Plupload plugin callback get uploaded file md5.
Plupload has the same question, but others can't get the right answer.
Below code is my test. please confirm.
- import spark-md5
<!-- spark-md5 -->
<script src="https://cdn.bootcdn.net/ajax/libs/spark-md5/3.0.0/spark-md5.js"></script>
- calc md5 method
// file md5 method
function calculate(file, callBack) {
let fileReader = new FileReader(),
blobSlice = File.prototype.mozSlice || File.prototype.webkitSlice || File.prototype.slice,
chunkSize = 2097152,
// read in chunks of 2MB
chunks = Math.ceil(file.size / chunkSize),
currentChunk = 0,
spark = new SparkMD5();
fileReader.onload = function(e) {
spark.appendBinary(e.target.result); // append binary string
currentChunk++;
if (currentChunk < chunks) {
loadNext();
} else {
callBack(spark.end());
}
};
function loadNext() {
let start = currentChunk * chunkSize,
end = start + chunkSize >= file.size ? file.size : start + chunkSize;
fileReader.readAsBinaryString(blobSlice.call(file, start, end));
};
loadNext();
}
- file upload callback get file md5
// 文件上传回调
function uploadCallback(status, remote_path, filename, callback_params, file) {
// 调用计算md5的方法
calculate(file.getNative(), function(md5) {
console.log(md5); //hash值
});
// other code ....
// ....
});
