add CORS config; fix /resource/search

Change-Id: I3b6b80cd99b0e72e649e8d53b30f87469640c473
diff --git a/src/main/java/com/g9/g9backend/controller/FileController.java b/src/main/java/com/g9/g9backend/controller/FileController.java
index 7b4e339..313f61e 100644
--- a/src/main/java/com/g9/g9backend/controller/FileController.java
+++ b/src/main/java/com/g9/g9backend/controller/FileController.java
@@ -38,7 +38,7 @@
     @PostMapping
     public ResponseEntity<String> uploadFile(@RequestBody MultipartFile file) {
         // 相对路径(可在资源根路径创建 upload 文件夹)
-        String UPLOAD_DIR = "upload";
+        String UPLOAD_DIR = "D:/nginx/nginx-1.26.2/MCPT";
 
         // 获取原始文件名
         String originalFilename = file.getOriginalFilename();