<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS分片上傳-極速上傳</title>
</head>
<body>
<input type="file" name="slice" id="slice" >
<div id="output"><!-- 資訊存放地 --> </div>
<br/>
</body>
<script src="http://libs.baidu.com/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
$("#slice").change(function(event) {
var file = $("#slice")[0].files[0];
var name = file.name;
//進行初始化
$.ajax({
type:"POST", //請求方式
url:"http://localhost:8080/getuploadId",
async: false,
dataType:"json", //回傳資料型別
data:{//請求引數
fileName:name,
},
success:function(data){ //請求成功后
console.log("data.code="+JSON.stringify(data));
console.log("data.data.objectName="+data.data.objectName);
console.log("data.data.uploadId="+data.data.uploadId);
var objectName=data.data.objectName;
var uploadId=data.data.uploadId;
//成功后執行分段上傳
PostFile(file,0,objectName,uploadId);
//合并
combineFile(objectName,uploadId);
},
error:function (){
alert("系統出現例外！");
flag=false;
}
});
});
//執行分片上傳
function PostFile(file,i,objectName,uploadId){
var name = file.name, //檔案名
size = file.size, //總大小shardSize = 2 * 1024 * 1024,
shardSize = 1 * 1024 * 1024, //以2MB為一個分片,每個分片的大小
shardCount = Math.ceil(size / shardSize); //總片數
if(i >= shardCount){
return;
}
//console.log(size,i+1,shardSize); //檔案總大小，第一次，分片大小//
var start = i * shardSize;
var end = start + shardSize;
var packet = file.slice(start, end); //將檔案進行切片
// 分段號
var partNumber = i + 1;
/* 構建form表單進行提交 */
var form = new FormData();
form.append("fileId", '001')
form.append("data", packet); //slice方法用于切出檔案的一部分
// form.append("lastModified", file.lastModified); //最后的額修改時間
form.append("name", name);
form.append("totalSize", size);
form.append("uploadId", uploadId);
form.append("objectName", objectName);
form.append("mainFile", packet);
form.append("total", shardCount);
form.append("sortNumber", partNumber);
//uploadId:uploadId,
//objectName:objectName,
//mainFile:blob,
//total:partCount,
//sortNumber:partNumber
if(shardCount === i+1){
shardSize = size - i * shardSize
}
form.append("shardSize", shardSize);
form.append("total", shardCount); //總片數
form.append("index", i + 1); //當前是第幾片
$.ajax({
// header: {
// web_token: "cpBvqWrr0UK9zPJoKj+412alxxcY6qFwrSVoO0juZg0S1jX/sGfMd9oi3AsSxW+MdWFrwtGCykUTmMqrqpbCElmT75DfB87lENC7lCuMxgF0d5wQB6yAubUVyGOzhbrScvIfD8ZSjOJ3D88AOy2xRd4oG8TxeGoMoZqnqIwjKg="
// },
url: "http://localhost:8080/multipartupload",
type: "POST",
data: form,
//timeout:"10000", //超時10秒
async: false, //同步
dataType:"json",
processData: false, //很重要，告訴jquery不要對form進行處理
contentType: false, //很重要，指定為false才能形成正確的Content-Type
success: function (data) {
console.log("data="https://www.cnblogs.com/smileZAZ/archive/2020/11/02/+JSON.stringify(data));
/* 表示上一塊檔案上傳成功，繼續下一次 */
if (data.data.code == 1) {
form ='';
i++;
PostFile(file, i,objectName,uploadId);
} else if (data.data.code == 502) {
form = '';
/* 失敗后，每2秒繼續傳一次分片檔案 */
setInterval(function () { PostFile(file, i,objectName,uploadId) }, 2000);
} else if (data.data.code == 200) {
console.log("上傳成功");
} else if (data.data.code == 500) {
console.log('第'+msg.i+'次，上傳檔案有誤！');
} else {
console.log('未知錯誤');
}
}
})
}
//合并
function combineFile(objectName,uploadId){
console.log("objectName="+objectName);
console.log("uploadId="+uploadId);
var object=new Object();
object.objectName=objectName;
object.uploadId=uploadId;
$.ajax({
headers: {
Accept: "application/json; charset=utf-8"
},
type:"POST", //請求方式
url:"http://localhost:8080/combine",
async: false,
contentType:"application/json",
dataType:"json", //回傳資料型別
data:JSON.stringify(object),
success:function(data){ //請求成功后
console.log("data="https://www.cnblogs.com/smileZAZ/archive/2020/11/02/+JSON.stringify(data));
console.log("data.data.code="+data.data.code);
console.log("data.data.url="+data.data.url);
},
error:function (){
alert("系統出現例外！");
flag=false;
}
});
}
</script>
</html>
轉載于：https://blog.csdn.net/likun1239656678/article/details/109432560?utm_medium=distribute.pc_category.none-task-blog-hot-13.nonecase&depth_1-utm_source=distribute.pc_category.none-task-blog-hot-13.nonecase
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/199914.html
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