Question

我正在尝试设置由python脚本处理的文件上载Web表单。当我选择一个文件并单击上传时，它表示没有上传文件。 file对象的fileitem字段为None。该脚本在lighthttpd服务器上运行。

脚本的代码在这里：

#!/usr/bin/env python

import cgi, os
import cgitb
cgitb.enable()

form = cgi.FieldStorage()
# A nested FieldStorage instance holds the file
fileitem = form['filename']
print "----"
print "filename", fileitem.filename
print "file", fileitem.file
print "----"

message = ''
if fileitem.file:
    # It's an uploaded file; count lines
    linecount = 0
    while 1:
        line = fileitem.file.readline()
        if not line: break
        linecount = linecount + 1
    message = linecount

# Test if the file was uploaded
if fileitem.filename:

   # strip leading path from file name to avoid directory traversal attacks
   fn = os.path.basename(fileitem.filename)
   open('/var/cache/lighttpd/uploads/' + fn, 'wb').write(fileitem.file.read())
   message = 'The file "' + fn + '" was uploaded successfully'

else:
  message += 'No file was uploaded'

print """\
Content-Type: text/html\n
<html><body>
<p>%s</p>
</body></html>
""" % (message,)

html文件在这里：

<html>
<head>
<title>RepRap Pinter</title>
</head>
<body>
<H1>RepRap Printer</H1>
<form action="cgi-bin/start_print.py" method="post" encrypt="multipart/form-data">
<p><input type="file" name="filename" id="file"></p>
<p><input type="submit" value="Upload"></p>
</form>
</body>
</html>

输出是：

----
filename None
file None
----
Content-Type: text/html

<html><body>
<p>No file was uploaded</p>
</body></html>

关于文件未被上传的原因的任何想法？

Answer 1

你的问题似乎在这里：

<form ... encrypt="multipart/form-data">

您要查找的属性不是encrypt，而是enctype。由于您缺少正确的参数，因此您的编码不是multipart-formdata，因此会忽略文件上传。

Answer 2

您使用了错误的属性名称：

<form action="cgi-bin/start_print.py" method="post" encrypt="multipart/form-data">

正确的属性是enctype，而不是encrypt：

<form action="cgi-bin/start_print.py" method="post" enctype="multipart/form-data">

cgi python脚本似乎没有从html表单接收上传的文件

2 个答案: