Dubbo 学习2 Dubbo-Admin及服务注册到Zookeeper

1. 需要先安装好zookeeper

安装启动zookeeper后，输入jps，看到输出：

2. 下载编译dubbo-admin

检出 https://github.com/alibaba/dubbo ,
整个项目编译。有的文章讲只编译dubbo-admin就可以，但我没成功。
如果编译失败，多试几次。我试了很多次才成功了。

cd dubbo-master/mvn install -Dmaven.test.skip=true

将生成的dubbo-admin-..*-SNAMPSHOT.war 部署到tomcat

3. 配置文件

部署后，修改WEB-INFO/dubbo.properties

dubbo.registry.address=zookeeper://127.0.0.1:2181  dubbo.admin.root.password=root  dubbo.admin.guest.password=guest  

4. 登陆系统

账号密码是root/root

代码

类似前一章的代码，只是服务注册方式不同

interface

DemoService

package com.alibaba.dubbo.demo;public interface DemoService {     String sayHello(String name);}

生产者

Provider.java

package com.alibaba.dubbo.demo;import org.springframework.context.support.ClassPathXmlApplicationContext;public class Provider {    public static void main(String[] args) throws Exception {        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(                new String[] { "dubbo-demo-provider.xml" });        context.start();        System.in.read();     }}

DemoServiceImpl

package com.alibaba.dubbo.demo.provider;import com.alibaba.dubbo.demo.DemoService;public class DemoServiceImpl implements DemoService {    public String sayHello(String name) {        return "Hello " + name;    }}

dubbo-demo-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">    <dubbo:application name="demo-provider"/>    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>    <!-- <dubbo:registry address="multicast://224.5.6.7:1234"/> -->    <dubbo:registry address="zookeeper://127.0.0.1:2181" />       <dubbo:protocol name="dubbo" port="20880"/>     <!-- 向注册中心注册暴漏服务地址,注册服务 -->      <dubbo:service interface="com.alibaba.dubbo.demo.DemoService" ref="demoService"/>    <bean id="demoService" class="com.alibaba.dubbo.demo.provider.DemoServiceImpl"/></beans>

pom.xml

<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.cn.ali.dubbo.provider</groupId>    <artifactId>com.cn.ali.dubbo.provider</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>jar</packaging>    <name>com.cn.ali.dubbo.provider</name>    <url>http://maven.apache.org</url>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    </properties>    <dependencies>        <dependency>            <groupId>org.apache.zookeeper</groupId>            <artifactId>zookeeper</artifactId>            <version>3.4.6</version>        </dependency>        <dependency>            <groupId>com.github.sgroschupf</groupId>            <artifactId>zkclient</artifactId>            <version>0.1</version>        </dependency>        <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>2.5.7</version>        </dependency>    </dependencies></project>

启动后，可以在dubbo admin-服务治理-服务，看到服务名称。

消费者

Consumer

package com.alibaba.dubbo.demo;import org.springframework.context.support.ClassPathXmlApplicationContext;public class Consumer {    public static void main(String[] args) throws Exception {        String s[] = System.getProperty("java.class.path").split(";");        for (String string : s) {            System.out.println(string);        }        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "dubbo-demo-consumer.xml" });        context.start();        DemoService demoService = (DemoService) context.getBean("demoService"); // obtain proxy object  for remote invocation        String hello = demoService.sayHello("world"); // execute remote invocation        System.out.println(hello); // show the result    }}

dubbo-demo-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="demo-consumer"/>    <!-- <dubbo:registry address="multicast://224.5.6.7:1234"/> -->     <dubbo:registry address="zookeeper://127.0.0.1:2181" />         <!-- 向注册中心订阅服务 -->      <dubbo:reference id="demoService" interface="com.alibaba.dubbo.demo.DemoService"/></beans>

pom.xml

<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.cn.ali.dubbo.consumer</groupId>    <artifactId>com.cn.ali.dubbo.consumer</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>jar</packaging>    <name>com.cn.ali.dubbo.consumer</name>    <url>http://maven.apache.org</url>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    </properties>    <dependencies>        <dependency>            <groupId>org.apache.zookeeper</groupId>            <artifactId>zookeeper</artifactId>            <version>3.4.6</version>        </dependency>        <dependency>            <groupId>com.github.sgroschupf</groupId>            <artifactId>zkclient</artifactId>            <version>0.1</version>        </dependency>        <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>2.5.7</version>        </dependency>    </dependencies></project>

启动消费者，到dubbo-admin查看服务：

参考：
http://blog.csdn.net/evankaka/article/details/47858707