<1>Dubbo快速入门 发布服务、启动服务

<dependency>
    <groupId>com.vhukze</groupId>
    <artifactId>vhukze-member-public-dubbo-api</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </dependency>

package com.vhukze.api.member.service.impl;
import com.vhukze.api.member.service.MemberService;
public class MemberServiceImpl implements MemberService {
  public String getUser(Long userId) {
  // TODO Auto-generated method stub
  System.out.println(userId);
  return "getUser OK";
  }
}
在pom文件中引入需要的包
<!-- zookeeper客户端连接工具 -->
  <dependency>
    <groupId>com.101tec</groupId>
    <artifactId>zkclient</artifactId>
    <version>0.10</version>
  </dependency>
  <dependency>
    <groupId>commons-logging</groupId>
    <artifactId>commons-logging</artifactId>
    <version>1.2</version>
  </dependency>
  <!-- dubbo底层框架基于netty实现 -->
  <dependency>
    <groupId>org.jboss.netty</groupId>
    <artifactId>netty</artifactId>
    <version>3.2.5.Final</version>
  </dependency>
  <!-- spring框架组件 -->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.3.9.RELEASE</version>
  </dependency>
  <!-- dubbo包 -->
  <dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.5.3</version>
    <exclusions>
    <exclusion>
      <groupId>org.springframework</groupId>
      <artifactId>spring</artifactId>
    </exclusion>
    <exclusion>
      <groupId>org.jboss.netty</groupId>
      <artifactId>netty</artifactId>
    </exclusion>
    </exclusions>
  </dependency>
在resources文件下创建一个dubbo-provider.xml文件
内容如下，注意接口和接口的实现bean那里是刚才创建的接口和实现类
<?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">
  <!--服务名称 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="member-provider" />
  <!--注册中心的地址 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.vhukze.api.member.service.MemberService"
  ref="memberService" protocol="dubbo" />
  <!--具体实现该接口的 bean -->
  <bean id="memberService" class="com.vhukze.api.member.service.impl.MemberServiceImpl" />
</beans>

package com.vhukze.member.app;
import java.io.IOException;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class AppMember {
  public static void main(String[] args) throws IOException {
  //加载配置文件
  ClassPathXmlApplicationContext app = new ClassPathXmlApplicationContext("dubbo-provider.xml");
  //启动服务
  app.start();
  System.out.println("会员服务启动成功");
  //保持服务一直在运行
  System.in.read();
  }
}