I have used the request-promise module, but the request was not successful. Now I don’t know whether it is a problem with the interface or a problem with my code. Please help me! Thanks!
var rp = require('request-promise');
var form={};
rp({

    method: 'POST',
    uri: 'http://upfiles1.xxx.com/xxx.asmx/Upload',
    //form:form,
    body:form,
    headers: {
        "content-type" : "multipart/form-data",//"application/x-www-form-urlencoded"
        "content-length":form.length
    }
});
提示 Unhandled rejection RequestError: Error: Argument error, options.body.TypeError: first argument must be a string or Buffer
我现在最有疑问的就是我要post过去的数据那里到底是body呢，还是form?

把上面代码中的body改成form又会提示下面的错误，我怀疑是接口的问题，不知道是不是啊?????
Unhandled rejection StatusCodeError: 500 - "System.Web.HttpRequestValidationException: 从客户端(fileData=&quot;...�e���=�T��<yu#5�����d�3L6o�Y�...&quot;)中检测到有潜在危险的 Request.Form 值。
Unhandled rejection StatusCodeError: 500 - "System.InvalidOperationException: 缺少参数: key。\r\n   在 System.Web.Services.Protocols.ValueCollectionParameterReader.Read(NameValueCollection collection)\r\n   在 System.Web.Services.Protocols.HttpServerProtocol.ReadParameters()\r\n   在 System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()\r\n"

48|v3.oa.t | at new StatusCodeError (/mnt/webtest/v3.xx.test.xxx.com/node_modules/.1.1.1@request-promise-core/lib/errors.js:32 :15)
Now it prompts me that the parameter key is missing. My key has been placed in the form. Why is it still missing?