add 服务注册与服务发现

spring-cloud-hello-world/hello-consumer-feign/src/main/java/com/duanledexian/spring/cloud/producer/api/IHelloApi.java

@@ -2,6 +2,7 @@ package com.duanledexian.spring.cloud.producer.api;
 
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 
 /**
  * The interface Hello api.
@@ -18,6 +19,6 @@ public interface IHelloApi {
      * @return the string
      */
     @GetMapping("/api/v1/sayHello")
-    String sayHello(String name);
+    String sayHello(@RequestParam("name") String name);
 
 }

spring-cloud-hello-world/hello-consumer/src/main/java/com/duanledexian/spring/cloud/producer/controller/HomeController.java

@@ -27,7 +27,7 @@ public class HomeController {
     @GetMapping("/sayHello")
     public String sayHello(String name) {
         name += "!";
-        ServiceInstance instance = client.choose("service-consumer");
+        ServiceInstance instance = client.choose("service-producer");
         String url = "http://" + instance.getHost() + ":" + instance.getPort() + "/api/v1/sayHello?name=" + name;
         return restTemplate.getForObject(url, String.class);
     }