zookeeper+Dubbo环境搭建及简单Demo

1 安装zk https://www.cnblogs.com/feifeicui/p/11175502.html

2 安装 dubbo-admin https://www.cnblogs.com/feifeicui/p/11175859.html

3 创建maven项目

项目结构：

pomxml

<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/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>DubboDemo</groupId>

  <artifactId>DubboDemo</artifactId>

  <packaging>pom</packaging>

  <version>1.0-SNAPSHOT</version>

  <modules>

    <module>dubbo-api</module>

    <module>dubbo-provider</module>

    <module>dubbo-consumer</module>

    <module>dubbo-consumer2</module>

  </modules>

  <name>DubboDemo Maven Webapp</name>

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

  <properties>

    <maven.compiler.source>1.8</maven.compiler.source>

    <maven.compiler.target>1.8</maven.compiler.target>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

    <!-- spring版本号 -->

    <spring.version>4.2.5.RELEASE</spring.version>

    <!-- mybatis版本号 -->

    <mybatis.version>3.2.8</mybatis.version>

    <!-- mysql驱动版本号 -->

    <mysql-driver.version>5.1.29</mysql-driver.version>

    <!-- log4j日志包版本号 -->

    <slf4j.version>1.7.18</slf4j.version>

    <log4j.version>1.2.17</log4j.version>

  </properties>

  <dependencies>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>3.8.1</version>

      <scope>test</scope>

    </dependency>

    <!-- 添加jstl依赖 -->

    <dependency>

      <groupId>jstl</groupId>

      <artifactId>jstl</artifactId>

      <version>1.2</version>

    </dependency>

    <dependency>

      <groupId>javax</groupId>

      <artifactId>javaee-api</artifactId>

      <version>7.0</version>

    </dependency>

    <!-- 添加junit4依赖 -->

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>4.11</version>

      <!-- 指定范围，在测试时才会加载 -->

      <scope>test</scope>

    </dependency>

    <!-- 添加spring核心依赖 -->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-core</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-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-webmvc</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-aop</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-test</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <!-- 添加mybatis依赖 -->

    <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis</artifactId>

      <version>${mybatis.version}</version>

    </dependency>

    <!-- 添加mybatis/spring整合包依赖 -->

    <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis-spring</artifactId>

      <version>1.2.2</version>

    </dependency>

    <!-- 添加mysql驱动依赖 -->

    <dependency>

      <groupId>mysql</groupId>

      <artifactId>mysql-connector-java</artifactId>

      <version>${mysql-driver.version}</version>

    </dependency>

    <!-- 添加数据库连接池依赖 -->

    <dependency>

      <groupId>commons-dbcp</groupId>

      <artifactId>commons-dbcp</artifactId>

      <version>1.2.2</version>

    </dependency>

    <!-- 添加fastjson -->

    <dependency>

      <groupId>com.alibaba</groupId>

      <artifactId>fastjson</artifactId>

      <version>1.2.22</version>

    </dependency>

    <!-- 添加日志相关jar包 -->

    <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 -->

    <!-- 映入JSON -->

    <dependency>

      <groupId>org.codehaus.jackson</groupId>

      <artifactId>jackson-mapper-asl</artifactId>

      <version>1.9.13</version>

    </dependency>

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->

    <dependency>

      <groupId>com.fasterxml.jackson.core</groupId>

      <artifactId>jackson-core</artifactId>

      <version>2.8.0</version>

    </dependency>

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->

    <dependency>

      <groupId>com.fasterxml.jackson.core</groupId>

      <artifactId>jackson-databind</artifactId>

      <version>2.8.0</version>

    </dependency>

    <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>1.9</version>

    </dependency>

    <dependency>

      <groupId>org.quartz-scheduler</groupId>

      <artifactId>quartz</artifactId>

      <version>2.2.1</version>

    </dependency>

    <dependency>

      <groupId>org.apache.shiro</groupId>

      <artifactId>shiro-core</artifactId>

      <version>1.3.2</version>

    </dependency>

    <dependency>

      <groupId>org.apache.shiro</groupId>

      <artifactId>shiro-web</artifactId>

      <version>1.3.2</version>

    </dependency>

    <dependency>

      <groupId>org.apache.shiro</groupId>

      <artifactId>shiro-spring</artifactId>

      <version>1.3.2</version>

    </dependency>

    <dependency>

      <groupId>org.apache.shiro</groupId>

      <artifactId>shiro-ehcache</artifactId>

      <version>1.3.2</version>

    </dependency>

    <dependency>

      <groupId>org.apache.zookeeper</groupId>

      <artifactId>zookeeper</artifactId>

      <version>3.4.9</version>

    </dependency>

    <!-- dubbo -->

    <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.101tec</groupId>

      <artifactId>zkclient</artifactId>

      <version>0.10</version>

    </dependency>

  </dependencies>

  <build>

    <finalName>DubboDemo</finalName>

  </build>

</project>

dubbo-api

<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/maven-v4_0_0.xsd">

    <parent>

        <artifactId>DubboDemo</artifactId>

        <groupId>DubboDemo</groupId>

        <version>1.0-SNAPSHOT</version>

    </parent>

    <modelVersion>4.0.0</modelVersion>

    <artifactId>dubbo-api</artifactId>

    <packaging>war</packaging>

    <name>dubbo-api Maven Webapp</name>

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

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>3.8.1</version>

            <scope>test</scope>

        </dependency>

    </dependencies>

    <build>

        <finalName>dubbo-api</finalName>

    </build>

</project>

package com.alibaba.dubbo.demo;

import java.util.List;

/**

 * Created by wy on 2017/4/13.

 */

public interface DemoService {

    List<String> getPermissions(Long id);

}

dubbo-provider

<?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>DubboDemo</artifactId>

        <groupId>DubboDemo</groupId>

        <version>1.0-SNAPSHOT</version>

    </parent>

    <modelVersion>4.0.0</modelVersion>

    <artifactId>dubbo-provider</artifactId>

    <dependencies>

        <dependency>

            <groupId>DubboDemo</groupId>

            <artifactId>dubbo-api</artifactId>

            <version>1.0-SNAPSHOT</version>

        </dependency>

    </dependencies>

</project>

package com.alibaba.dubbo.demo.impl;

import com.alibaba.dubbo.demo.DemoService;

import java.util.ArrayList;

import java.util.List;

public class DemoServiceImpl implements DemoService {

    public List<String> getPermissions(Long id) {

        List<String> demo = new ArrayList<String>();

        demo.add(String.format("Permission_%d", id - 1));

        demo.add(String.format("Permission_%d", id));

        demo.add(String.format("Permission_%d", id + 1));

        return demo;

    }

}

package com.alibaba.dubbo.demo.impl;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

/**

 * Created by wy on 2017/4/13.

 */

public class Provider {

        public static void main(String[] args) throws IOException {

            ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("provider.xml");

            System.out.println(context.getDisplayName() + ": here");

            context.start();

            System.out.println("服务已经启动...");

            System.in.read();

        }

    }

log4j.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">

    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern" value="[%d{dd/MM/yy hh:mm:ss:sss z}] %t %5p %c{2}: %m%n" />

        </layout>

    </appender>

    <root>

        <level value="INFO" />

        <appender-ref ref="CONSOLE" />

    </root>

</log4j:configuration>

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="demotest-provider" owner="programmer" organization="dubbox"/>

    <!--使用 zookeeper 注册中心暴露服务，注意要先开启 zookeeper-->

    <dubbo:registry address="zookeeper://localhost:2181"/>

    <!-- 用dubbo协议在20880端口暴露服务 -->

    <dubbo:protocol name="dubbo" port="20880" />

    <!--使用 dubbo 协议实现定义好的 api.PermissionService 接口-->

    <dubbo:service interface="com.alibaba.dubbo.demo.DemoService" ref="demoService" protocol="dubbo" />

    <!--具体实现该接口的 bean-->

    <bean id="demoService" class="com.alibaba.dubbo.demo.impl.DemoServiceImpl"/>

</beans>

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>DubboDemo</artifactId>

        <groupId>DubboDemo</groupId>

        <version>1.0-SNAPSHOT</version>

    </parent>

    <modelVersion>4.0.0</modelVersion>

    <artifactId>dubbo-consumer</artifactId>

    <dependencies>

        <dependency>

            <groupId>DubboDemo</groupId>

            <artifactId>dubbo-api</artifactId>

            <version>1.0-SNAPSHOT</version>

        </dependency>

    </dependencies>

</project>

package com.alibaba.dubbo.consumer;

import com.alibaba.dubbo.demo.DemoService;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Consumer {

    public static void main(String[] args) {

        //测试常规服务

        ClassPathXmlApplicationContext context =

                new ClassPathXmlApplicationContext("consumer.xml");

        context.start();

        System.out.println("consumer start");

        DemoService demoService = context.getBean(DemoService.class);

        System.out.println("consumer");

        System.out.println(demoService.getPermissions(1L));

    }

}

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">

    <dubbo:application name="demotest-consumer" owner="programmer" organization="dubbox"/>

    <!--向 zookeeper 订阅 provider 的地址，由 zookeeper 定时推送-->

    <dubbo:registry address="zookeeper://localhost:2181"/>

    <!--使用 dubbo 协议调用定义好的 api.PermissionService 接口-->

    <dubbo:reference id="permissionService" interface="com.alibaba.dubbo.demo.DemoService"/>

</beans>

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">

    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern" value="[%d{dd/MM/yy hh:mm:ss:sss z}] %t %5p %c{2}: %m%n" />

        </layout>

    </appender>

    <root>

        <level value="INFO" />

        <appender-ref ref="CONSOLE" />

    </root>

</log4j:configuration>

dubbo-consumer2

package com.alibaba.dubbo.consumer;

import com.alibaba.dubbo.demo.DemoService;

import org.springframework.context.support.ClassPathXmlApplicationContext;

/**

 * Created by wy on 2017/4/13.

 */

public class Consumer {

    public static void main(String[] args) {

        //测试常规服务

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");

        context.start();

        System.out.println("consumer2 start");

        DemoService demoService = context.getBean(DemoService.class);

        System.out.println("consumer2");

        System.out.println(demoService.getPermissions(1L));

    }

}

<?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">

    <dubbo:application name="demotest-consumer" owner="programmer" organization="dubbox"/>

    <!--向 zookeeper 订阅 provider 的地址，由 zookeeper 定时推送-->

    <dubbo:registry address="zookeeper://localhost:2181"/>

    <!--使用 dubbo 协议调用定义好的 api.PermissionService 接口-->

    <dubbo:reference id="permissionService" interface="com.alibaba.dubbo.demo.DemoService"/>

</beans>

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">

    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern" value="[%d{dd/MM/yy hh:mm:ss:sss z}] %t %5p %c{2}: %m%n" />

        </layout>

    </appender>

    <root>

        <level value="INFO" />

        <appender-ref ref="CONSOLE" />

    </root>

</log4j:configuration>

启动Provider.java

启动两个消费者Consumer.java

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