Python请求POST到java REST接口MultipartFile参数不存在

8 月，2 周 Questions & Answers 676

我在这里搜索过，也在网上搜索过其他地方，似乎找不到答案，我认为这是我的一个简单错误。基本上，我希望通过发出Python请求将文件从一台机器传输到另一台机器。将请求发布到远程计算机上的Java REST接口。Java方面如下所示：

@ApiOperation(value = "Binary file transfer", nickname = "Binary file transfer")
@ApiResponses(value = { 
        @ApiResponse(code = 200, message = "Success", response = HttpMessageInformationReturnDataBean.class),
        @ApiResponse(code = 404, message = "Not Found")}) 
@RequestMapping(value = "/vm/{version}/uploadbinfile", method = RequestMethod.POST)
 public String handleFileUpload(@RequestParam("binaryFile") MultipartFile file) {   
    if (!file.isEmpty()) 
    {
        try
        { ... the code that handles the transfer

在Python方面，该方法如下所示：

   def xfer_trm_binaries(self):
        params = {"file": ('binaryFile',os.path.basename('TRMServer.jar')),
              "folder": os.path.dirname(self.dest_temp_path),
              "submit": "Submit"}
        url = self.form_url("/vm/v1/uploadbinfile", self.trm_server_ip_address, self.vrm_server_port)
        header=self.form_header(self.vrm_key)
        header['Content-Type'] = 'multipart/file-data; boundary=randomboundarysequence'
        header['enctype'] = "multipart/file-data"
        print 'Send :' + url
        binfile = self.local_jar_path+'TRMServer.jar'
        with open(binfile, 'rb') as mfile:
            try:
                result = requests.post(url, headers=header,
                                       data=params, files={'file': mfile}, verify=False)
            except Exception:

在那里组装的标头如下所示：

{'Content-Type': 'multipart/file-data; boundary=randomboundarysequence', 'Accept': 'application/json', 'Authorization': u'Bearer 8b2b6e53-9008-44b7-9d34-b5ecb9659250', 'enctype': 'multipart/file-data'}

请求已发送，但响应始终为400错误，因为它抱怨缺少MultipartFile参数“binaryFile”：

'{"timestamp":1488597880207,"status":400,"error":"Bad Request","exception":"org.springframework.web.bind.MissingServletRequestParameterException","message":"Required MultipartFile parameter \\'binaryFile\\' is not present","path":"/vm/v1/uploadbinfile"}'

我曾尝试向请求的参数和头添加一个“name”值，但它总是返回400代码。有人知道我可能做错了什么吗

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Python请求POST到java REST接口MultipartFile参数不存在

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