【Spring Boot 3】整合nacos + Dubbo3 的Spring cloud Alibaba项目

整合nacos + Dubbo3的Spring cloud Alibaba项目，你需要做以下几步：

1. 在pom.xml中添加Spring Cloud Alibaba Nacos和Dubbo3的依赖。

<dependencies>
    <!-- Spring Cloud Alibaba Nacos -->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>
 
    <!-- Dubbo3 Spring Cloud Starter -->
    <dependency>
        <groupId>org.apache.dubbo</groupId>
        <artifactId>dubbo-spring-cloud-starter</artifactId>
        <version>3.0.0</version>
    </dependency>
</dependencies>

2. 在application.properties或application.yml中配置Nacos服务器地址和Dubbo3相关配置。

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848 # Nacos服务器地址
 
dubbo:
  scan:
    base-packages: com.example.service # Dubbo服务所在的包
  protocol:
    name: dubbo # 使用dubbo协议
    port: -1 # 端口设置为-1表示自动分配端口
  registry:
    address: spring-cloud://localhost # 指定注册中心地址

3. 在Spring Boot启动类上添加@EnableDubbo注解启用Dubbo3。

import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@EnableDubbo
@SpringBootApplication
public class Dubbo3Application {
    public static void main(String[] args) {
        SpringApplication.run(Dubbo3Application.class, args);
    }
}

4. 创建服务提供者和服务消费者。

提供者示例：

import org.apache.dubbo.config.annotation.DubboService;
import org.apache.dubbo.rpc.RpcContext;
 
@DubboService(version = "1.0.0")
public class HelloServiceImpl implements HelloService {
    public String sayHello(String name) {
        String clientIp = RpcContext.getContext().getRemoteAddressString();
        return "Hello, " + name + ", request from client: " + clientIp;
    }
}

消费者示例：

import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
 
@RestController
public c