zookeeper+Dubbo環境搭建及簡單Demo

一、運作環境

本文運作環境：windows 7 + JDK1.8 + zookeeper-3.3.6 + dubbo-admin-2.5.4 （支援JDK 1.8）+ dubbo 2.5.3

所需工具可至資源頁下載下傳 --》點我下載下傳

Demo下載下傳

本文采用Dubbo與Zookeeper、Spring架構的整合。

主要是以下幾個步驟：

1. 安裝Zookeeper,啟動；

2. 建立MAVEN項目，建構Dubbo+Zookeeper+Spring實作的簡單Demo；

3. 安裝Dubbo-admin，實作監控。

二、安裝配置Zookeeper

解壓zookeeper-3.3.6.tar.gz到指定目錄下 D:\zookeeper-3.4.8 修改zoo_sample.cfg 檔案名(D:\zookeeper-3.4.8\conf) 為 zoo.cfg 配置檔案簡單解析 1、tickTime：這個時間是作為 Zookeeper 伺服器之間或用戶端與伺服器之間維持心跳的時間間隔，也就是每個 tickTime 時間就會發送一個心跳。

2、dataDir：是 Zookeeper 儲存資料的目錄，預設情況下，Zookeeper 将寫資料的日志檔案也儲存在這個目錄裡。

3、dataLogDir：是 Zookeeper 儲存日志檔案的目錄

4、clientPort：這個端口就是用戶端連接配接 Zookeeper 伺服器的端口，Zookeeper 會監聽這個端口，接受用戶端的通路請求。

在(D:\zookeeper-3.4.8\)目錄下建立/tmp/zookeeper檔案夾

啟動

進入到bin檔案夾下，在上面位址欄中輸入cmd進入指令行，輸入zkServer.cmd，若如圖顯示則代表啟動成功。

zookeeper+Dubbo環境搭建及簡單Demo

三、建立MAVEN項目

（編譯環境使用Intellij JDK版本為1.8）

項目結構：

dubbo-api : 存放公共接口；

dubbo-consumer :　調用遠端服務；

dubbo-provider : 提供遠端服務。

具體如圖所示：

zookeeper+Dubbo環境搭建及簡單Demo

1、建立MAVEN項目 DubboDemo

導入所需要的jar包依賴。

<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-consumer</module>
        <module>dubbo-provider</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驅動版本号 -->
        <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依賴 -->
        <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依賴 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <!-- 指定範圍，在測試時才會加載 -->
            <scope>test</scope>
        </dependency>

        <!-- 添加spring核心依賴 -->
        <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依賴 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>

        <!-- 添加mybatis/spring整合包依賴 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>

        <!-- 添加mysql驅動依賴 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-driver.version}</version>
        </dependency>
        <!-- 添加資料庫連接配接池依賴 -->
        <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>

        <!-- 添加日志相關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>
        <dependency>
            <groupId>DubboDemo</groupId>
            <artifactId>dubbo-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

    </dependencies>
    <build>
        <finalName>DubboDemo</finalName>
    </build>
</project>

2、在此項目下建立MAVEN項目：dubbo-api

建立接口DemoService

package com.zh.dubbo.demo;

   import java.util.List;

   public interface DemoService {
     List<String> getPermissions(Long id);
   }

（若不能建立java檔案，則在java檔案夾點選右鍵，選擇Mark Directory As -----Source Root即可

zookeeper+Dubbo環境搭建及簡單Demo

）

3、建立dubbo-provider的MAVEN項目

實作公共接口

package com.zh.dubbo.demo.impl;

import com.zh.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;
    }
}

添加Spring配置聲明檔案 Provider.xml 此檔案放在target/classes檔案夾下

<?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">
    <!--定義了提供方應用資訊，用于計算依賴關系；在 dubbo-admin 或 dubbo-monitor 會顯示這個名字，友善辨識-->
    <dubbo:application name="demotest-provider" owner="programmer" organization="dubbox"/>
    <!--使用 zookeeper 注冊中心暴露服務，注意要先開啟 zookeeper-->
    <dubbo:registry address="zookeeper://localhost:2181"/>
    <!-- 用dubbo協定在20880端口暴露服務 -->
    <dubbo:protocol name="dubbo" port="20880" />
    <!--使用 dubbo 協定實作定義好的 api.PermissionService 接口-->
    <dubbo:service inter ref="demoService" protocol="dubbo" />
    <!--具體實作該接口的 bean-->
    <bean id="demoService" class="com.zh.dubbo.demo.impl.DemoServiceImpl"/>
</beans>

添加啟動遠端服務類Provider.class：

package com.zh.dubbo.demo.impl;

import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.io.IOException;

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("服務已經啟動...");
        System.in.read();
    }
}

4、建立dubbo-consumer的MAVEN項目

添加Spring配置聲明檔案 consumer.xml 此檔案放在target/classes檔案夾下

<?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 訂閱 provider 的位址，由 zookeeper 定時推送-->
    <dubbo:registry address="zookeeper://localhost:2181"/>
    <!--使用 dubbo 協定調用定義好的 api.PermissionService 接口-->
    <dubbo:reference id="permissionService" inter/>
</beans>

建立Consumer類，啟動Consumer,調用遠端服務

package com.zh.dubbo.consumer;

import com.zh.dubbo.demo.DemoService;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Consumer {
    public static void main(String[] args) {
        //測試正常服務
        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));
    }
}

5、運作項目，先確定provider已被運作後再啟動consumer子產品

四、Dubbo管理控制台配置

1、把dubbo-admin.war放到tomcat的webapps目錄下

2、啟動tomcat

3、在webapps檔案夾下找到dubbo-admin檔案夾，進入WEB-INF檔案夾，打開dubbo.properties，可以看到賬戶密碼分别為root guest

4、在啟動zookeeper後，然後再啟動tomcat，通路位址：http://localhost:8080/dubbo-admin/

輸入帳号密碼後即可登入到背景

zookeeper+Dubbo環境搭建及簡單Demo

--結束--

zookeeper+Dubbo環境搭建及簡單Demo

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