dubbo_zookeeper简单实例

最新推荐文章于 2018-05-15 19:21:55 发布

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本文详细介绍如何通过Spring集成Dubbo框架，实现服务的发布与消费。包括搭建Zookeeper注册中心，配置服务发布端与消费端，以及具体的接口定义与实现。

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1、结合Spring分别创建发送端和接收端 zookeeper 自己安装并开启

2、导入需要的jar包利用maven

<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>com.qn</groupId>
  <artifactId>ConvergentEngineering</artifactId>
  <version>1.0-SNAPSHOT</version>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <modules>
    <module>duboo_api</module>
    <module>duboo_provider</module>
    <module>duboo_consumer</module>
  </modules>
  <packaging>pom</packaging>

  <name>ConvergentEngineering</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <spring.version>3.2.8.RELEASE</spring.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.5.3</version>
      <exclusions>
        <exclusion>
          <groupId>org.springframework</groupId>
          <artifactId>spring</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>com.github.sgroschupf</groupId>
      <artifactId>zkclient</artifactId>
      <version>0.1</version>
    </dependency>
    <!-- spring相关 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${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-aop</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-orm</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-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>${spring.version}</version>
    </dependency>
  </dependencies>
</project>

2、在发送端配置的applicationContext.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
        ">

    <!--具体实现bean-->
    <bean id="userService" class="com.qn.service.imple.UserServiceImple"/>
    <!--提供方应用信息，用于计算依赖关系-->
    <dubbo:application name="xs_provider"/>
    <!--使用zookeeper注册中心暴露服务地址-->
    <dubbo:registry address="zookeeper://localhost:2181"/>
    <!--用duboo在协议20880端口暴露服务-->
    <dubbo:protocol name="dubbo" port="20880"/>
    <!--声明需要暴露的服务接口-->
    <dubbo:service interface="com.qn.service.UserService" ref="userService"/>
</beans>

3、编写需要暴露的service接口

package com.qn.service;

/**
 * Created by Administrator on 2017/11/6 0006.
 */
public interface UserService {
    public String getUserName(String name);
}

4、service 的实现类

package com.qn.service.imple;

import com.qn.service.UserService;

/**
 * Created by Administrator on 2017/11/6 0006.
 */
public class UserServiceImple implements UserService {
    @Override
    public String getUserName(String name) {
        return name;
    }
}

5、将发布端启动（也可以发布到Tomcat中）

package com.qn.controller;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

/**
 * Created by Administrator on 2017/11/6 0006.
 */
public class UserMain {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        context.start();
        System.out.println("启动");
//        为了服务一直开着，利用输入流来阻塞模拟
        try {
            System.in.read();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

6、编写消费方，jar和发送端一样

接收端的applicationContext.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">

    <!--消费方的应用名，不要与提供方一样-->
    <dubbo:application name="hjy_consumer"/>

    <!--使用zookeeper中心暴露-->
    <dubbo:registry address="zookeeper://localhost:2181"/>

    <!--生成远程服务代理 可以像使用本地bean一样使用service-->
    <dubbo:reference id="userService" interface="com.qn.service.UserService"/>
</beans>

7、消费方的service 接口不需要从新写实现类，

package com.qn.service;

/**
 * Created by Administrator on 2017/11/6 0006.
 */
public interface UserService {
    public String getUserName(String name);
}

8、运行消费方

package com.qn.controller;

import com.qn.service.UserService;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * Created by Administrator on 2017/11/6 0006.
 */
public class UserDemo {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        context.start();
        System.out.println("启动");
        UserService userService = (UserService) context.getBean("userService");
        String name = userService.getUserName("小明");
        System.out.println(name);
    }
}