php – Aws S3 CompleteMultipartUpload错误

Fatal error: Uncaught AwsS3ExceptionInvalidRequestException: AWS Error Code: InvalidRequest,Status Code: 400,AWS Request ID: B1A28EBE65521DF4,AWS Error Type: client,AWS Error Message: You must specify at least one part,User-Agent: aws-sdk-php2/2.7.22 Guzzle/3.9.2 curl/7.40.0 PHP/5.6.6 thrown in C:vhosts********.comdb*****FileUploader_v2awsAwsCommonExceptionNamespaceExceptionFactory.php on line 91

每当我使用AWS S3运行我的分段上传程序时,我都会收到上述错误.我的程序应该在JS脚本中切片部分文件,然后使用XMLHTTPRequest将其发送到php脚本.这部分似乎运作良好.但是,调用CompleteMultipartUpload时会出现问题.我从错误中收集到的是我的部分太小或空洞.

的Upload.htm：

var命令;
var文件;
var ownerName;
var totalSize;
var partSize = 2 * 1024 * 1024; // 不变
var sendBackData;
var totalSize;
var sureUploadSize = 0,probableUplaodSize = 0;
var numParts;
var partsLeft = [];

function _(el){
        return document.getElementById(el);
    }

    function calcTotalSize(file){
        var size_total = 0;
        for(var i = 0; i < file.length; i++){
            size_total += file[i].size;
        }
        return size_total;
    }

    function uploadFile(){
        file = _("file").files[0];
        console.log(file);
        ownerName = _("name").value;
        totalSize = file.size;
        command = 'CreateMultipartUpload';

        var formdata = new FormData();
        formdata.append("command",command);
        formdata.append("filename",file.name);
        formdata.append("name",ownerName);
        var ajax = new XMLHttpRequest();
        ajax.open("POST","FileUploader.php",true);
        ajax.send(formdata);
        ajax.onreadystatechange = function() {
            if (ajax.readyState === 4) {
                sendBackData = JSON.parse(ajax.responseText);
                numParts = Math.ceil(totalSize / partSize);
                uploadPart(1);
            }
        };
    }

    function uploadPart(partNum){
        console.log("Uploading part " + partNum);
        console.log(sendBackData['uploadId']);
        command = 'UploadPart';

        if (partNum > numParts) {
            completeMultipartUpload();
            return;
        }

        var formdata = new FormData();

        var start = (partNum - 1) * partSize;
        var end = start + partSize;
        if (end > totalSize)
            end = totalSize;
        var length = end - start;
        var curBlobPart = file.slice(start,end);

        //console.log(sendBackData['uploadId']);

        formdata.append("file[]",curBlobPart);
        formdata.append("command",command);
        formdata.append("uploadId",sendBackData['uploadId']);
        formdata.append("key",sendBackData['key']);
        formdata.append("partNumber",partNum);

        var ajax = new XMLHttpRequest();
        ajax.open("POST",true);
        ajax.addEventListener("load",completeHandler,false);
        ajax.addEventListener("error",errorHandler,false);
        ajax.addEventListener("abort",abortHandler,false);
        ajax.send(formdata);
        ajax.onreadystatechange = function() {
            if (ajax.readyState === 4) {
                uploadPart(partNum + 1);
            }
        };
    }

    function completeMultipartUpload() {
        command = 'CompleteMultipartUpload';

        var formdata = new FormData();
        formdata.append("command",sendBackData['key']);

        var ajax = new XMLHttpRequest();
        ajax.open("POST",false);
        ajax.send(formdata);
        ajax.onreadystatechange = function() {
            if (ajax.readyState === 4) {
                alert("File uploaded successfully");
            }
        };
    }

    function progressHandler(event){
        _("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
        var percent = (event.loaded / event.total) * 100;
        _("progressBar").value = Math.round(percent);
        _("status").innerHTML = Math.round(percent)+"% uploaded... please wait";
    }
    function completeHandler(event){
        _("status").innerHTML = event.target.responseText;
        _("progressBar").value = 0;
    }
    function errorHandler(event){
        _("status").innerHTML = "Upload Failed";
    }
    function abortHandler(event){
        _("status").innerHTML = "Upload Aborted";
    }`

FileUploader.php：
`

//require 'SimpleImage.php';
//require 'gifsplit.php';
//require 'functions.php';

require 'config.php';
require 'aws/aws-autoloader.php';

use AwsCommonExceptionMultipartUploadException;
use AwsS3ModelMultipartUploadUploadBuilder;
use AwsS3S3Client;
use AwsS3ExceptionS3Exception;

function sendJson($arr)
{
    header('Content-Type: application/json');
    die(json_encode($arr));
}

// S3
$s3 = S3Client::factory(array(
    'key' => AWS_KEY,'secret' => AWS_SECRET_KEY
));

//$part = $_POST['part'];

switch ($_POST['command']) {
    case 'CreateMultipartUpload':
        $key = "other/".$_POST['name']."/".$_POST['filename'];

        $response = $s3->createMultipartUpload(array(
            'Bucket'    => TMP_IMG,'Key'       => $key
        ));

        $uploadId = $response['UploadId'];

        sendJson(array(
            'uploadId' => $uploadId,'key'      => $key
        ));
        break;

    case 'UploadPart':
        var_dump($_FILES['file']);

        $result = $s3->uploadPart(array(
            'Bucket'    => TMP_IMG,'Key'       => $_POST['key'],'UploadId'  => $_POST['uploadId'],'PartNumber'=> $_POST['partNumber'],'Body'      => $_FILES['file']['tmp_name']
        ));
        break;

    case 'CompleteMultipartUpload':
        $partsModel = $s3->listParts(array(
            'Bucket' => TMP_IMG,'UploadId'  => $_POST['uploadId']
        ));

        $model = $s3->completeMultipartUpload(array(
            'Bucket' => TMP_IMG,'Key' => $_POST['key'],'UploadId' => $_POST['uploadId'],'Parts' => $partsModel['Parts']
        ));

        sendJson(array(
            'success' => true
        ));
        break;

    case 'AbortMultipartUpload':
        # code...
        break;

    default:
        # code...
        break;
}

我完成任务有什么明显错误吗？我唯一的想法是我的部分尺寸太小,无法上传.如果是这种情况,我确实有一个解决方案,我正在研究的另一个项目版本.