Upload json object as file stream in REST API in node JS

问题

I have JSON object which is really big, I would like to upload this object as JSON file through REST API.

I tried to write the json object in local file system then created read stream from the file and uploaded it. But I have a limitation that I shouldn't create a file locally, I would like to upload the json object directly to the REST api as like any other file.

Is it possible to send json object as stream into REST API

回答1:

Create a new BLOB with the JSON object that you want to send, and then use FormData to send it across as a file.

var formData = new FormData();
var blob = new Blob(['{"hello": "world!!!"}'], { type: 'text/json' });
formData.append('file', blob,'my_file.json');

And then send it across as a POST request.

fetch('http://URLgoesHere',
{ method: 'POST', body: formData,})
.then(console.log("works!"))
.catch((err) => console.log(err));

If you are trying to do this serverside, it's probably easier to just send the JSON object directly, and when received at client side, just create a blob with the JSON data and download it as a text file.

来源：https://stackoverflow.com/questions/54559248/upload-json-object-as-file-stream-in-rest-api-in-node-js