发送帖子请求多部分表单数据。某些 Microsoft 服务出现错误“超出行长度限制 100”

该数据是从 Postman 发送的，它的工作原理是：

这是一个以 200 状态通过的邮递员请求：

POST /api/upload HTTP/1.1

Host: api.test.contoso.se

Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW

Authorization: Basic 123

User-Agent: PostmanRuntime/7.13.0

Accept: */*

Cache-Control: no-cache

Postman-Token: 089af753-fa12-46c4-326f-dfc39c36faab,c5977145-ece3-4b53-93ff-057788eb0dcf

Host: api.test.contoso.se

accept-encoding: gzip, deflate

content-length: 18354

Connection: keep-alive

cache-control: no-cache

Content-Disposition: form-data; name="Lang"

SV
------WebKitFormBoundary7MA4YWxkTrZu0gW--

Content-Disposition: form-data; name="File"; filename="/C:/Users/file.docx


------WebKitFormBoundary7MA4YWxkTrZu0gW--

Content-Disposition: form-data; name="Login"

ABC

这是我通过 Axios 从 NodeJs 发出的请求：

    const form_data = new FormData();
        form_data.append("File", fs.createReadStream(pathToFile));
        form_data.append('Login', alias.toUpperCase());
        console.log(form_data); // se output down
        const request_config = {
            headers: {
                "Authorization": "Basic 123",
                "Content-Type": `multipart/form-data; boundary=${form_data._boundary}`
            },
            data: form_data
        };

控制台.log（表单数据）：

FormData {

  _overheadLength: 540,

  _valueLength: 13,

  _valuesToMeasure:

   [ ReadStream {

       _readableState: [ReadableState],

       readable: true,

       _events: [Object],

       _eventsCount: 3,

       _maxListeners: undefined,

       path:

        '/Users/qq/test.docx',

       fd: null,

       flags: 'r',

       mode: 438,

       start: undefined,

       end: Infinity,

       autoClose: true,

       pos: undefined,

       bytesRead: 0,

       closed: false,

       emit: [Function] } ],

  writable: false,

  readable: true,

  dataSize: 0,

  maxDataSize: 2097152,

  pauseStreams: true,

  _released: false,

  _streams:

   [ '----------------------------610001147909085905792533\r\nContent-Disposition: form-data; name="File"; filename="test.docx"\r\nContent-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document\r\n\r\n',

     DelayedStream {

       source: [ReadStream],

       dataSize: 0,

       maxDataSize: Infinity,

       pauseStream: true,

       _maxDataSizeExceeded: false,

       _released: false,

       _bufferedEvents: [Array],

       _events: [Object],

       _eventsCount: 1 },

     [Function: bound ],

     '----------------------------610001147909085905792533\r\nContent-Disposition: form-data; name="Login"\r\n\r\n',

     'abc',

     [Function: bound ] ],

  _currentStream: null,

  _insideLoop: false,

  _pendingNext: false,

  _boundary: '--------------------------610001147909085905792533

我从 ASP 服务器收到的错误：Line length limit 100 exceeded

我的请求中缺少什么？

根据这两个github问题：

https://github.com/aspnet/AspNetCore/issues/2939 https://github.com/aspnet/AspNetCore/issues/2939

https://github.com/aspnet/AspNetCore/issues/3724 https://github.com/aspnet/AspNetCore/issues/3724

该问题是由于未能使用正确的行结尾引起的。我无法从你的代码中看出exactly问题发生的位置，但调试它应该相当简单。

你需要使用代理 - 我发现Fiddler https://www.telerik.com/fiddler非常好。捕获来自邮递员和您的客户的请求并进行比较。您可能需要将整个请求放入 Notepad++ 等编辑器中才能查看非打印字符。

一旦发现问题，修改、添加或删除应该很简单\r作为适当的。