增加测试接口

src/main/java/com/sczx/gateway/controller/TestController.java

@@ -0,0 +1,24 @@
+package com.sczx.gateway.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cloud.client.ServiceInstance;
+import org.springframework.cloud.client.discovery.DiscoveryClient;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+public class TestController {
+    @Autowired
+    private DiscoveryClient discoveryClient;
+
+    @GetMapping("/test")
+    public String test() {
+        List<ServiceInstance> instances = discoveryClient.getInstances("sczx_user");
+        if (instances == null || instances.isEmpty()) {
+            return "No instances found!";
+        }
+        return "Found instance: " + instances.get(0).getUri();
+    }
+}