Azure BlobStorage：400（请求输入之一超出范围。）

Question

当我尝试将 blob 上传到我的 azure 存储帐户时，收到以下错误响应

<?xml version="1.0" encoding="utf-8"?>
  <Error>
    <Code>OutOfRangeInput</Code>
    <Message>One of the request inputs is out of range. 
           RequestId:--------------------------
           Time:2017-10-29T07:13:37.4218874Z
    </Message>
  </Error>

我正在上传多个 blob，其中一些已成功上传，而另一些则未成功。引发错误的错误具有较大的 blob 名称（大约 100 个字符），因此假设这可能是由于 blob 名称大小所致。但根据https://blogs.msdn.microsoft.com/jmstall/2014/06/12/azure-storage-naming-rules/，最大 blob 名称可以是 1024，而我的 blob 名称远小于该限制。

示例 blob 名称为“65/36/aluminium_03_group67_product_02pCube1_product_02group2_product_02Flow000_Albedo.png”

编辑代码以上传 blob。

要上传的代码是 JavaScript 代码。我正在将文件分成多个块并上传。这里是负责上传文件的函数

function AzureFileUpload(file, uploadUrl, successCallback, progressCallback, errorCallback){
    this.file = file;
    this.uploadUrl = uploadUrl;
    this.successCallback = successCallback;
    this.progressCallback = progressCallback;
    this.errorCallback = errorCallback;
    this.reader = new FileReader();
    this.maxBlockSize = 256 * 1024;
    this.blockIds = [];
    this.totalBytesRemaining = this.file.size;
    this.currentFilePointer = 0;
    this.bytesUploaded = 0;
    this.uploadFlag = true;
    var self = this;
    this.reader.onloadend = function(evt) {
        if (evt.target.readyState == FileReader.DONE) { // DONE == 2
            var uri = self.uploadUrl + '&comp=block&blockid=' + self.blockIds[self.blockIds.length - 1];
            var requestData = new Uint8Array(evt.target.result);
            self.ReadBlock();
            if(self.uploadFlag){
                self.UploadBlock(requestData, uri);
            }
        }
    };
    this.ReadBlock();
}

AzureFileUpload.prototype.UploadBlock = function(requestData, blockUrl){
    var self = this;
    $.ajax({
        url: blockUrl,
        type: "PUT",
        data: requestData,
        processData: false,
        beforeSend: function(xhr) {
            xhr.setRequestHeader('x-ms-blob-type', 'BlockBlob');
            xhr.setRequestHeader('x-ms-blob-cache-control', "public, max-age=864000");
        },
        success: function(data, status) {
            self.UpdateProgress(requestData.length);
            self.bytesUploaded += requestData.length;
            if (parseFloat(self.bytesUploaded) == parseFloat(self.file.size)) {
                self.CommitBlocks();
            }
        },
        error: function(xhr, desc, err) {
            // console.log(desc);
            // console.log(err);
            self.Error("Unexpected error occured while uploading model. Plaese try after some time");
        }
    });
};

AzureFileUpload.prototype.pad = function(number, length){
    var str = '' + number;
    while (str.length < length) {
        str = '0' + str;
    }
    return str;
};

AzureFileUpload.prototype.ReadBlock = function(){
    if (this.totalBytesRemaining > 0) {
        var fileContent = this.file.slice(this.currentFilePointer, this.currentFilePointer + this.maxBlockSize);
        var blockId = "block-" + this.file.name + "-" + this.pad(this.blockIds.length, 6);
        this.blockIds.push(btoa(blockId));
        this.reader.readAsArrayBuffer(fileContent);
        this.currentFilePointer += this.maxBlockSize;
        this.totalBytesRemaining -= this.maxBlockSize;
        if (this.totalBytesRemaining < this.maxBlockSize) {
            this.maxBlockSize = this.totalBytesRemaining;
        }
    }
};

AzureFileUpload.prototype.UpdateProgress = function(bytesUploaded){
    console.log("Progress",bytesUploaded);
    if(this.progressCallback){
        this.progressCallback(bytesUploaded);
    }
};

AzureFileUpload.prototype.CommitBlocks = function(){
    var self = this;
    var uri = this.uploadUrl + '&comp=blocklist';
    var request = '<?xml version="1.0" encoding="utf-8"?><BlockList>';
    for (var i = 0; i < this.blockIds.length; i++) {
        request += '<Latest>' + this.blockIds[i] + '</Latest>';
    }
    request += '</BlockList>';
    $.ajax({
        url: uri,
        type: "PUT",
        data: request,
        beforeSend: function(xhr) {
            xhr.setRequestHeader('x-ms-blob-content-type', self.file.type);
            xhr.setRequestHeader('x-ms-blob-cache-control', "public, max-age=864000");
        },
        success: function(data, status) {
            console.log("Block Commited", data);
            if(self.successCallback){
                self.successCallback();
            }
        },
        error: function(xhr, desc, err) {
            self.Error("Unexpected error occured while uploading model. Plaese try after some time");
        }
    });
};

AzureFileUpload.prototype.Error = function(msg){
    this.CancelUpload();
    if(this.errorCallback){
        this.errorCallback(msg);
    }
};

AzureFileUpload.prototype.CancelUpload = function(){
    this.uploadFlag = false;
};

Answer 1

问题出在以下代码行：

var blockId = "block-" + this.file.name + "-" + this.pad(this.blockIds.length, 6);

本质上，块 ID 的最大长度可以是 64 字节（参考：https: //learn.microsoft.com/en-us/rest/api/storageservices/put-block - 请参阅 URI 参数部分）。由于您在块 ID 计算中包含文件名，并且您的文件名很大，因此超出了此限制。

请尝试使用以下代码行，您应该不会收到此错误：

var blockId = "block-" + this.pad(this.blockIds.length, 6);

请注意，块 ID 的范围仅限于 Blob，因此您实际上没有必要包含 Blob 名称来使块 ID 对于 Blob 是唯一的。