SpringCloudAlibaba：nacos实现服务注册和发现

SpringCloudAlibaba：nacos实现服务注册和发现 一、nacos安装

docker安装单节点nacos
访问地址：192.168.31.100:8848/nacos

二、nacos入门 1.父工程

1.pom文件

 
        1.8
        UTF-8
        UTF-8
        2.3.7.RELEASE
        Hoxton.SR9
        2.1.0.RELEASE
    

        
            
                org.springframework.boot
                spring-boot-dependencies
                ${spring-boot.version}
                pom
                import
            
            
                org.springframework.cloud
                spring-cloud-dependencies
                ${spring-cloud.version}
                pom
                import
            
            
            
                com.alibaba.cloud
                spring-cloud-alibaba-dependencies
                ${spring-cloud-alibaba.version}
                pom
                import
            
        
    

2.服务提供者

1.pom文件

        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-discovery
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.boot
            spring-boot-starter-actuator
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
    

2.application.yml

server:
  port: 8001

spring:
  application:
    name: provider
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.31.100:8848

#暴露监控
management:
  endpoints:
    web:
      exposure:
        include: '*'

3.controller

@RestController
@RequestMapping("/provider")
public class ProviderController {
    @Value("${server.port}")
    private Integer port;
    @GetMapping("/hello")
    public String hello(){
        return "Hello nacos , server port is "+port;
    }
}

4.启动类

@SpringBootApplication
@EnableDiscoveryClient
public class NacosProviderApplication {

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

}

5.测试

3.再次创建服务提供者

这里跟上面的服务提供方一样，只需要改一下配置类中的端口

这里实例数变成了俩个

4.创建消费者 1.pom文件

        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-discovery
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.boot
            spring-boot-starter-actuator
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        
    

2.application.yml

server:
  port: 9003
spring:
  application:
    name: customer
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.31.100:8848

3.配置类

@Configuration
public class RestTemplateConfig {
    @Bean
    @LoadBalanced
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

4.controller

@RestController
@RequestMapping("/customer")
public class CustomerController {
    @Autowired
    private RestTemplate restTemplate;

    private final String SERVER_URL="http://provider";

    @GetMapping(value = "/hello")
    public String hello(){
        return restTemplate.getForObject(SERVER_URL+"/provider/hello", String.class);
    }
}

5.启动类

@SpringBootApplication
@EnableDiscoveryClient
public class NacosConsumerApplication {

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

}

6.测试

这里@LoadBalanced注解起作用了，实现了轮询