依赖，因为要书写mvc和feign注解
org.springframework.boot spring-boot-starter-web org.springframework.cloud spring-cloud-starter-feign 1.4.7.RELEASE
添加一个接口，封装了生产者的对应路由和传参
@FeignClient("provider")
public interface ProviderA {
@RequestMapping("/hello")
public Student fun1(@RequestParam("count") Integer count);
}
改造生产者（可选）
让生产者继承这个接口
@RestController
public class HelloController implements ProviderA {
@Override
@RequestMapping("/hello")
public Student fun1(Integer count) {
System.out.println(count);
return new Student("张三", 23);
}
}
改造消费者
依赖
org.springframework.cloud spring-cloud-starter-feign 1.4.7.RELEASE
启动类，启用Feign扫描，指向api包
@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients(basePackages = {"org.example.api.controller"})
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class);
}
@Bean
@LoadBalanced
public RestTemplate restTemplate() {
return new RestTemplate();
}
}
控制器，用Feign替换RestTemplate
@RestController
public class HelloController {
@Autowired
private ProviderA providerA;
private static Integer count = 1;
@RequestMapping("/")
public Student fun1() {
return providerA.fun1(count++);
}
}
测试
全部启动，打开URL：http://localhost:9101/
成功！
