Dubbo zookeeper 初探
转:http://blog.csdn.net/u011270461/article/details/12144623
建议参考资料:
http://blog.csdn.net/lin_fs/article/details/7395307
http://blog.csdn.net/goliathray/article/details/8565801
http://zy116494718.iteye.com/blog/1830138
http://agapple.iteye.com/blog/1292473
http://www.open-open.com/news/view/1442a5c
http://code.alibabatech.com/wiki/display/dubbo/Home
http://code.alibabatech.com/wiki/display/dubbo/User+Guide-zh
先把zookeeper在本地给安装好,
安装方法参考:http://blog.csdn.net/wxwzy738/article/details/16330253
这里的话讲述了两个工程一个工程是提供服务的,一个工程是调用服务的,因为dubbo是跟spring进行无缝连接的,故功能配置在spring的配置文件中,跟spring进行整合开发
1、工程是以maven进行构建的,使用的jar包如下:
2、服务提供者的工程
a、dubbo-demo-api 定义接口
- public interface IProcessData {
- public String deal(String data);
- }
b、dubbo-demo-provider 服务提供者
- public class ProcessDataImpl implements IProcessData {
- /*
- * @see com.xxx.bubbo.provider.IProcessData#deal(java.lang.String)
- */
- @Override
- public String deal(String data) {
- try {
- Thread.sleep(1000);
- } catch (InterruptedException e) {
- e.printStackTrace();
- }
- return "Finished:" + data;
- }
- }
c、applicationProvider.xml配置
- <?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
- ">
- <!-- Application name -->
- <dubbo:application name="hello-world-app" />
- <!-- registry address, used for service to register itself -->
- <dubbo:registry address="zookeeper://127.0.0.1:2181" />
- <!-- expose this service through dubbo protocol, through port 20880 -->
- <!--
- <dubbo:protocol name="dubbo" port="20880" />
- <dubbo:protocol name="dubbo" port="9090" server="netty"
- client="netty" codec="dubbo" serialization="hessian2" charset="UTF-8"
- threadpool="fixed" threads="100" queues="0" iothreads="9" buffer="8192"
- accepts="1000" payload="8388608" />
- -->
- <!-- Service interface Concurrent Control -->
- <dubbo:service interface="com.huangjie.dubbo_Service.service.IProcessData"
- ref="demoService" executes="10" />
- <!-- Default Protocol -->
- <!--
- <dubbo:protocol server="netty" />
- -->
- <!-- designate implementation -->
- <bean id="demoService" class="com.huangjie.dubbo_Service.service.impl.ProcessDataImpl" />
- </beans>
d、启动服务
- public class DubboProviderMain {
- public static void main(String[] args) throws Exception {
- ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
- new String[]{"applicationProvider.xml"});
- context.start();
- System.out.println("Press any key to exit.");
- System.in.read();
- }
- }
3、服务调用者的工程
a、调用类
- public class ConsumerThd implements Runnable {
- /*
- * @see java.lang.Runnable#run()
- */
- @Override
- public void run() {
- ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
- new String[]{"applicationConsumer.xml"});
- context.start();
- IProcessData demoService = (IProcessData) context.getBean("demoService"); // get
- // service
- // invocation
- // proxy
- String hello = demoService.deal("nihao"); // do invoke!
- System.out.println(Thread.currentThread().getName() + " "+hello);
- }
- public static void main(String[] args) {
- new Thread(new ConsumerThd()).start();
- /**
- * 输出结果:
- * Thread-0 Finished:nihao
- */
- }
- }
b、applicationConsumer.xml配置
- <?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
- ">
- <!-- consumer application name -->
- <dubbo:application name="consumer-of-helloworld-app" />
- <!-- registry address, used for consumer to discover services -->
- <dubbo:registry address="zookeeper://127.0.0.1:2181" />
- <dubbo:consumer timeout="5000"/>
- <!-- which service to consume? -->
- <dubbo:reference id="demoService" interface="com.huangjie.dubbo_Service.service.IProcessData" />
- </beans>
4、最后需要把zookeeper的服务给启动,在zookeeper安装文件夹下面的bin目录里面的zkServer.cmd给点击运行。不要关闭窗口,保持服务运行
这样整个调用就完成了,这样的好处是只要远程提供ip地址及端口号,以及对外调用的类,客户端就可以调用,客户端不必知道服务端的地址之类的
而且服务端可以开多个zookeeper服务,这样如果其中一个zookeeper 服务死掉了,其他服务还能正常运行
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