已执行推荐修复，Coverity仍触发Java文件系统路径操作告警求助

即使执行了推荐的修复操作，Synopsis Coverity仍会触发Java代码中的Filesystem path、filename或URI manipulation告警。此前参考过两篇针对该问题的Stack Overflow解决方案，但这些方案并未彻底消除当前代码中的告警。

原触发告警的代码 #

public String deleteFiles(List<String> filesToDelete){
    filesToDelete.forEach(file -> {
        logger.info("Deleting file " + file);
        Path path = Paths.get(file).normalize();
        new File(path).delete();
    });
}

已修复但仍触发告警的代码 #

private static boolean doesFilenameTryPatternTraversal(String filename) {
  return Pattern.compile("\\.\\.|\\|/").matcher(filename).find();
}

private void deleteFiles(List<String> filesToDelete) {
  filesToDelete.forEach(file -> {
    logger.info("Deleting file {}", file);
    if (doesFilenameTryPatternTraversal(file)) {
      throw new RuntimeException(
          "filename: '" + file + "' attempting to access a file outside of expected directory.");
    }

    Path canonicalPath = basePath.resolve(Paths.get(file).toAbsolutePath().normalize());
    if (canonicalPath.startsWith(basePath.toString())) {
      try {
        Files.delete(canonicalPath);
      } catch (IOException e) {
        throw new RuntimeException("Could not delete file '" + file + "'.", e);
      }
    } else {
      throw new SecurityException("File '" + file + "' is outside the allowed directory");
    }
  });
}

内容的提问来源于stack exchange，提问作者Chris