我们现在来学习下发布Dubbo服务,主要参考dubbo开发包里的demo源码;由浅入深的讲解下这个小demo;
首先创建一个maven项目dubbo-demo-provider
pom.xml加入依赖:
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
<version>4.0.1</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.46</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.0.35.Final</version>
</dependency>
</dependencies>
然后定义一个服务接口:
package com.java1234.service;
/**
* 服务提供者接口
* @author Administrator
*
*/
public interface DemoProviderService {
public String sayHello(String name);
}
再定义接口实现类:
package com.java1234.service.impl;
import com.java1234.service.DemoProviderService;
/**
* 服务提供者接口实现类
* @author Administrator
*
*/
public class DemoProviderServiceImpl implements DemoProviderService{
public String sayHello(String name) {
return "服务员001";
}
}
然后再搞个dubbo配置文件dubbo-demo-provider.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<!-- 提供方应用名称, 用于计算依赖关系 -->
<dubbo:application name="demo-provider"/>
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
<!-- 使用dubbo协议在20880端口暴露服务 -->
<dubbo:protocol name="dubbo" port="20880"/>
<!-- service实现类作为本地的一个bean -->
<bean id="demoProviderService" class="com.java1234.service.impl.DemoProviderServiceImpl"/>
<!-- 声明需要暴露的服务接口 -->
<dubbo:service interface="com.xhz.service.DemoProviderService" ref="demoProviderService"/>
</beans>
测试类:
import
java.io.IOException;
import
org.springframework.context.support.ClassPathXmlApplicationContext;
public
class
ProviderTest {
public
static
void
main(String[] args) {
ClassPathXmlApplicationContext context =
new
ClassPathXmlApplicationContext(
new
String[]{
"dubbo-demo-provider.xml"
});
context.start();
System.out.println(
"服务提供者注册成功(端口:20880)"
);
try
{
System.in.read();
}
catch
(IOException e) {
e.printStackTrace();
}
context.close();
}
}
然后我们测试发布dubbo服务,
首先我们要先启动zookeeper服务,
然后我们运行测试类,发布服务注册到zookeeper注册中心去;
说明发布服务OK;
后面我们会讲到dubbo-admin 有web管理系统可以看到具体的服务信息。