..

mooctest-site-server/src/main/java/cn/iselab/mooctest/site/service/common/impl/PdfServiceImpl.java

@@ -736,8 +736,10 @@ public class PdfServiceImpl extends BaseService implements PdfService {
             return null;
         }
         List<String> strs=new ArrayList<>();
-        getJavaCode(new File(FileUtils.getUserDirectory()+"/"+FilenameUtils.removeExtension(file.getName())+"/src"),strs);
+        File targetFile=new File(FileUtils.getUserDirectory()+"/"+FilenameUtils.removeExtension(file.getName())+"/src");
+        getJavaCode(targetFile,strs);
         FileUtils.deleteQuietly(file);
+        FileUtils.deleteQuietly(targetFile);
         return strs;
     }