[英]Nodejs Extra Data in FormData
I am sending a http request with a file to Sharepoint.我正在向 Sharepoint 发送带有文件的 http 请求。 Some file types, such as png or other images become corrupted and unreadable.
某些文件类型(例如 png 或其他图像)已损坏且无法读取。 When looking at those I see extra object data at the head eg
在查看那些时,我在头部看到额外的 object 数据,例如
----------------------------826320949470377643449533
Content-Disposition: form-data; name="file"; filename="mypdf.pdf"
Content-Type: application/pdf
and at the bottom:在底部:
----------------------------826320949470377643449533--
Is there a way to prevent this?有没有办法防止这种情况? The code I am using looks like:
我正在使用的代码如下所示:
const contentType = mime.contentType(fileName);
const data = new FormData();
data.append('file',fs.createReadStream(path));
const fileSize = req.headers['content-length']
fs.promises.file(file)).size
const fileSizeLessByte = fileSize-1;
const contentRange = 'bytes 0-'+fileSizeLessByte+'/'+fileSize;
const contentLength = fileSize;
var config = {
method: 'put',
url: uploadUrl,
headers: {
'Content-Range': contentRange,
'Content-Length': contentLength,
'Content-Type': 'multipart/form-data'
},
data : data
};
I was eventually able to get this working by using readFileSync instead of FormData and not using the multipart content type as O. Jones suggested:我最终能够通过使用 readFileSync 而不是 FormData 来完成这项工作,而不是像 O. Jones 建议的那样使用多部分内容类型:
const contentType = mime.contentType(fileName);
const fileStream = fs.readFileSync(path);
const fileSize = Buffer.byteLength(fileStream);
const fileSizeLessByte = fileSize-1
const contentRange = 'bytes 0-'+fileSizeLessByte+'/'+fileSize;
const contentLength = fileSize;
const config = {
method: 'put',
url: uploadUrl,
headers: {
'Content-Type': contentType,
'Content-Range': contentRange,
'Content-Length': contentLength
},
data: fileStream
};
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