 * 版   本: 0.0.1
 * 功能描述:
 */
public class ConsumerApp {
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("dubbo-consumer.xml");
        context.start();
        DemoApiService demoApiService = (DemoApiService) context.getBean("demoApiService");
        String ret = demoApiService.getUser(1l);
        System.out.println(ret);
        System.in.read();
    }
}

5. 启动zookeeper注册中心

　启动prodiver,consumer两个服务

　服务调用成功!!!

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