!147 变量filename赋值后未使用

Merge pull request !147 from runphp/N/A

ruoyi-modules/ruoyi-file/src/main/java/com/ruoyi/file/utils/FileUploadUtils.java

@@ -86,10 +86,7 @@ public class FileUploadUtils
      */
     public static final String extractFilename(MultipartFile file)
     {
-        String fileName = file.getOriginalFilename();
-        String extension = getExtension(file);
-        fileName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension;
-        return fileName;
+        return DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + getExtension(file);
     }
 
     private static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException