我在使用 cherrypy 3.2.4 上传文件时遇到问题。 ( python 2.7) 我无法获取上传文件的原始数据。我试图调试以找到如何从响应中获取数据值但没有成功。有人知道如何解决这个问题吗？
彼得
这是我使用的代码:
def index(self):
return """
<html><body>
<h2>Upload a file</h2>
<form action="upload" method="post" enctype="multipart/form-data">
filename: <input type="file" name="myFile" /><br />
<input type="submit" />
</form>
<h2>Download a file</h2>
<a href='download'>This one</a>
</body></html>
"""
index.exposed = True
def upload(self, myFile):
out = """<html>
<body>
myFile length: %s<br />
myFile filename: %s<br />
myFile mime-type: %s
</body>
</html>"""
cherrypy.log('-'*60)
cherrypy.log('0: ' + str(dir(myFile)))
cherrypy.log('-'*60)
cherrypy.log('2: ' + str(dir(cherrypy.request.headers)))
cherrypy.log('-'*60)
cherrypy.log('4: ' + str(dir(cherrypy.request.rfile)))
cherrypy.log('-'*60)
cherrypy.log('6: ' + str(cherrypy.request.rfile.readline))
cherrypy.log('-'*60)
cherrypy.log('8: ' + str(cherrypy.request.rfile.read()))
cherrypy.log('-'*60)
cherrypy.log('-'*60)
cherrypy.log('-'*60)
# Although this just counts the file length, it demonstrates
# how to read large files in chunks instead of all at once.
# CherryPy reads the uploaded file into a temporary file;
# myFile.file.read reads from that.
size = 0
while True:
data = myFile.file.read(8192)
if not data:
break
size += len(data)
#cherrypy.log('myFile: %s' % str(dir(myFile)))
#cherrypy.log('File: %s' % str(myFile.read_into_file))
#myFile.read_into_file('a.txt')
return out % (size, myFile.filename, myFile.content_type)
upload.exposed = True
这是输出:
[27/Jul/2014:13:38:32] 0: ['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__iter__', '__module__', '__new__', '__next__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'attempt_charsets', 'boundary', 'charset', 'content_type', 'default_content_type', 'default_proc', 'file', 'filename', 'fp', 'from_fp', 'fullvalue', 'headers', 'length', 'make_file', 'maxrambytes', 'name', 'next', 'params', 'part_class', 'parts', 'process', 'processors', 'read', 'read_headers', 'read_into_file', 'read_lines_to_boundary', 'readline', 'readlines', 'type', 'value']
[27/Jul/2014:13:38:32] 2: ['__class__', '__cmp__', '__contains__', '__delattr__', '__delitem__', '__dict__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__init__', '__iter__', '__le__', '__len__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__','__weakref__', 'clear', 'copy', 'elements', 'encode', 'encode_header_items', 'encodings', 'fromkeys', 'get', 'has_key', 'items', 'iteritems', 'iterkeys', 'itervalues', 'keys', 'output', 'pop', 'popitem', 'protocol', 'setdefault', 'update', 'use_rfc_2047', 'values', 'viewitems', 'viewkeys', 'viewvalues']
[27/Jul/2014:13:38:32] 4: ['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__iter__', '__module__', '__new__', '__next__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'close', 'read', 'readline', 'readlines', 'remaining', 'rfile']
[27/Jul/2014:13:38:32] 6: <bound method KnownLengthRFile.readline of <cherrypy.wsgiserver.wsgiserver2.KnownLengthRFile object at 0x0000000002FF8D30>>
[27/Jul/2014:13:38:32] 8:
[27/Jul/2014:13:38:32] "POST /upload HTTP/1.1" 200 172 "http://localhost:8080/" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0"
已编辑:
我尝试并找到了简单的解决方案:
def upload(self, myFile):
lcHDRS = {}
for key, val in cherrypy.request.headers.iteritems():
lcHDRS[key.lower()] = val
incomingBytes = int(lcHDRS['content-length'])
content = myFile.file.read(incomingBytes)
file = open ('./upload/' + file.filename,"wb")
file.write(content)
file.close()
return 'File was uploaded...'
最佳答案
首先删除您的 cherrypy 日志语句。其中第 6 行是错误的。还将这些行添加到您的 while 循环中...
size = 0
# NEW LINE
all_data = bytearray()
while True:
data = myFile.file.read(8192)
# NEW LINE
all_data += data
if not data:
break
size += len(data)
# to save the file use this
saved_file=open(myFile.filename, 'wb')
saved_file.write(all_data)
saved_file.close()
return out % (size, myFile.filename, myFile.content_type)
现在您只能获得前 8192 个字节。
希望这对您有所帮助!
关于python - Cherrypy:如何从上传的文件中获取原始数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24980689/