springcloudAlibaba整合nacos

springcloudAlibaba整合nacos

1、添加依赖

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <version>${latest.version}</version>
</dependency>

注意：版本 2.1.x.RELEASE 对应的是 Spring Boot 2.1.x 版本。版本 2.0.x.RELEASE 对应的是 Spring Boot 2.0.x 版本，版本 1.5.x.RELEASE 对应的是 Spring Boot 1.5.x 版本。

2、配置文件application.properties

server:
  port: 8082
spring:
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.123.101:8848,192.168.123.101:8849,192.168.123.101:8850
        namespace: nacos-dev
  application:
    name: nacos-demo01

3、添加注解

通过 Spring Cloud 原生注解 @EnableDiscoveryClient 开启服务注册发现功能

@SpringBootApplication
@EnableDiscoveryClient
public class NacosProviderApplication {

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

    @RestController
    class EchoController {
        @RequestMapping(value = "/echo/{string}", method = RequestMethod.GET)
        public String echo(@PathVariable String string) {
            return "Hello Nacos Discovery " + string;
        }
    }
}

4、通过 Spring Cloud 原生注解 @EnableDiscoveryClient 开启服务注册发现功能

给 RestTemplate 实例添加 @LoadBalanced 注解，开启 @LoadBalanced 与 Ribbon 的集成：

@SpringBootApplication
@EnableDiscoveryClient
public class NacosConsumerApplication {

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

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

    @RestController
    public class TestController {

        private final RestTemplate restTemplate;

        @Autowired
        public TestController(RestTemplate restTemplate) {this.restTemplate = restTemplate;}

        @RequestMapping(value = "/echo/{str}", method = RequestMethod.GET)
        public String echo(@PathVariable String str) {
            return restTemplate.getForObject("http://service-provider/echo/" + str, String.class);
        }
    }
}

 5、springCloudAlibaba和nacos，springboot版本说明

Spring Cloud Version	Spring Cloud Alibaba Version	Spring Boot Version
Spring Cloud 2020.0.1	2021.1	2.4.2
Spring Cloud Hoxton.SR9	2.2.6.RELEASE	2.3.2.RELEASE
Spring Cloud Greenwich.SR6	2.1.4.RELEASE	2.1.13.RELEASE
Spring Cloud Hoxton.SR3	2.2.1.RELEASE	2.2.5.RELEASE
Spring Cloud Hoxton.RELEASE	2.2.0.RELEASE	2.2.X.RELEASE
Spring Cloud Greenwich	2.1.2.RELEASE	2.1.X.RELEASE
Spring Cloud Finchley	2.0.4.RELEASE(停止维护，建议升级)	2.0.X.RELEASE
Spring Cloud Edgware	1.5.1.RELEASE(停止维护，建议升级)	1.5.X.RELEASE

6、命名空间

 

查看地址：https://github.com/alibaba/spring-cloud-alibaba/wiki/%E7%89%88%E6%9C%AC%E8%AF%B4%E6%98%8E

参考地址：https://github.com/alibaba/spring-cloud-alibaba/blob/master/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme.md