Following is the pdf buffer. I want convert buffer to pdf file.
data = { "file": { "type": "Buffer", "data": [ 102, 24, 62 ] }, } res.send( data ); 
- Where does the buffer come from? If you are creating it, than you should write it into a file and send that back.Balázs Zákány– Balázs Zákány2020-03-04 09:53:07 +00:00Commented Mar 4, 2020 at 9:53
- The buffer is of pdf fileMrunall Veer– Mrunall Veer2020-03-04 09:57:52 +00:00Commented Mar 4, 2020 at 9:57
- Then why not just sending the file back? You can create a readstream and pipe that to the responseBalázs Zákány– Balázs Zákány2020-03-04 10:02:36 +00:00Commented Mar 4, 2020 at 10:02
- I was trying to send pdf file along with associated json data {status:200, fileBuffer: fileBuffer, "otherJsonData": {"a": 1, "b":2} } but it is not possible to use res.download and res.send together, so I converted pdf file to buffer and then sent itMrunall Veer– Mrunall Veer2020-03-04 10:18:21 +00:00Commented Mar 4, 2020 at 10:18
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1 Answer
You can use res.sendFile and use the header to send some data along.
// res.sendFile(path [, options] [, fn]) let options = { headers: { 'TheDataYouWantToSend': Date.now() // for example a timestamp } } req.sendFile(absolutePathToFile, options) I hope this helps
3 Comments
Mrunall Veer
how to set custom header? it is throwing an error { "statusCode": 425, "statusMsg": "Invalid character in header content [\"dataArr\"]" }
Mrunall Veer
I am trying to pass json array in headers {"Content-Type": "application/json", "dataArr": [{"a": 1, "b": 2}] })
Balázs Zákány
I think you can just use JSON.stringify on the array, and parse it on the frontend. Also you might not want to set the content type to json, since you are sending a file.