fix: 修正上传文件无后缀名引起的bug

xymanager_common/src/main/java/com/shxy/xymanager_common/util/UploadUtils.java

@@ -17,7 +17,10 @@ public class UploadUtils {
      */
     public static String upload(MultipartFile file, String path) throws IOException {
         String fileName = file.getOriginalFilename();
-        String newName = MyDateUtils.dateTime() + "_upd_" + UUID.randomUUID().toString().replace("-", "").substring(0, 13) + fileName.substring(fileName.indexOf("."));
+        String newName = MyDateUtils.dateTime() + "_upd_" + UUID.randomUUID().toString().replace("-", "").substring(0, 13);
+        if (fileName.contains(".")) {
+            newName = newName + fileName.substring(fileName.indexOf("."));
+        }
         File saveFile = new File(path);
         if (!saveFile.exists()) {
             boolean mkdirs = saveFile.mkdirs();