一 搭建工程的初衷

之所以再简单的搭建一次dubbo+zookeeper主要是因为很久没有用到过了，都已经忘记是怎么使用的了。想再次学习记录一下。

二 启动zookeeper,搭建工程

1、项目目录总览

2、父工程中的pom

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.2.RELEASE</version>
		<relativePath />
	</parent>


	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<scope>runtime</scope>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
	<modules>
		<module>yk-dubbo-Service</module>
		<module>yk-dubbo-consumer</module>
		<module>yk-dubbo-API</module>
	</modules>

3、API工程

此工程是对外提供RPC接口的工程，写一个接口类供演示使用

package com.yk.service;

public interface HelloDubboService {
	
	public String hello(String text);

}

3、服务提供者工程 

• pom配置

<dependency>
			<groupId>com.yk</groupId>
			<artifactId>yk-dubbo-API</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>

		<dependency>
			<groupId>com.alibaba.boot</groupId>
			<artifactId>dubbo-spring-boot-starter</artifactId>
			<version>0.2.0</version>
		</dependency>
		<dependency>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
			<version>3.4.13</version>
		</dependency>

• YML配置

#Dubbo 服务提供者配置
spring:
  application:
    name: provider
server:
  port: 8081
  
  
dubbo:
  application:
    name: provider
  registry:
# zookeeper 注册中心地址  
    address: zookeeper://192.168.1.123:2181
  protocol:
    name: dubbo
# dubbo端口
    port: 20880
  

• springboot入口文件配置

@EnableDubbo //开启dubbo服务
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class DubboServiceApplication {
	public static void main(String[] args) {
		SpringApplication.run(DubboServiceApplication.class, args);
	}

}

• serviceImpl代码

import java.util.Date;
import com.alibaba.dubbo.config.annotation.Service;
//使用dubbo的
import com.yk.service.HelloDubboService;

@Service(version = "helloDubboService")
public class HelloDubboServiceImpl implements HelloDubboService {

    @Override
    public String hello(String name) {

        return "于"+new Date() + ",发送者：" + name;
    }

}

4、服务消费者工程 

 

• pom

		<dependency>
			<groupId>com.yk</groupId>
			<artifactId>Springboot-dubbo-API</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
	
		<dependency>
			<groupId>com.alibaba.boot</groupId>
			<artifactId>dubbo-spring-boot-starter</artifactId>
			<version>0.2.0</version>
		</dependency>
		<dependency>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
			<version>3.4.13</version>
		</dependency>

• YML配置与Springboot入口文件和上面的配置一样，启动的端口号更改一下。

• controller代码

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.alibaba.dubbo.config.annotation.Reference;
import com.yk.service.HelloDubboService;

@RestController
public class DubboController {

	//@Reference 使用dubbo的
	@Reference(version = "helloDubboService")
	private HelloDubboService h;

	@RequestMapping("/")
	public String demo() {
		return h.hello("张三");
	}

}

五、启动zookeeper ，启动消费者和提供者

这样一个简单的使用zookeeper+dubbo就可以成功了

三 使用dobbo-Admin查看服务的提供者和消费者

将下载好的dubbo-admin-2.6.0 .war扔进tomcat里面解压出来,更改文件名为dubbo

修改dubbo/WEB-INF/dubbo.properties

 dubbo.registry.address=zookeeper://192.168.1.123:2181		//配置Zookeeper中心地址，集群时填写集群地址
 dubbo.admin.root.password=root									//客户端默认用户名为root
 dubbo.admin.guest.password=root									//客户端密码

　

四 总结

　　这个demo搭建的非常简陋，主要也是记录一下大致的过程。后续也会深入学习