SpringCloud服务的发现与调用详解

    <parent>
        <groupId>com.cxy965</groupId>
        <artifactId>parent</artifactId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../parent/pom.xml</relativePath>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
    </dependencies>

@EnableEurekaClient
@SpringBootApplication
@RestController
public class ProviderApplication {
    public static void main(String[] args) {
        SpringApplication.run(ProviderApplication.class, args);
    }
    @GetMapping("/hello")
    public String hello(String name) {
       return "Hello "+name;
    }
}

@EnableEurekaClient
@SpringBootApplication
@RestController
public class ConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class, args);
    }
    @Bean
    RestTemplate restTemplate() {
        return new RestTemplate();
    }
    @Autowired
    DiscoveryClient discoveryClient;
    @Autowired
    RestTemplate restTemplate;
    @GetMapping("/hello")
    public String hello(String name) {
        List<ServiceInstance> list = discoveryClient.getInstances("provider");
        ServiceInstance instance = list.get(0);
        String host = instance.getHost();
        int port = instance.getPort();
        String returnInfo = restTemplate.getForObject("http://" + host + ":" + port + "/hello?name={1}", String.class, name);
        return returnInfo;
    }
}