如文件小可以采用这个方式import osdef form(): return
"""\
enctype="multipart/form-data" action="./upload"
method="post">
File:
name="file">
type="submit"
value="Upload">
"""def
upload(req): try: # Windows needs stdio set for binary mode. import
msvcrt msvcrt.setmode (0, os.O_BINARY) # stdin = 0 msvcrt.setmode
(1, os.O_BINARY) # stdout = 1 except ImportError: pass # A nested
FieldStorage instance holds the file fileitem = req.form['file'] #
Test if the file was uploaded if fileitem.filename: # strip leading
path from file name to avoid directory traversal attacks fname =
os.path.basename(fileitem.filename) # build absolute path to files
directory dir_path = os.path.join(os.path.dirname(req.filename),
'files') open(os.path.join(dir_path, fname),
'wb').write(fileitem.file.read()) message = 'The file "%s" was
uploaded successfully' % fname else: message = 'No file was
uploaded' return
"""\
%s
href="./form">Upload another
file
"""
% message如文件大时,可以分块上传,现在是改良方式import osdef form(): return
"""\
enctype="multipart/form-data" action="./upload"
method="post">
File:
name="file">
type="submit"
value="Upload">
"""#
Generator to buffer file chunksdef fbuffer(f, chunk_size=10000):
while True: chunk = f.read(chunk_size) if not chunk: break yield
chunkdef upload(req): try: # Windows needs stdio set for binary
mode. import msvcrt msvcrt.setmode (0, os.O_BINARY) # stdin = 0
msvcrt.setmode (1, os.O_BINARY) # stdout = 1 except ImportError:
pass # A nested FieldStorage instance holds the file fileitem =
req.form['file'] # Test if the file was uploaded if
fileitem.filename: # strip leading path from file name to avoid
directory traversal attacks fname =
os.path.basename(fileitem.filename) # build absolute path to files
directory dir_path = os.path.join(os.path.dirname(req.filename),
'files') f = open(os.path.join(dir_path, fname), 'wb', 10000) #
Read the file in chunks for chunk in fbuffer(fileitem.file):
f.write(chunk) f.close() message = 'The file "%s" was uploaded
successfully' % fname else: message = 'No file was uploaded' return
"""\
%s
href="./form">Upload another
file
"""
% message
