<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS分片上传-极速上传</title>
</head>
<body>
<input type="file" name="slice" id="slice" >
<div id="output"><!-- 信息存放地 --> </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;
//进行初始化
$.ajax({
type:"POST", //请求方式
url:"http://localhost:8080/getuploadId",
async: false,
dataType:"json", //返回数据类型
data:{//请求参数
fileName:name,
},
success:function(data){ //请求成功后
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;
//成功后执行分段上传
PostFile(file,0,objectName,uploadId);
//合并
combineFile(objectName,uploadId);
},
error:function (){
alert("系统出现异常！");
flag=false;
}
});
});
//执行分片上传
function PostFile(file,i,objectName,uploadId){
var name = file.name, //文件名
size = file.size, //总大小shardSize = 2 * 1024 * 1024,
shardSize = 1 * 1024 * 1024, //以2MB为一个分片,每个分片的大小
shardCount = Math.ceil(size / shardSize); //总片数
if(i >= shardCount){
return;
}
//console.log(size,i+1,shardSize); //文件总大小，第一次，分片大小//
var start = i * shardSize;
var end = start + shardSize;
var packet = file.slice(start, end); //将文件进行切片
// 分段号
var partNumber = i + 1;
/* 构建form表单进行提交 */
var form = new FormData();
form.append("fileId", ‘001‘)
form.append("data", packet); //slice方法用于切出文件的一部分
// form.append("lastModified", file.lastModified); //最后的额修改时间
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); //总片数
form.append("index", i + 1); //当前是第几片
$.ajax({
// header: {
// web_token: "cpBvqWrr0UK9zPJoKj+412alxxcY6qFwrSVoO0juZg0S1jX/sGfMd9oi3AsSxW+MdWFrwtGCykUTmMqrqpbCElmT75DfB87lENC7lCuMxgF0d5wQB6yAubUVyGOzhbrScvIfD8ZSjOJ3D88AOy2xRd4oG8TxeGoMoZqnqIwjKg="
// },
url: "http://localhost:8080/multipartupload",
type: "POST",
data: form,
//timeout:"10000", //超时10秒
async: false, //同步
dataType:"json",
processData: false, //很重要，告诉jquery不要对form进行处理
contentType: false, //很重要，指定为false才能形成正确的Content-Type
success: function (data) {
console.log("data="+JSON.stringify(data));
/* 表示上一块文件上传成功，继续下一次 */
if (data.data.code == 1) {
form = ‘‘;
i++;
PostFile(file, i,objectName,uploadId);
} else if (data.data.code == 502) {
form = ‘‘;
/* 失败后，每2秒继续传一次分片文件 */
setInterval(function () { PostFile(file, i,objectName,uploadId) }, 2000);
} else if (data.data.code == 200) {
console.log("上传成功");
} else if (data.data.code == 500) {
console.log(‘第‘+msg.i+‘次，上传文件有误！‘);
} else {
console.log(‘未知错误‘);
}
}
})
}
//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", //请求方式
url:"http://localhost:8080/combine",
async: false,
contentType:"application/json",
dataType:"json", //返回数据类型
data:JSON.stringify(object),
success:function(data){ //请求成功后
console.log("data="+JSON.stringify(data));
console.log("data.data.code="+data.data.code);
console.log("data.data.url="+data.data.url);
},
error:function (){
alert("系统出现异常！");
flag=false;
}
});
}
</script>
</html>