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使用httplib的POST二進(jìn)制數(shù)據(jù)會(huì)導(dǎo)致Unicode異常

Python

湖上湖 2021-04-04 15:07:13

當(dāng)我嘗試使用urllib2發(fā)送圖像時(shí)，發(fā)生UnicodeDecodeError異常。HTTP Post正文：f = open(imagepath, "rb")binary = f.read()mimetype, devnull = mimetypes.guess_type(urllib.pathname2url(imagepath))body = """Content-Length: {size}Content-Type: {mimetype}{binary}""".format(size=os.path.getsize(imagepath), mimetype=mimetype, binary=binary)request = urllib2.Request(url, body, headers)opener = urllib2.build_opener(urllib2.HTTPSHandler(debuglevel=1))response = opener.open(request)print response.read()追溯： response = opener.open(request) File "/usr/local/lib/python2.7/urllib2.py", line 404, in open response = self._open(req, data) File "/usr/local/lib/python2.7/urllib2.py", line 422, in _open '_open', req) File "/usr/local/lib/python2.7/urllib2.py", line 382, in _call_chain result = func(*args) File "/usr/local/lib/python2.7/urllib2.py", line 1222, in https_open return self.do_open(httplib.HTTPSConnection, req) File "/usr/local/lib/python2.7/urllib2.py", line 1181, in do_open h.request(req.get_method(), req.get_selector(), req.data, headers) File "/usr/local/lib/python2.7/httplib.py", line 973, in request self._send_request(method, url, body, headers) File "/usr/local/lib/python2.7/httplib.py", line 1007, in _send_request self.endheaders(body) File "/usr/local/lib/python2.7/httplib.py", line 969, in endheaders self._send_output(message_body) File "/usr/local/lib/python2.7/httplib.py", line 827, in _send_output msg += message_body File "/home/usertmp/biogeek/lib/python2.7/encodings/utf_8.py", line 16, in decode return codecs.utf_8_decode(input, errors, True)UnicodeDecodeError: 'utf8' codec can't decode byte 0xff in position 49: invalid start bytepython版本2.7.5有人知道解決方案嗎？

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1 回答

長(zhǎng)風(fēng)秋雁

TA貢獻(xiàn)1757條經(jīng)驗(yàn) 獲得超7個(gè)贊

您正在嘗試發(fā)送包含標(biāo)題和內(nèi)容的正文。如果要發(fā)送內(nèi)容類型和內(nèi)容長(zhǎng)度，則需要在標(biāo)題中而不是在正文中進(jìn)行：

headers = {'Content-Type': mimetype, 'Content-Length', str(size)}

request = urllib2.Request(url, data=binary, headers=headers)

如果您未設(shè)置Content-Length標(biāo)頭，則會(huì)自動(dòng)將其設(shè)置為 data

關(guān)于您的錯(cuò)誤：它正在發(fā)生

msg += message_body

僅當(dāng)這兩個(gè)字符串之一為unicode，而另一個(gè)str包含時(shí)\xff，才可能發(fā)生此錯(cuò)誤，因?yàn)樵谶@種情況下，后者會(huì)使用來(lái)自動(dòng)轉(zhuǎn)換為unicode sys.getdefaultencoding()。

我的最終猜測(cè)是：message_body這是您的data，它是一個(gè)str，包含在\xff某處。msg是什么東西已經(jīng)傳遞到前面的HttpConnection，即頭，他們都是unicode的，因?yàn)槟阋床捎玫氖荱nicode在你的頭部至少一個(gè)鍵（值轉(zhuǎn)換為str更早），或已導(dǎo)入unicode_literals的__futures__。

反對(duì) 回復(fù) 2021-04-06