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View or download PDF from Api Rest fetch

I am trying to finish a download of a PDF from an API Rest. I can't see the pdf completely in a new browser tab, I get a chorme pop up with the message "Error
An error occurred while loading the PDF document."
I have the following:
function download_2() {
var myHeaders = new Headers();
myHeaders.append(
"Authorization",
"mytokennnnnnnnnnnnn"
);
var requestOptions = {
method: "GET",
headers: myHeaders,
redirect: "follow",
};
fetch(
"myAPIRESTurlurlurlurlurl",
requestOptions
)
.then((response) => response.text())
.then((result) => {
let blob = new Blob([result.data], { type: "application/pdf" });
var arrayBuff;
var fileReader = new FileReader();
fileReader.onload = function (event) {
arrayBuff = event.target.result;
};
fileReader.readAsArrayBuffer(blob);
var URL = window.URL || window.webkitURL;
const url = window.URL.createObjectURL(blob);
const link = document.createElement("a");
link.target = "_blank";
link.href = url;
//I apend the link element
document.body.appendChild(link);
//download
link.click();
// Clean and remove the link
link.parentNode.removeChild(link);
URL.revokeObjectURL(url);
})
.catch((error) => console.log("error", error));
}
I've also used the fileReader to then pass the blob to it, but I'm not sure if I'm doing it right.
Thank you for the help.
Regards.

Did you try to add the download="true" attribute to the href tag you created ?

Unable to select text in pdf when downloading from NGINX server

I have the following code in a NodeJS app using the library node-html-pdf:
pdf.create(PDF_html).toStream((err, pdfStream) => {
if (err) {
console.log(err)
return res.sendStatus(500)
} else {
res.statusCode = 200
res.setHeader('Content-type', 'application/pdf')
res.attachment()
pdfStream.on('end', () => {
return res.end()
})
pdfStream.pipe(res)
}
})
On the client side I am using fetch to retrieve and download the PDF using the following code:
document.getElementById('pdf_button').addEventListener("click", function() {
let query_nr = ''
let query_spnr = ''
let url = 'https://{my.public.server.url}/getPDF/'
fetch(url, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({
"nr": query_nr,
"spnr": query_spnr
})
})
.then((response) => response.blob())
.then((blob) => {
blob = new Blob([blob], {type: "application/pdf"});
const objectURL = URL.createObjectURL(blob);
const a = document.createElement("a")
document.body.appendChild(a)
a.style = "display: none"
a.href = objectURL
a.type = 'application/pdf'
a.download = query_nr + '-' + query_spnr + '.pdf'
console.log(a);
a.click()
// window.open(objectURL, '_blank');
})
.catch((error) => {
console.error(error);
})
});
The above code works fine as long I am using localhost as url, and I am able to select text from the downloaded text.
When I download the PDF from the server it seems like the whole PDF-file gets converted to an image (I might be very wrong), and I am not able to select any text.
Does anyone know how I can fix this? And why is this happening?

How to download excel file with axios vuejs?

On the controller I return a path to where the excel file is located..Now I want to download that file
Below is my code:
reportExcel(val) {
axios
.get("/algn/api/report/" + val)
.then((res) => {
var url = res.data; // http://localhost.local/public/files/data.xlsx
const a = document.createElement("a");
a.href = url;
a.download = url.split("/").pop();
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
})
.catch((error) => {
console.log(error);
});
},
I am getting the error as "Excel cannot open the file "data.xlsx" because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file". (The original excel file is still usable).
I have tried all the solutions which I found in google but nothing worked. Please help. Thanks

Try this:
reportExcel(val) {
axios
// add responseType
.get("/algn/api/report/" + val, {responseType : 'blob'})
.then((res) => {
const url = window.URL.createObjectURL(new Blob([res]));
const a = document.createElement("a");
a.href = url;
const filename = `file.xlsx`;
a.setAttribute('download', filename);
document.body.appendChild(link);
a.click();
a.remove();
})
.catch((error) => {
console.log(error);
});
},
Assuming the link gives correct excel file, we can inform that it is file (not the usual JSON) by specifying {responseType : 'blob'} in the request. Then, create the file using window.URL.createObjectURL(new Blob([res])). The rest is small adjustments to handle file instead of text.

Open blob file stored in indexDB on ios/Ipad

Hello i download file using axios like so.
return axios({
method: "get",
url: URL,
responseType: "blob",
})
.then((response) => {
return {
...val,
blob: response.data,
};
})
.catch((_) => {
onError(val);
});
After that i store it in indexDB using Dexie.
const { id } = dataToSave;
return db.files.put(dataToSave, id);
I have file in db like blob
Next i want to save it like so:
download(myBlob, title, mimeType);
i try using filesaver,downloadjs or manualy
const { title, blob, mimeType } = material;
const url = window.URL.createObjectURL(blob);
const a = document.createElement("a");
a.style.display = "none";
a.href = url;
// the filename you want
a.download = title;
document.body.appendChild(a);
a.click();
setTimeout(() => {
window.URL.revokeObjectURL(url);
document.body.removeChild(a);
}, 1000);
It will download file only right after i download it to blob (browser session).
When i refresh page i get error WebkitBlobResource:1.
Any workaround of problem ? To either download file (pdf,html) or open it in new or same tab.

For now store data as arraybuffer, not blob works.

VueJs $router not working after download .docx from Axios request using Blob

Here is my function:
After link.click() document downloaded but this.$router.push() stop working. What is the problem?
axios.post(apiurl + "api/appform-list/",
{
this.data
},
{
responseType: "arraybuffer",
}
)
.then((response) => {
let blob = new Blob([response.data]),
url = window.URL.createObjectURL(blob);
const link = document.createElement("a");
link.href = url;
link.setAttribute("download", "GeneratedDoc.docx");
document.body.appendChild(link);
link.click();
this.RemoveInputs();
this.$router.push("/clientlist");
})
.catch(function (error) {
console.log(error)
});