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我正在尝试使用由我们的一位开发人员创建的 Web 服务，该服务允许我们在某些限制内将文件上传到系统中。

使用 SUDS，我得到以下信息：

Suds ( https://fedorahosted.org/suds/ ) version: 0.4 GA  build: R699-20100913

Service ( ConnectToEFS ) tns="http://tempuri.org/"
   Prefixes (3)
      ns0 = "http://schemas.microsoft.com/2003/10/Serialization/"
      ns1 = "http://schemas.microsoft.com/Message"
      ns2 = "http://tempuri.org/"
   Ports (1):
      (BasicHttpBinding_IConnectToEFS)
         Methods (2):
            CreateContentFolder(xs:string FileCode, xs:string FolderName, xs:string ContentType, xs:string MetaDataXML, )
            UploadFile(ns1:StreamBody FileByteStream, )
         Types (4):
            ns1:StreamBody
            ns0:char
            ns0:duration
            ns0:guid

我使用 UploadFile 的方法如下：

def webserviceUploadFile(self, targetLocation, fileName, fileSource):
    fileSource = './test_files/' + fileSource
    ntlm = WindowsHttpAuthenticated(username=uname, password=upass)
    client = Client(webservice_url, transport=ntlm)
    client.set_options(soapheaders={'TargetLocation':targetLocation, 'FileName': fileName})
    body = client.factory.create('AIRDocument')
    body_file = open(fileSource, 'rb')
    body_data = body_file.read()
    body.FileByteStream = body_data
    return client.service.UploadFile(body)

运行它会得到以下结果：

Traceback (most recent call last):
  File "test_cases.py", line 639, in test_upload_file_invalid_extension
    result_string = self.HM.webserviceUploadFile('9999', 'AD-1234-5424__44.exe',
 'test_data.pdf')
  File "test_cases.py", line 81, in webserviceUploadFile
    return client.service.UploadFile(body)
  File "build\bdist.win32\egg\suds\client.py", line 542, in __call__
    return client.invoke(args, kwargs)
  File "build\bdist.win32\egg\suds\client.py", line 595, in invoke
    soapenv = binding.get_message(self.method, args, kwargs)
  File "build\bdist.win32\egg\suds\bindings\binding.py", line 120, in get_message
    content = self.bodycontent(method, args, kwargs)
  File "build\bdist.win32\egg\suds\bindings\document.py", line 63, in bodycontent
    p = self.mkparam(method, pd, value)
  File "build\bdist.win32\egg\suds\bindings\document.py", line 105, in mkparam
    return Binding.mkparam(self, method, pdef, object)
  File "build\bdist.win32\egg\suds\bindings\binding.py", line 287, in mkparam
    return marshaller.process(content)
  File "build\bdist.win32\egg\suds\mx\core.py", line 62, in process
    self.append(document, content)
  File "build\bdist.win32\egg\suds\mx\core.py", line 75, in append
    self.appender.append(parent, content)
  File "build\bdist.win32\egg\suds\mx\appender.py", line 102, in append
    appender.append(parent, content)
  File "build\bdist.win32\egg\suds\mx\appender.py", line 243, in append
    Appender.append(self, child, cont)
  File "build\bdist.win32\egg\suds\mx\appender.py", line 182, in append
    self.marshaller.append(parent, content)
  File "build\bdist.win32\egg\suds\mx\core.py", line 75, in append
    self.appender.append(parent, content)
  File "build\bdist.win32\egg\suds\mx\appender.py", line 102, in append
    appender.append(parent, content)
  File "build\bdist.win32\egg\suds\mx\appender.py", line 198, in append
    child.setText(tostr(content.value))
  File "build\bdist.win32\egg\suds\sax\element.py", line 251, in setText
    self.text = Text(value)
  File "build\bdist.win32\egg\suds\sax\text.py", line 43, in __new__
    result = super(Text, cls).__new__(cls, *args, **kwargs)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 10: ordinal
 not in range(128)

经过大量研究并与网络服务的开发人员交谈后，我将 body_data = body_file.read() 修改为 body_data = body_file.read().decode("UTF-8") ，这让我遇到了这个错误：

Traceback (most recent call last):
  File "test_cases.py", line 639, in test_upload_file_invalid_extension
    result_string = self.HM.webserviceUploadFile('9999', 'AD-1234-5424__44.exe', 'test_data.pdf')
  File "test_cases.py", line 79, in webserviceUploadFile
    body_data = body_file.read().decode("utf-8")
  File "C:\python27\lib\encodings\utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xe2 in position 10: invalid
continuation byte

这没什么帮助。

在对该问题进行了更多研究后，我尝试将 'errors='ignore'' 添加到 UTF-8 编码中，结果如下：

<TransactionDescription>Error in INTL-CONF_France_PROJ_MA_126807.docx: An exception has been thrown when reading the stream.. Inner Exception: System.Xml.XmlException: The byte 0x03 is not valid at this location.  Line 1, position 318.
    at System.Xml.XmlExceptionHelper.ThrowXmlException(XmlDictionaryReader reader, String res, String arg1, String arg2, String arg3)
    at System.Xml.XmlUTF8TextReader.Read()
    at System.ServiceModel.Dispatcher.StreamFormatter.MessageBodyStream.Exhaust(XmlDictionaryReader reader)
    at System.ServiceModel.Dispatcher.StreamFormatter.MessageBodyStream.Read(Byte[] buffer, Int32 offset, Int32 count). Source: System.ServiceModel</TransactionDescription>

这几乎让我不知道该怎么做。根据 web 服务的结果堆栈跟踪，它看起来需要 UTF-8，但如果没有 Python 或 SUDS 合适，或者忽略编码中的问题，我似乎无法将它传递给 web 服务。我正在使用的系统只接收 MicroSoft 办公类型文件（doc、xls 等）、PDF 和 TXT 文件，因此不能选择使用我对编码有更多控制权的东西。我还尝试检测示例 PDF 和示例 DOCX 使用的编码，但使用它建议的编码（Latin-1、ISO8859-x 和几个 Windows XXXX）都被 Python 和 SUDS 接受，但不被 web 服务接受。

另请注意，在显示的示例中，它最常将测试引用到无效扩展。这个错误甚至适用于成功上传的测试，这是唯一一次真正显示最终堆栈跟踪。

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1 回答 1

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您可以使用它base64.b64encode(body_file.read())，这将返回 base64 字符串值。所以你的请求变量必须是一个字符串。

于 2012-07-18T08:47:10.453 回答