结合requests的post请求进行cherrypy文件上传

Question

我在用Python的requests库发送POST请求，同时搭配cherrypy服务器上传文件时遇到了麻烦。

这是cherrypy服务器端的代码：

@cherrypy.expose
def upload(self, myFile=None):
    out = """<html>
    <body>
    myFile length: %s<br />
    myFile filename: %s<br />
    myFile mime-type: %s
    </body>
    </html>"""

    size = 0
    allData=''
    logging.info('myfile: ' + str(myFile))
    while True:
            data = myFile.file.read(8192)
            allData+=data
            if not data:
                    break
            size += len(data)
    savedFile=open(myFile.filename, 'wb')
    logging.info('writing file: ' + myFile.filename)
    savedFile.write(allData)
    savedFile.close()
    return out % (size, myFile.filename, myFile.type)

而客户端（目前）只是一个简单的Python requests调用： testfile = open('testfile', 'r') request = requests.post("http://:8088/upload/", files={'myFile': testfile})

不幸的是，我对这两个框架的经验不多，所以我在想问题出在哪里。当我执行这个代码时，myFile变量没有被填充（我甚至不确定它是否应该被填充），而且我也不太清楚cherrypy应该如何接收这个文件。任何帮助都非常感谢！

附注：我收到的错误信息：

File "/usr/lib/pymodules/python2.7/cherrypy/_cprequest.py", line 656, in respond
response.body = self.handler()
File "/usr/lib/pymodules/python2.7/cherrypy/lib/encoding.py", line 188, in __call__
self.body = self.oldhandler(*args, **kwargs)
File "/usr/lib/pymodules/python2.7/cherrypy/_cpdispatch.py", line 34, in __call__
return self.callable(*self.args, **self.kwargs)
File "/usr/bin/apt-repo", line 194, in upload
data = myFile.file.read(8192)
AttributeError: 'NoneType' object has no attribute 'file'

10.136.26.168 - - [25/Mar/2013:15:51:37] "POST /upload/ HTTP/1.1" 500 1369 "" "python-    requests/0.8.2"

所以我尝试用默认示例来做这个。以下是我对上传方法所做的修改：

@cherrypy.expose
def upload(self, myFile=None):
    out = """<html>
    <body>
        myFile length: %s<br />
        myFile filename: %s<br />
        myFile mime-type: %s
    </body>
    </html>"""

    # 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)
    print out % (size, myFile.filename, myFile.content_type)
    return out % (size, myFile.filename, myFile.content_type)
"""

非常基础，直接来自cherrypy的文档。

这是我在客户端所做的：

jlsookiki@justin1:~$ ls -lh bnt-beapi_1.9.6_amd64.deb 
-rw-r--r-- 1 jlsookiki users 30K Mar 26 11:20 bnt-beapi_1.9.6_amd64.deb
jlsookiki@justin1:~$ python
>>> import requests
>>> files = open('bnt-beapi_1.9.6_amd64.deb', 'rb')
>>> url = "http://0.0.0.0:8089/upload"
>>> r = requests.post(url, files={'myFile': files})
>>> print r.text
 <html>
        <body>
            myFile length: 0<br />
            myFile filename: bnt-beapi_1.9.6_amd64.deb<br />
            myFile mime-type: application/x-debian-package
        </body>
 </html>

出于某种原因，文件实际上没有被发送过来，也没有被读取。有人知道这是为什么吗？

error handling cherryPy web development client-server communication http server file upload post request requests

结合requests的post请求进行cherrypy文件上传

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