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<!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>
