转载自：
http://long.objectis.net/wanglaoriji/yongpython-shixianshangzhuanwenjiangongneng
环境 Apache + mod_python
如文件小可以采用这个方式
import os
def form():
return """
<html><body>
<form enctype="multipart/form-data" action="./upload" method="post">
<p>File: <input type="file" name="file"></p>
<p><input type="submit" value="Upload"></p>
</form>
</body></html>
"""
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 """
<html><body>
<p>%s</p>
<p><a href="./form">Upload another file</a></p>
</body></html>
""" % message
如文件大时,可以分块上传,现在是改良方式
import os
def form():
return """
<html><body>
<form enctype="multipart/form-data" action="./upload" method="post">
<p>File: <input type="file" name="file"></p>
<p><input type="submit" value="Upload"></p>
</form>
</body></html>
"""
# Generator to buffer file chunks
def fbuffer(f, chunk_size=10000):
while True:
chunk = f.read(chunk_size)
if not chunk: break
yield chunk
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')
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 """
<html><body>
<p>%s</p>
<p><a href="./form">Upload another file</a></p>
</body></html>
""" % message
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