springboot通过nacos集成dubbo

服务端（被调用）：
pom:

 <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>2.2.4.RELEASE</version>
        </dependency>
 <!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-spring-boot-starter -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>2.7.8</version>
        </dependency>

yml:

server:
  port: 9999
spring:
  application:
    name: dtest
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
#dubbo  服务者配置
dubbo:
  application: #应用配置，用于配置当前应用信息，不管该应用是提供者还是消费者。
    name: Provide
  registry: #注册中心配置，用于配置连接注册中心相关信息。
    address: nacos://127.0.0.1:8848
  protocol: #协议配置，用于配置提供服务的协议信息，协议由提供方指定，消费方被动接受。
    name: dubbo
    port: 20880
  scan:
    base-packages: com.example.dtest.dubboProvide.service  #服务暴露与发现消费所在的package

最后配置的扫描的dubbo服务包

dubbo服务接口：注意这里的@service是dubbo的，后面才能注入到其他服务中

package com.example.dtest.dubboProvide.service.imp;

import com.alibaba.dubbo.config.annotation.Service;
import com.example.service.DemoService;

@Service(version = "1.0.0")
@org.springframework.stereotype.Service
public class DemoServerImpl implements DemoService {


    @Override
    public String sayHello(String s) {
        System.out.println("远程调用该服务方！");
        return "你好"+s+"!";
    }
}

客户端（调用的/消费端）：
pom:

```powershell
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>

<!--        要把web的去掉-->
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>dtestcommon</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </exclusion>
            </exclusions>
        </dependency>

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

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


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

        <!--        &lt;!&ndash;gateway&ndash;&gt;-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
            <version>2.2.1.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>2.2.4.RELEASE</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.12.0</version>
        </dependency>


        <!--         https://mvnrepository.com/artifact/com.alibaba/dubbo-->
<!--        <dependency>-->
<!--            <groupId>com.alibaba</groupId>-->
<!--            <artifactId>dubbo</artifactId>-->
<!--            <version>2.5.3</version>-->
<!--            <exclusions>-->
<!--                <exclusion>-->
<!--                    <groupId>org.springframework</groupId>-->
<!--                    <artifactId>spring</artifactId>-->
<!--                </exclusion>-->
<!--                <exclusion>-->
<!--                    <groupId>org.jboss.netty</groupId>-->
<!--                    <artifactId>netty</artifactId>-->
<!--                </exclusion>-->
<!--            </exclusions>-->
<!--        </dependency>-->

        <!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-spring-boot-starter -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>2.7.8</version>
        </dependency>



    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

yml:

```powershell
server:
  port: 8889

spring:
  cloud:
    gateway:
      routes:
        - id: path_route
          uri: lb://dtest  #配置的实际想访问的动态地址（nacos注册的）
          predicates: #断言，路径相匹配的进行路由
#            - Path=/myWebsocket/000  #路径符合条件的（断言这个路径要是实际路由有的那个地址,要是真实访问地址服务器里面有的地址）
            - Path=/myWebsocket/**  #路径符合条件的（断言这个路径要是实际路由有的那个地址,要是真实访问地址服务器里面有的地址）
    nacos:
      discovery:
        server-addr: localhost:8848

  application:
    name: demogateway

dubbo:
  application: #应用配置，用于配置当前应用信息，不管该应用是提供者还是消费者。
    name: Consumer
  registry: #注册中心配置，用于配置连接注册中心相关信息。
    address: nacos://127.0.0.1:8848
  protocol: #协议配置，用于配置提供服务的协议信息，协议由提供方指定，消费方被动接受。
    name: dubbo
    port: 20880
  scan:
    base-packages: com.example.dtestgateway.dubboConsumer.service #服务暴露与发现消费所在的package

消费的dubbo接口类：

package com.example.dtestgateway.dubboConsumer.service.imp;

import com.example.service.DemoService;
import org.apache.dubbo.config.annotation.dubboReference;
import org.springframework.stereotype.Service;

@Service
public class dubboTestService {

    @dubboReference(version = "1.0.0")
    public DemoService demoService;

    public String Echo(String s){
        String ret_msg;
        try {
            ret_msg  = demoService.sayHello(s);
        }catch (Exception e){
            e.printstacktrace();
            ret_msg = "出错啦！";
        }
        return  ret_msg;
    }

}

注意：这里的@dubboReference也是dubbo的，才能注入

controller:

package com.example.dtestgateway.controller;

import com.example.dtestcommon.vo.Res;
import com.example.dtestgateway.dubboConsumer.service.imp.dubboTestService;
import org.springframework.beans.factory.annotation.Autowired;
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("/dubbo")
public class dubboTestController {

    @Autowired
    dubboTestService dubboTestService;

    @GetMapping("/pushString")
    public Res Hello(@RequestParam("name") String name){
        String str = dubboTestService.Echo(name);
        return Res.success(str);
    }

}

公共服务，调用包：服务端是集成的这个公共接口，然后服务端调用注入的也是这个公共接口，他在仅仅作用于调用的公共服务里

package com.example.service;

public interface DemoService {

    String sayHello(String s);

}

测试：