Dubbo 简单demo

dubbo-server 工程（服务提供方）

1、服务接口

public interface DemoService {String sayHello(String name);}

2、接口实现

import java.text.NumberFormat;import com.xbz.service.DemoService;public class DemoServiceImpl implements DemoService {public String sayHello(String name) {System.out.println("init : " + name);return "hello " + name;} public static void main(String[] args) { double x=23.5455;  NumberFormat ddf1=NumberFormat.getNumberInstance() ; ddf1.setMaximumFractionDigits(4);  String s= ddf1.format(x) ;  System.out.println(s);  String a =  ddf1.format(3.1234); System.out.println(a);}}

3、spring 服务提供者配置文件applicationProvider.xml（将该接口通过dubbo 注册成服务的配置）

<?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 "><dubbo:application name="dubbo-demo" /><!-- zookeeper注册中心 --><dubbo:registry address="zookeeper://127.0.0.1:2181" /><dubbo:protocol name="dubbo" port="20880" /><!-- 和本地bean一样实现服务 --> <bean id="demoService" class="com.xbz.service.impl.DemoServiceImpl" /><!-- 向注册中心注册暴漏服务地址,注册服务 --><dubbo:service interface="com.xbz.service.DemoService"ref="demoService" executes="10" /></beans>

4、main方法 启动服务

import java.io.IOException;import org.springframework.context.support.ClassPathXmlApplicationContext;public class ServerMain {public static void main(String[] args) throws IOException {ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] { "applicationProvider.xml" });context.start();System.out.println("输入任意按键退出 ~ ");System.in.read();context.close();}}

5、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.xbz</groupId><artifactId>dubbo-server</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>server</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- spring begin --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.1.6.RELEASE</version></dependency><!-- spring end --><!-- dubbo begin --><dependency><groupId>com.alibaba</groupId><artifactId>dubbo</artifactId><version>2.5.3</version></dependency><!-- dubbo end --><!-- 注册中心zookeeper begin --><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>3.3.6</version></dependency><!-- 注册中心zookeeper end --><!-- log begin --><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>1.1.1</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.15</version><exclusions><exclusion><groupId>com.sun.jdmk</groupId><artifactId>jmxtools</artifactId></exclusion><exclusion><groupId>com.sun.jmx</groupId><artifactId>jmxri</artifactId></exclusion><exclusion><artifactId>jms</artifactId><groupId>javax.jms</groupId></exclusion><exclusion><artifactId>mail</artifactId><groupId>javax.mail</groupId></exclusion></exclusions></dependency><!-- log end --><!-- other begin --><dependency><groupId>org.jboss.netty</groupId><artifactId>netty</artifactId><version>3.2.0.Final</version></dependency><dependency><groupId>com.101tec</groupId><artifactId>zkclient</artifactId><version>0.8</version></dependency><!-- other end --></dependencies></project>

dubbo-client 工程(服务调用方)

1、调用方配置文件applicationConsumer.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.xsdhttp://code.alibabatech.com/schema/dubbo    http://code.alibabatech.com/schema/dubbo/dubbo.xsd"><dubbo:application name="consumer-of-dubbo-demo" /><dubbo:registry address="zookeeper://127.0.0.1:2181" /><!-- 向注册中心订阅服务 --><dubbo:reference id="demoService" interface="com.xbz.service.DemoService" /></beans> 

2、调用代码

import org.springframework.context.support.ClassPathXmlApplicationContext;import com.xbz.service.DemoService;public class ClientMain {public static void main(String[] args) {ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationConsumer.xml" });context.start();DemoService service = (DemoService) context.getBean("demoService");System.out.println(service.sayHello("world"));context.close();}}

3、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.xbz</groupId><artifactId>dubbo-client</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>client</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- spring begin --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.1.6.RELEASE</version></dependency><!-- spring end --><!-- dubbo begin --><dependency><groupId>com.alibaba</groupId><artifactId>dubbo</artifactId><version>2.5.3</version></dependency><!-- dubbo end --><!-- 注册中心zookeeper begin --><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>3.3.6</version></dependency><!-- 注册中心zookeeper end --><!-- log begin --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.15</version><exclusions><exclusion><groupId>com.sun.jdmk</groupId><artifactId>jmxtools</artifactId></exclusion><exclusion><groupId>com.sun.jmx</groupId><artifactId>jmxri</artifactId></exclusion><exclusion><artifactId>jms</artifactId><groupId>javax.jms</groupId></exclusion><exclusion><artifactId>mail</artifactId><groupId>javax.mail</groupId></exclusion></exclusions></dependency><!-- log end --><!-- other begin --><dependency><groupId>com.101tec</groupId><artifactId>zkclient</artifactId><version>0.8</version></dependency><dependency><groupId>com.xbz</groupId><artifactId>dubbo-server</artifactId><version>0.0.1-SNAPSHOT</version></dependency><!-- other end --></dependencies></project>

搭建该服务需要启动zookeeper