Python如何解决secure_filename对中文不支持问题 Python如何解决secure_filename对中

一、最近使用secure_filename发现的问题
二、后面找到了原因
三、解决方案
四、效果展示

前言：最近使用到了secure_filename，然后悲剧的发现中文居然不展示出来，于是我慢慢的debug，终于找到问题了。

一、最近使用secure_filename发现的问题
文件名是中文版的，悲剧的是中文以及其他特殊字符会被省略。

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二、后面找到了原因
原来secure_filename()函数只返回ASCII字符，非ASCII字符会被过滤掉。

【Python如何解决secure_filename对中文不支持问题】
三、解决方案
找到secure_filename(filename)函数，修改它的源代码。

secure_filename(filename)函数源代码：def secure_filename(filename: str) -> str:r"""Pass it a filename and it will return a secure version of it.Thisfilename can then safely be stored on a regular file system and passedto :func:`os.path.join`.The filename returned is an ASCII only stringfor maximum portability.On windows systems the function also makes sure that the file is notnamed after one of the special device files.>>> secure_filename("My cool movie.mov")'My_cool_movie.mov'>>> secure_filename("../../../etc/passwd")'etc_passwd'>>> secure_filename('i contain cool \xfcml\xe4uts.txt')'i_contain_cool_umlauts.txt'The function might return an empty filename.It's your responsibilityto ensure that the filename is unique and that you abort orgenerate a random filename if the function returned an empty one... versionadded:: 0.5:param filename: the filename to secure"""filename = unicodedata.normalize("NFKD", filename)filename = filename.encode("ascii", "ignore").decode("ascii")for sep in os.path.sep, os.path.altsep:if sep:filename = filename.replace(sep, " ")filename = str(_filename_ascii_strip_re.sub("", "_".join(filename.split()))).strip("._")# on nt a couple of special files are present in each folder.We# have to ensure that the target file is not such a filename.In# this case we prepend an underlineif (os.name == "nt"and filenameand filename.split(".")[0].upper() in _windows_device_files):filename = f"_{filename}"return filename

secure_filename(filename)函数修改后的代码：

def secure_filename(filename: str) -> str:r"""Pass it a filename and it will return a secure version of it.Thisfilename can then safely be stored on a regular file system and passedto :func:`os.path.join`.The filename returned is an ASCII only stringfor maximum portability.On windows systems the function also makes sure that the file is notnamed after one of the special device files.>>> secure_filename("My cool movie.mov")'My_cool_movie.mov'>>> secure_filename("../../../etc/passwd")'etc_passwd'>>> secure_filename('i contain cool \xfcml\xe4uts.txt')'i_contain_cool_umlauts.txt'The function might return an empty filename.It's your responsibilityto ensure that the filename is unique and that you abort orgenerate a random filename if the function returned an empty one... versionadded:: 0.5:param filename: the filename to secure"""filename = unicodedata.normalize("NFKD", filename)filename = filename.encode("utf8", "ignore").decode("utf8")# 编码格式改变for sep in os.path.sep, os.path.altsep:if sep:filename = filename.replace(sep, " ")_filename_ascii_add_strip_re = re.compile(r'[^A-Za-z0-9_\u4E00-\u9FBF\u3040-\u30FF\u31F0-\u31FF.-]')filename = str(_filename_ascii_add_strip_re.sub('', '_'.join(filename.split()))).strip('._')# 添加新规则# on nt a couple of special files are present in each folder.We# have to ensure that the target file is not such a filename.In# this case we prepend an underlineif (os.name == "nt"and filenameand filename.split(".")[0].upper() in _windows_device_files):filename = f"_{filename}"return filename

四、效果展示
我们很清楚的看到了效果，目前是支持中文的