工程结构：

版本信息：

jdk版本：1.8
springboot-parent版本：2.6.6springboot版本：2.6.6
dubbo-spring-boot-starter版本：3.0.7dubbo版本：3.0.7
dubbo-registry-zookeeper版本：3.0.7curator版本：4.2.0
dubbo-registry-nacos版本：3.0.7nacos-client版本：2.0.4

注意事项：正确的版本很重要，否则会报莫名其妙的错误！！！

1. 本地启动zookeeper服务/nacos服务（略）
2. 新建父工程testDubbo
   pom文件：

<?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.testDubbo</groupId><artifactId>testDubbo</artifactId><packaging>pom</packaging><version>1.0-SNAPSHOT</version><modules><module>testProvider</module><module>testConsumer</module><module>api</module></modules><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.6.6</version></parent><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencyManagement><dependencies><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>3.0.7</version></dependency><!--zookeeper配置1或2都可以--><!--zookeeper配置1-->
<!--            <dependency>-->
<!--                <groupId>org.apache.dubbo</groupId>-->
<!--                <artifactId>dubbo-dependencies-zookeeper</artifactId>-->
<!--                <version>3.0.7</version>-->
<!--                <type>pom</type>-->
<!--            </dependency>--><!--zookeeper配置2--><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-zookeeper</artifactId><version>3.0.7</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId><version>3.0.7</version></dependency></dependencies></dependencyManagement></project>

3. 新建子工程api
   pom文件：

<?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"><parent><artifactId>testDubbo</artifactId><groupId>org.example.testDubbo</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>api</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency></dependencies></project>

 定义DTO和Provider接口：

package org.example.testDubbo.api.dto;import lombok.Data;import java.io.Serializable;
import java.util.Random;@Data
public class UserDTO implements Serializable {private Long id;private String name;private Integer age;public static UserDTO mockUser(Long id){UserDTO userDTO = new UserDTO();userDTO.setId(id);userDTO.setAge(18);userDTO.setName("张三_"+userDTO.getId());return userDTO;}
}

package org.example.testDubbo.api.provider;import org.example.testDubbo.api.dto.UserDTO;public interface UserProvider {UserDTO getById(Long id);}

5. 新建子工程testProvider
   pom文件：

<?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"><parent><artifactId>testDubbo</artifactId><groupId>org.example.testDubbo</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>testProvider</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>org.example.testDubbo</groupId><artifactId>api</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-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-registry-zookeeper</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId></dependency></dependencies></project>

配置文件application.yml:

dubbo:application:name: testProviderregistry:#  address: zookeeper://localhost:2181address: nacos://localhost:8848group: registry_group_testDubbo_serviceprotocol:id: dubboname: dubboport: 8088scan:base-packages: org.example.testDubbo.testProvider.provider

实现provider接口：

package org.example.testDubbo.testProvider.provider;import org.apache.dubbo.config.annotation.DubboService;
import org.example.testDubbo.api.dto.UserDTO;
import org.example.testDubbo.api.provider.UserProvider;@DubboService
public class UserProviderImpl implements UserProvider {@Overridepublic UserDTO getById(Long id) {System.out.println("我是服务提供者，被调用了");return UserDTO.mockUser(id);}
}

7. 新建子工程testConsumer
   pom文件：

<?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"><parent><artifactId>testDubbo</artifactId><groupId>org.example.testDubbo</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>testConsumer</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>org.example.testDubbo</groupId><artifactId>api</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-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-registry-zookeeper</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId></dependency></dependencies></project>

配置文件application.yml:

server:port: 80dubbo:application:name: testConsumerregistry:
#    address: zookeeper://localhost:2181address: nacos://localhost:8848group: registry_group_testDubbo_serviceprotocol:id: dubboname: dubboport: 8088
#  consumer:
#    check: false

测试类Controller:

package org.example.testDubbo.testConsumer.controller;import org.apache.dubbo.config.annotation.DubboReference;
import org.example.testDubbo.api.dto.UserDTO;
import org.example.testDubbo.api.provider.UserProvider;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping(value = "/user")
public class UserController {@DubboReferenceprivate UserProvider userProvider;@GetMapping(value = "/getById")public UserDTO getById(@RequestParam Long id){return userProvider.getById(id);}}

8. 部署dubbo-admin
   8.1 下载源码：https://github.com/apache/dubbo-admin.git
   8.2 由于本测试dubbo版本是3.0.7，因此我拉取了靠近该版本的git版本：2353c814
   
   8.3 修改子工程dubbo-admin-server的配置文件:application.properties

……
admin.registry.address=zookeeper://localhost:2181
admin.config-center=zookeeper://localhost:2181
admin.metadata-report.address=zookeeper://localhost:2181admin.registry.group=registry_group_testDubbo_service
admin.config-center.group=registry_group_testDubbo_service
admin.metadata-report.group=registry_group_testDubbo_service
……

8.4 启动子工程dubbo-admin-server（默认会占用端口8080，用于ui工程访问，可修改该端口）
8.5 启动ui工程dubbo-admin-ui，启动命令：

npm run dev

启动成功后会打印访问地址：http://localhost:8082/
8.6 如需修改dubbo-admin-server端口，需要同时修改2处：
dubbo-admin-server的配置文件application.properties:

server.port=8989

dubbo-admin-ui的配置文件vue.config.js:

module.exports = {……proxy: {'/': {target: 'http://localhost:8989/',……