一、在指定的服务器启动zookeeper作为服务注册中心
二、创建服务提供者
1.添加依赖，完整依赖类似如下：

<?xml version="1.0" encoding="UTF-8"?>
<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>org.example</groupId>
    <artifactId>dubbo-service-provider</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <dubbo.version>3.1.8</dubbo.version>
        <spring-boot.version>2.7.10</spring-boot.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-dependencies-zookeeper</artifactId>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
        </dependency>

    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-bom</artifactId>
                <version>${dubbo.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-dependencies-zookeeper</artifactId>
                <version>${dubbo.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

2.配置文件中配置dubbo相关信息（使用dubbo协议）和zookeeper的地址

server:
  port: 9811
dubbo:
  application:
    name: dubbo-springboot-demo-provider
  protocol:
    name: dubbo
    port: -1
  registry:
    address: zookeeper://xx.xx.xx.xx:2181

3.创建服务定义接口

package cn.edu.tju.service;

public interface DemoService {

    String sayHello(String name);
}

4.定义服务实现,使用注解@DubboService将服务注册到zookeeper

package cn.edu.tju.service;

import org.apache.dubbo.config.annotation.DubboService;


@DubboService
public class DemoServiceImpl implements DemoService {

    public String sayHello(String name) {
        return "Hello " + name;
    }
}

5.定义spring boot 主类，加上@EnableDubbo注解

package cn.edu.tju;

import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@EnableDubbo
public class Start {
    public static void main(String[] args) {
        SpringApplication.run(Start.class, args);
    }
}

三、创建服务消费者
1.添加依赖，和服务生产者类似
2.配置dubbo信息和zookeeper地址

server:
  port: 9812
dubbo:
  application:
    name: dubbo-springboot-demo-consumer
  protocol:
    name: dubbo
    port: -1
  registry:
    address: zookeeper://xx.xx.xx.xx:2181

3.创建服务定义接口，和服务提供者端相同

package cn.edu.tju.service;

public interface DemoService {

    String sayHello(String name);
}

4.创建服务实现，通过@DubboReference注解使用服务提供者所提供的服务

package cn.edu.tju.service;

import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import java.util.Date;

@Service
public class RemoteService {

    @DubboReference
    private DemoService demoService;


    public String  callRemoteService(){
        try {
            Thread. sleep(1000);
            return new Date() + " Receive result ======> " + demoService.sayHello("world");
        } catch (InterruptedException e) {
            e.printStackTrace();
            return e.getMessage();
        }
    }
}

5.定义controller,注入service

package cn.edu.tju.cn.edu.tju;

import cn.edu.tju.service.RemoteService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class DemoController {
    @Autowired
    private RemoteService remoteService;

    @RequestMapping("/getDubbo")
    public String getDubbo(){
        return remoteService.callRemoteService();
    }
}

6.定义spring boot 主类，加上@EnableDubbo注解

package cn.edu.tju;

import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@EnableDubbo
public class Start {
    public static void main(String[] args) {
        SpringApplication.run(Start.class, args);
    }
}

7.分别启动生产者和消费者，然后调用接口进行测试