一、运行环境
本文运行环境:windows 7 + JDK1.8 + zookeeper-3.3.6 + dubbo-admin-2.5.4 (支持JDK 1.8)+ dubbo 2.5.3
所需工具可至资源页下载 --》点我下载
本文采用Dubbo与Zookeeper、Spring框架的整合。
主要是以下几个步骤:
1. 安装Zookeeper,启动;
2. 创建MAVEN项目,构建Dubbo+Zookeeper+Spring实现的简单Demo;
3. 安装Dubbo-admin,实现监控。
2、dataDir:是 Zookeeper 保存数据的目录,默认情况下,Zookeeper 将写数据的日志文件也保存在这个目录里。
3、dataLogDir:是 Zookeeper 保存日志文件的目录
4、clientPort:这个端口就是客户端连接 Zookeeper 服务器的端口,Zookeeper 会监听这个端口,接受客户端的访问请求。
在(D:\zookeeper-3.4.8\)目录下创建/tmp/zookeeper文件夹
启动
进入到bin文件夹下,在上面地址栏中输入cmd进入命令行,输入zkServer.cmd,若如图显示则代表启动成功。
三、创建MAVEN项目
(编译环境使用Intellij JDK版本为1.8)
项目结构:
dubbo-api : 存放公共接口;
dubbo-consumer : 调用远程服务;
dubbo-provider : 提供远程服务。
具体如图所示:
1、新建MAVEN项目 DubboDemo
导入所需要的jar包依赖。
<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> <dependency> <groupId>DubboDemo</groupId> <artifactId>dubbo-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency> </dependencies> <build> <finalName>DubboDemo</finalName> </build> </project>2、在此项目下新建MAVEN项目:dubbo-api
创建接口DemoService
package com.zh.dubbo.demo; import java.util.List; public interface DemoService { List<String> getPermissions(Long id); }(若不能创建java文件,则在java文件夹点击右键,选择Mark Directory As -----Source Root即可 )
3、 创建dubbo-provider的MAVEN项目
实现公共接口
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配置声明文件 Provider.xml 此文件放在target/classes文件夹下
<?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.zh.dubbo.demo.DemoService" ref="demoService" protocol="dubbo" /> <!--具体实现该接口的 bean--> <bean id="demoService" class="com.zh.dubbo.demo.impl.DemoServiceImpl"/> </beans>
添加 启动远程服务类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("服务已经启动..."); System.in.read(); } }4、 创建dubbo-consumer的MAVEN项目
添加Spring配置声明文件 consumer.xml 此文件放在target/classes文件夹下
<?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 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.zh.dubbo.demo.DemoService"/> </beans>创建Consumer类, 启动Consumer,调用远程服务
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) { //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)); } }
5、 运行项目,先确保provider已被运行后再启动consumer模块
四、Dubbo管理控制台配置
1、把dubbo-admin.war放到tomcat的webapps目录下
2、启动tomcat
3、在webapps文件夹下找到dubbo-admin文件夹,进入WEB-INF文件夹,打开dubbo.properties,可以看到账户密码分别为root guest
4、在启动zookeeper后,然后再启动tomcat,访问地址:http://localhost:8080/dubbo-admin/
输入帐号密码后即可登录到后台
--结束--