bootstrap.properties

spring.application.name=example

spring.main.allow-bean-definition-overriding=true
spring.cloud.nacos.discovery.server-addr=192.168.1.114:8847
spring.cloud.nacos.config.file-extension=properties
spring.cloud.nacos.config.server-addr=192.168.1.114:8847
spring.cloud.nacos.config.group=DEFAULT_GROUP

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.9.RELEASE</version>
</parent>


<!--引入SpringBoot等依賴-->
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>

    </dependency>


    <!--Spring Cloud Alibaba-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        <version>0.9.0.RELEASE</version>
    </dependency>


    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        <version>0.9.0.RELEASE</version>
    </dependency>



</dependencies>

import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
@RefreshScope
@RestController
public class SayHelloController {


    @ResponseBody
    @GetMapping("/")
    public String findAllUser( ){

        return "11111";
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.ComponentScan;

//使用SpringBootApplication註解的時候下面顯示紅線 那麼採用@ComponentScan和@EnableAutoConfiguration註解替換 就不報錯了
@EnableDiscoveryClient //註冊


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