how to convert image raw data to image - node.js

Question

I want to show user's document file which is return by spring boot api in nodejs
but the file is not showing.
Here is my code of spring boot api
httpServletResponse.setHeader("Content-Disposition", "inline; filename=" + storeDocName + "");
httpServletResponse.setContentType(fileType);
httpServletResponse.setContentLengthLong(Files.readAllBytes(file.toPath()).length);
httpServletResponse.getOutputStream().write(Files.readAllBytes(file.toPath()));
Here is my node js code
requestMethodGetForImageData: function(url, form, header) {
return new Promise((resolve, reject) => {
//SET ALL THESE PARATMETER TO MAKE REQUEST
request.get({ url: url, qs: form, headers: header }, function(error, response, body) {
var result = {
body: response.body,
header: response.headers['content-type']
};
resolve(result);
}
});
});
},
I am using request module of nodejs to send the request to spring api and in nodejs here, I am calling this request function
router.get("/loadStoreDocument", function(req, res) {
var url = httpProtocol + httpServer + servicePort + serviceUrl;
//SET HEADER
headers = {
'Authorization': "token"
};
//SET FORM DATA
form = {
account_id: "id",
token_type: "token_type",
document_child_id: "id"
};
requestHandling.requestMethodGetForImageData(url, form, headers)
.then((result) => {
res.header("content-type", result.header);
res.send(result.body);
}).catch((err) => {
console.log("ERROR IN GET STORE PROFILE");
console.log(err);
res.send(err);
});
});
But when I call this URL(loadStoreDocument) then it returns image like this
enter image description here
Response of spring api is here(image data)
enter image description here
Please help me, I search this everywhere but couldn't find any solution.

Answer 1

You need to set encoding: null in request.get() options.
request.get({ url: url, qs: form, headers: header, encoding: null })
From request docs:
encoding - encoding to be used on setEncoding of response data. If
null, the body is returned as a Buffer. Anything else (including the
default value of undefined) will be passed as the encoding parameter
to toString() (meaning this is effectively utf8 by default). (Note: if
you expect binary data, you should set encoding: null.)