const reader = new FileReader();
reader.readAsDataURL(file);
When utilizing the readAsDataURL method, smaller files (under 5mb) are read and uploaded successfully. However, issues arise when attempting to upload larger files (24MB), as the filereader.result returns null in Internet Explorer. This functionality does work correctly in Chrome.
Avoid using the FileReader API and instead, directly stream the file object for better efficiency.
var config = { headers: { 'Content-Type': undefined } };
$http.post(url, file, config)
.then(function (response) {
var data = response.data;
var status = response.status;
var statusText = response.statusText;
var headers = response.headers;
var config = response.config;
console.log("Success");
return response;
}).catch(function (errorResponse)
console.log("Error");
throw errorResponse;
});
The XHR Send Method is capable of streaming file objects as they are a type of Blob, eliminating the need to load the entire file into memory.
It is crucial to set the content type header to undefined so that the XHR send method can properly handle it. Otherwise, AngularJS will default to application/json.
Refer to AngularJS $http Service API Reference for more details.
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