前情提要
Spring Cloud Alibaba Github

安装Nacos服务器

Docker安装

  1. docker search nacos
  2. docker pull nacos/nacos-server
  3. docker run --env MODE=standalone --name nacos -d -p 8848:8848 nacos/nacos-server

访问http://localhost:8848/nacos即可

生产者/消费者

生产者与消费者代码几乎相同

添加依赖

  1. <parent>
  2.   <groupId>org.springframework.boot</groupId>
  3.   <artifactId>spring-boot-starter-parent</artifactId>
  4.   <version>2.2.10.BUILD-SNAPSHOT</version>
  5.   <relativePath/> <!-- lookup parent from repository -->
  6. </parent>
  9. <dependency>
  10.   <groupId>com.alibaba.cloud</groupId>
  11.   <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
  12. </dependency>

修改配置文件

  1. # application.yml
  2. server:
  3.   port: 8001
  4. spring:
  5.   application:
  6.     name: nacos-provider
  7.   cloud:
  8.     nacos:
  9.       discovery:
  10.         server-addr: localhost:8848 # nacos注册中心

消费者调用生产者

nacos内置了ribbon，因此调用方式与ribbon相同，下面是nacos提供的调用模板：

  1. @SpringBootApplication
  2. @EnableDiscoveryClient
  3. public class NacosConsumerApplication {
  5.     @LoadBalanced
  6.     @Bean
  7.     public RestTemplate restTemplate() {
  8.         return new RestTemplate();
  9.     }
  11.     public static void main(String[] args) {
  12.         SpringApplication.run(NacosConsumerApplication.class, args);
  13.     }
  15.     @RestController
  16.     public class TestController {
  18.         private final RestTemplate restTemplate;
  20.         @Autowired
  21.         public TestController(RestTemplate restTemplate) {this.restTemplate = restTemplate;}
  23.         @RequestMapping(value = "/echo/{str}", method = RequestMethod.GET)
  24.         public String echo(@PathVariable String str) {
  25.             return restTemplate.getForObject("http://service-provider/echo/" + str, String.class);
  26.         }
  27.     }
  28. }

源码访问
nacos-consumer
nacos-provider