我当前正在使用此代码从本地磁盘中选择文件到我的api:
<script language="javascript" type="text/javascript">
$(document).ready(function(){
$(':file').on('change', function () {
var file = this.files[0];
if (file.type !== "video/mp4" && file.type!== "video/quicktime") {
alert("Content must be video .mp4 or .mov")
}
$(':button').on('click', function () {
if (file.type == "video/mp4" || file.type == "video/quicktime"){
$.ajax({
// Your server script to process the upload
url: 'azureAPI',
type: 'POST',
// Form data
data: new FormData($('form')[0]),
// Tell jQuery not to process data or worry about content-type
// You *must* include these options!
cache: false,
contentType: false,
processData: false,
// Custom XMLHttpRequest
xhr: function () {
var myXhr = $.ajaxSettings.xhr();
if (myXhr.upload) {
// For handling the progress of the upload
myXhr.upload.addEventListener('progress', function (e) {
if (e.lengthComputable) {
$('progress').attr({
value: e.loaded,
max: e.total,
});
}
}, false);
}
return myXhr;
}
});
} else {
alert ("File type must be .mp4 or .mov")
}
});
});
});
</script>
这将以以下形式发送(我假设是)二进制数据:
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我正在使用Azure,现在尝试将其发送到Microsoft Video Indexer,后者说是将数据作为主体中的multipart / form-data发送。 (请参阅https://api-portal.videoindexer.ai/docs/services/Operations/operations/Upload-Video?)
我尝试在主体中发送二进制数据,但是它说它需要字符串/缓冲区。
然后我尝试以var body = Buffer.from(req.body,'binary')
的形式在主体中发送二进制数据
哪个发送了,但是VI回答说可能是在索引数据时出现问题,也许是因为我发送的编码错误?
要解决此问题,我现在尝试首先将二进制数据保存到块Blob,然后再调用该URL,但是我在使用以下方法将二进制数据保存到Azure块Blob时遇到问题:
var buf = Buffer.from(req.body, 'binary');
blobService.createBlockBlobFromText(container, 'fileName.mp4', buf, {contentSettings: {contentType: 'video/mp4', contentEncoding: 'binary'}}, function (error, result, response) {
if(!error){
callback('uploaded');
} else {
callback('nope');
}
});
我尝试了此操作,起初没有contentSettings
,但是将数据另存为contentType: application/octet-stream
,但并未将其作为视频打开。然后,我添加了contentType
,最后尝试也添加了contentEncoding
。
这保存了正确的contentType
,但仍无法打开视频。
有人知道如何正确编码数据,或者首先将其直接发送到视频索引器,或者其次将二进制数据保存到Azure blob存储吗?
感谢任何指点,如果我遗漏任何内容,我们深表歉意。
答案 0 :(得分:1)
根据我的测试,如果要使用Azure函数将文件上传到Azure blob,请参考以下代码。
前端
<!DOCTYPE html>
<html>
<script type="text/javascript"
src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.4.1.js">
</script>
<body>
<form enctype="multipart/form-data">
<input name="file" type="file" accept="video/*"/>
<input type="button" value="Upload" />
</form>
<progress></progress>
<script language="javascript" type="text/javascript">
$(document).ready(function(){
$(':file').on('change', function () {
var file = this.files[0];
if (file.type !== "video/mp4" && file.type!== "video/quicktime") {
alert("Content must be video .mp4 or .mov")
}
$(':button').on('click', function () {
if (file.type == "video/mp4" || file.type == "video/quicktime"){
$.ajax({
// Your server script to process the upload
url: '',
type: 'POST',
crossDomain: true,
enctype: 'multipart/form-data',
// Form data
data: new FormData($('form')[0]),
// Tell jQuery not to process data or worry about content-type
// You *must* include these options!
cache: false,
contentType: false,
processData: false,
success : function(data){console.log(data);},
// Custom XMLHttpRequest
xhr: function () {
var myXhr = $.ajaxSettings.xhr();
if (myXhr.upload) {
// For handling the progress of the upload
myXhr.upload.addEventListener('progress', function (e) {
if (e.lengthComputable) {
$('progress').attr({
value: e.loaded,
max: e.total,
});
}
}, false);
}
return myXhr;
}
});
} else {
alert ("File type must be .mp4 or .mov")
}
});
});
});
</script>
</body>
</html>
天蓝色功能
var multipart = require('parse-multipart')
var azure = require('azure-storage');
var getStream = require('into-stream')
module.exports = async function (context, request) {
context.log('JavaScript HTTP trigger function processed a request.');
// encode body to base64 string
var bodyBuffer = Buffer.from(request.body);
var boundary = multipart.getBoundary(request.headers['content-type']);
// parse the body
var parts = multipart.Parse(bodyBuffer, boundary);
const accountname ="blobstorage0516";
const key = "key";
const containerName="test";
var retryOperations = new azure.ExponentialRetryPolicyFilter();
const blobClient =azure.createBlobService(accountname,key).withFilter(retryOperations);
blobClient.createContainerIfNotExists(containerName, function (error) {
if (error) {
context.log(error);
}
});
var options = {
contentSettings:{contentType: parts[0].type},
metadata: { fileName: parts[0].filename },
blockSize:8*1024*1024,
parallelOperationThreadCount:20,
timeoutIntervalInMs:30*60*1000
};
var stream =getStream(parts[0].data)
context.log("start")
var result="ok"
var speedsummary= blobClient.createBlockBlobFromStream(containerName,parts[0].filename,stream,parts[0].data.length,options,function (error) {
if (error != null) {
result=error
} else {
}})
context.res = { body : { results : result}};
context.done();
};
您还可以从bloburl
访问视频