在我的项目中,创建了一组文件并将其打包为 ZIP 存档,以便在 Android 手机上使用。 Android 应用程序打开此类 ZIP 文件以读取初始数据,然后将其工作结果存储到相同的 ZIP 中。我无法访问上述 Android 应用程序的源代码和之前生成 zip 文件的旧脚本(实际上,我不知道旧 ZIP 文件是如何创建的)。但是 ZIP 存档的结构是已知的,我已经编写了新的 python 脚本来制作相同的文件。
我遇到了以下问题:我的脚本生成的 ZIP 文件无法被 Android App 打开(关于不正确的文件结构欠款的错误消息),但是如果我解压所有内容并将其打包回新的 ZIP 文件WinZIP、7-Zip 或“发送到 -> 压缩 (zipped) 文件夹”(在 Windows 7 中)文件的同名文件正常处理在电话上(这让我得出结论,问题不在 Android 应用程序中)。
ZIP打包文件夹的代码片段如下
# make zip
try:
with zipfile.ZipFile(prefix + '.zip', 'w') as zipf:
for root, dirs, files in os.walk(prefix):
for file in files:
zipf.write(os.path.join(root, file))
# remove dir, that was packed
shutil.rmtree(prefix)
# Report about resulting
print('File ' + prefix + '.zip was created')
except:
print('Unexpected error occurred while creating file ' + prefix + '.zip')
在我注意到文件未压缩后,我添加了压缩选项:
zipfile.ZipFile(prefix + '.zip', 'w', zipfile.ZIP_DEFLATED)
但这并没有解决我的问题和设置 True
allowZip64
的值也没有改变这种情况。
顺便说一句,用 zipfile.ZIP_DEFLATED
生成的 ZIP 文件对于相同的存档内容,比 Windows 生成的 ZIP 文件小约 5 KB,比 7-Zip 的结果小约 14 KB。同时,我可以打开所有这些 ZIP 文件,以便通过 7-Zip 和 Windows 资源管理器进行视觉比较。
所以我有三个相关的问题:
1) 是什么导致我的脚本出现这种奇怪的行为 zipfile
?
2) 我还能如何影响 zipfile
?
3) 如何检查使用 zipfile
创建的 ZIP 文件查找可能的结构问题或确保没有问题?
当然,如果我不得不放弃使用zipfile
我可以使用外部存档器(例如 7-zip)进行文件打包,但如果存在的话,我想找到一个优雅的解决方案。
更新:
为了检查用 zipfile
创建的 ZIP 文件的内容我做了以下内容
# make zip
flist = []
try:
with zipfile.ZipFile(prefix + '.zip', 'w', zipfile.ZIP_DEFLATED) as zipf:
for root, dirs, files in os.walk(prefix):
for file in files:
zipf.write(os.path.join(root, file))
# Store item in the list
flist.append(os.path.join(root, file).replace("\\","/"))
# remove dir, that was packed
shutil.rmtree(prefix)
# Report about resulting
print('File ' + prefix + '.zip was created')
except:
print('Unexpected error occurred while creating file ' + prefix + '.zip')
# Check of zip
with closing(zipfile.ZipFile(prefix + '.zip')) as zfile:
for info in zfile.infolist():
print(info.filename + \
' (extra = ' + str(info.extra) + \
'; compress_type = ' + ('ZIP_DEFLATED' if info.compress_type == zipfile.ZIP_DEFLATED else 'NOT ZIP_DEFLATED') + \
')')
# remove item from list
if info.filename in flist:
flist.remove(info.filename)
else:
print(info.filename + ' is unexpected item')
print('Number of items that were missed:')
print(len(flist))
并在输出中看到以下结果:
File en_US_00001.zip was created
en_US_00001/en_US_00001_0001/en_US_00001_0001_big.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0001/en_US_00001_0001_info.xml (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0001/en_US_00001_0001_small.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0001/en_US_00001_0001_source.pkl (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0001/en_US_00001_0001_source.tex (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0001/en_US_00001_0001_user.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0002/en_US_00001_0002_big.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0002/en_US_00001_0002_info.xml (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0002/en_US_00001_0002_small.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0002/en_US_00001_0002_source.pkl (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0002/en_US_00001_0002_source.tex (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0002/en_US_00001_0002_user.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0003/en_US_00001_0003_big.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0003/en_US_00001_0003_info.xml (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0003/en_US_00001_0003_small.png (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0003/en_US_00001_0003_source.pkl (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0003/en_US_00001_0003_source.tex (extra = b''; compress_type = ZIP_DEFLATED)
en_US_00001/en_US_00001_0003/en_US_00001_0003_user.png (extra = b''; compress_type = ZIP_DEFLATED)
Number of items that were missed:
0
因此,所有内容都被写入,然后被读取,但问题仍然存在 - 是否已写入所有必要的内容?例如。哈罗德在评论中谈到了相对路径......也许,这是答案的关键
更新 2
当我替换 zipfile
时通过使用外部 7-Zip 代码
# make zip
subprocess.call(["7z.exe","a",prefix + ".zip", prefix])
shutil.rmtree(prefix)
# Check of zip
with closing(zipfile.ZipFile(prefix + '.zip')) as zfile:
for info in zfile.infolist():
print(info.filename)
print(' (extra = ' + str(info.extra) + '; compress_type = ' + str(info.compress_type) + ')')
print('Values for compress_type:')
print(str(zipfile.ZIP_DEFLATED) + ' = ZIP_DEFLATED')
print(str(zipfile.ZIP_STORED) + ' = ZIP_STORED')
产生以下结果
Creating archive en_US_00001.zip
Compressing en_US_00001\en_US_00001_0001\en_US_00001_0001_big.png
Compressing en_US_00001\en_US_00001_0001\en_US_00001_0001_info.xml
Compressing en_US_00001\en_US_00001_0001\en_US_00001_0001_small.png
Compressing en_US_00001\en_US_00001_0001\en_US_00001_0001_source.pkl
Compressing en_US_00001\en_US_00001_0001\en_US_00001_0001_source.tex
Compressing en_US_00001\en_US_00001_0001\en_US_00001_0001_user.png
Compressing en_US_00001\en_US_00001_0002\en_US_00001_0002_big.png
Compressing en_US_00001\en_US_00001_0002\en_US_00001_0002_info.xml
Compressing en_US_00001\en_US_00001_0002\en_US_00001_0002_small.png
Compressing en_US_00001\en_US_00001_0002\en_US_00001_0002_source.pkl
Compressing en_US_00001\en_US_00001_0002\en_US_00001_0002_source.tex
Compressing en_US_00001\en_US_00001_0002\en_US_00001_0002_user.png
Compressing en_US_00001\en_US_00001_0003\en_US_00001_0003_big.png
Compressing en_US_00001\en_US_00001_0003\en_US_00001_0003_info.xml
Compressing en_US_00001\en_US_00001_0003\en_US_00001_0003_small.png
Compressing en_US_00001\en_US_00001_0003\en_US_00001_0003_source.pkl
Compressing en_US_00001\en_US_00001_0003\en_US_00001_0003_source.tex
Compressing en_US_00001\en_US_00001_0003\en_US_00001_0003_user.png
Everything is Ok
en_US_00001/
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00Faf\xd2Y\xf9\xd1\x01Faf\xd2Y\xf9\xd1\x01%\xc9c\xd2Y\xf9\xd1\x01'; compress_type = 0)
en_US_00001/en_US_00001_0001/
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xbe(e\xd2Y\xf9\xd1\x01\xbe(e\xd2Y\xf9\xd1\x016\xf0c\xd2Y\xf9\xd1\x01'; compress_type = 0)
en_US_00001/en_US_00001_0001/en_US_00001_0001_big.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00G\x17d\xd2Y\xf9\xd1\x01G\x17d\xd2Y\xf9\xd1\x01G\x17d\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_info.xml
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00X>d\xd2Y\xf9\xd1\x01X>d\xd2Y\xf9\xd1\x01X>d\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_small.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00z\x8cd\xd2Y\xf9\xd1\x01ied\xd2Y\xf9\xd1\x01ied\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_source.pkl
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\x8b\xb3d\xd2Y\xf9\xd1\x01\x8b\xb3d\xd2Y\xf9\xd1\x01\x8b\xb3d\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_source.tex
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xad\x01e\xd2Y\xf9\xd1\x01\xad\x01e\xd2Y\xf9\xd1\x01\xad\x01e\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_user.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xbe(e\xd2Y\xf9\xd1\x01\xbe(e\xd2Y\xf9\xd1\x01\xbe(e\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0002/
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x005:f\xd2Y\xf9\xd1\x015:f\xd2Y\xf9\xd1\x01\xcfOe\xd2Y\xf9\xd1\x01'; compress_type = 0)
en_US_00001/en_US_00001_0002/en_US_00001_0002_big.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xe0ve\xd2Y\xf9\xd1\x01\xcfOe\xd2Y\xf9\xd1\x01\xcfOe\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_info.xml
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xf1\x9de\xd2Y\xf9\xd1\x01\xe0ve\xd2Y\xf9\xd1\x01\xe0ve\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_small.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\x02\xc5e\xd2Y\xf9\xd1\x01\x02\xc5e\xd2Y\xf9\xd1\x01\x02\xc5e\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_source.pkl
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\x13\xece\xd2Y\xf9\xd1\x01\x13\xece\xd2Y\xf9\xd1\x01\x13\xece\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_source.tex
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00$\x13f\xd2Y\xf9\xd1\x01$\x13f\xd2Y\xf9\xd1\x01$\x13f\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_user.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x005:f\xd2Y\xf9\xd1\x015:f\xd2Y\xf9\xd1\x015:f\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0003/
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xdf\xc0g\xd2Y\xf9\xd1\x01\xdf\xc0g\xd2Y\xf9\xd1\x01Faf\xd2Y\xf9\xd1\x01'; compress_type = 0)
en_US_00001/en_US_00001_0003/en_US_00001_0003_big.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00W\x88f\xd2Y\xf9\xd1\x01W\x88f\xd2Y\xf9\xd1\x01W\x88f\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_info.xml
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00h\xaff\xd2Y\xf9\xd1\x01h\xaff\xd2Y\xf9\xd1\x01h\xaff\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_small.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\x9b$g\xd2Y\xf9\xd1\x01y\xd6f\xd2Y\xf9\xd1\x01y\xd6f\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_source.pkl
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xacKg\xd2Y\xf9\xd1\x01\xacKg\xd2Y\xf9\xd1\x01\xacKg\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_source.tex
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xce\x99g\xd2Y\xf9\xd1\x01\xce\x99g\xd2Y\xf9\xd1\x01\xce\x99g\xd2Y\xf9\xd1\x01'; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_user.png
(extra = b'\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\xdf\xc0g\xd2Y\xf9\xd1\x01\xdf\xc0g\xd2Y\xf9\xd1\x01\xdf\xc0g\xd2Y\xf9\xd1\x01'; compress_type = 8)
Values for compress_type:
8 = ZIP_DEFLATED
0 = ZIP_STORED
据我了解,最重要的发现是:
- 包含文件夹信息的项目(例如
en_US_00001/
、en_US_00001/en_US_00001_0001/
),这些项目不在我使用zipfile
生成的 ZIP 中 - 文件夹有
compress_type == ZIP_STORED
, 而对于文件compress_type == ZIP_DEFLATED
-
extra
s 有不同的值(生成了很长的字符串)
最佳答案
基于问题更新 2 中列出的差异和来自 other question about zipfile 的示例,我尝试了以下代码将目录添加到 ZIP 文件并检查结果:
# make zip
try:
with zipfile.ZipFile(prefix + '.zip', 'w', zipfile.ZIP_DEFLATED) as zipf:
info = zipfile.ZipInfo(prefix+'\\')
zipf.writestr(info, '')
for root, dirs, files in os.walk(prefix):
for d in dirs:
info = zipfile.ZipInfo(os.path.join(root, d)+'\\')
zipf.writestr(info, '')
for file in files:
zipf.write(os.path.join(root, file))
# remove dir, that was packed
shutil.rmtree(prefix)
# Report about resulting
print('File ' + prefix + '.zip was created')
except:
print('Unexpected error occurred while creating file ' + prefix + '.zip')
# Check zip content
with closing(zipfile.ZipFile(prefix + '.zip')) as zfile:
for info in zfile.infolist():
print(info.filename)
print(' (extra = ' + str(info.extra) + '; compress_type = ' + str(info.compress_type) + ')')
print('Values for compress_type:')
print(str(zipfile.ZIP_DEFLATED) + ' = ZIP_DEFLATED')
print(str(zipfile.ZIP_STORED) + ' = ZIP_STORED')
输出是
File en_US_00001.zip was created
en_US_00001/
(extra = b''; compress_type = 0)
en_US_00001/en_US_00001_0001/
(extra = b''; compress_type = 0)
en_US_00001/en_US_00001_0002/
(extra = b''; compress_type = 0)
en_US_00001/en_US_00001_0003/
(extra = b''; compress_type = 0)
en_US_00001/en_US_00001_0001/en_US_00001_0001_big.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_info.xml
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_small.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_source.pkl
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_source.tex
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0001/en_US_00001_0001_user.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_big.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_info.xml
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_small.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_source.pkl
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_source.tex
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0002/en_US_00001_0002_user.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_big.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_info.xml
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_small.png
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_source.pkl
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_source.tex
(extra = b''; compress_type = 8)
en_US_00001/en_US_00001_0003/en_US_00001_0003_user.png
(extra = b''; compress_type = 8)
Values for compress_type:
8 = ZIP_DEFLATED
0 = ZIP_STORED
在目录名称中添加斜杠(+'\\'
或 +'/'
)似乎是强制性的。
最重要的是 - 现在 ZIP 文件已被 Android 应用程序正确接受。
关于python - Python 中的 zipfile 生成不太正常的 ZIP 文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39013110/