阿里开源dubbo+zookeeper配置详解-优快云博客

以下内容亲测过！！！！！！！！

Dubbo是一个分布式服务框架，致力于提供高性能和透明化的RPC远程服务调用方案，以及SOA服务治理方案。简单的说，dubbo就是个服务框架，如果没有分布式的需求，其实是不需要用的，只有在分布式的时候，才有dubbo这样的分布式服务框架的需求，并且本质上是个服务调用的东东，说白了就是个远程服务调用的分布式框架（告别Web Service模式中的WSdl，以服务者与消费者的方式在dubbo上注册）
服务提供者：

1. 下载zookeeper注册中心，下载地址：http://www.apache.org/dyn/closer.cgi/zookeeper/ 下载后解压即可，进入D:\apach-zookeeper-3.4.5\bin，

双击zkServer.cmd启动注册中心服务。 (要将conf/zoo_sample.cfg改为conf/zoo.cfg才能启动)

依赖jar包：

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

<artifactId>zookeeper</artifactId>

</dependency>

<groupId>com.alibaba</groupId>

<artifactId>dubbo</artifactId>

</dependency>

<artifactId>zkclient</artifactId>

</dependency>

2. 定义服务接口: (该接口需单独打包，在服务提供方和消费方共享)

package com.unj.dubbotest.provider;

import java.util.List;

public interface DemoService {

    String sayHello(String name);

    public List getUsers();

}

  在服务提供方实现接口：(对服务消费方隐藏实现)

package com.unj.dubbotest.provider;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
public class DemoServiceImpl implements DemoService{
public String sayHello(String name) {
return "Hello " + name;
}
public List getUsers() {
List list = new ArrayList();
User u1 = new User();
u1.setName("jack");
u1.setAge(20);
u1.setSex("男");
User u2 = new User();
u2.setName("tom");
u2.setAge(21);
u2.setSex("女");
User u3 = new User();
u3.setName("rose");
u3.setAge(19);
u3.setSex("女");
list.add(u1);
list.add(u2);
list.add(u3);
return list;
}
}
用Spring配置声明暴露服务：接口
<?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 ;
">
<bean id="demoService" class="com.unj.dubbotest.provider.DemoServiceImpl" />
<dubbo:application name="xixi_provider" />
<!-- 使用multicast广播注册中心暴露服务地址
<dubbo:registry address="multicast://224.5.6.7:1234" />-->
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<dubbo:protocol name="dubbo" port="20880" />
<dubbo:service interface="com.unj.dubbotest.provider.DemoService" ref="demoService" />
</beans>
加载Spring配置，启动服务：
package com.unj.dubbotest.provider;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Provider {
public static void main(String[] args) throws Exception {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"applicationContext.xml"});
context.start();
System.in.read(); // 为保证服务一直开着，利用输入流的阻塞来模拟
}
}
服务消费者：
1.通过Spring配置引用远程服务：
1. <?xml version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
4. xsi:schemaLocation="http://www.springframework.org/schema/beans ;
5. http://www.springframework.org/schema/beans/spring-beans.xsd ;
6. http://code.alibabatech.com/schema/dubbo ;
7. http://code.alibabatech.com/schema/dubbo/dubbo.xsd ;
8. ">
10. 
11. <dubbo:application name="hehe_consumer" />
13. 
14. 
15. <dubbo:registry address="zookeeper://127.0.0.1:2181" />
17. 
18. <dubbo:reference id="demoService"
19. interface="com.unj.dubbotest.provider.DemoService" />
21. </beans>
2.加载Spring配置，并调用远程服务：
package com.alibaba.dubbo.demo.pp;
import java.util.List;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.unj.dubbotest.provider.DemoService;
public class Consumer {
public static void main(String[] args) throws Exception {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
new String[] { "applicationContext.xml" });
context.start();
DemoService demoService = (DemoService) context.getBean("demoService"); //
String hello = demoService.sayHello("tom"); // ִ
System.out.println(hello); //
//
List list = demoService.getUsers();
if (list != null && list.size() > 0) {
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i));
}
}
// System.out.println(demoService.hehe());
System.in.read();
}
}

调用结果为：