403测试azure Blob存储上载时出错
我阅读并实现了以下文章，用于在javascript客户端和azure blob存储之间分块文件： http ： //gauravmantri.com/2013/02/16/uploading-large-files-in-windows-azure-blob-storage-using- shared-access-signature-html-and-javascript 。 我似乎能够生成共享访问签名并创建权限，但是当我尝试使用以下SAS URL将块“突然”设置为azure时，我收到错误：“403（服务器无法validation请求确保正确形成Authorization标头的值，包括签名。）“。 有人可以取悦我做错了什么。 这是代码和url和代码：
//sas url that is generated http://testing.blob.core.windows.net/image-container?sr=c&si=Perms1&sig=UowbDVCLfFdiVktTZuoupj6BiMUzLRxF3WEZlXKMJcA%3D&comp=block&blockid=YmxvY2stMDAwMDAw //Upload the blocks to azure storage if (evt.target.readyState == FileReader.DONE) { // DONE == 2 var uri = submitUri + '&comp=block&blockid=' + blockIds[blockIds.length - 1]; var requestData = new Uint8Array(evt.target.result); $.ajax({ url: uri, type: "PUT", data: requestData, processData: false, beforeSend: function(xhr) { xhr.setRequestHeader('x-ms-blob-type', 'BlockBlob'); //xhr.setRequestHeader('Content-Length', requestData.length); }, success: function (data, status) { console.log(data); console.log(status); bytesUploaded += requestData.length; var percentComplete = ((parseFloat(bytesUploaded) / parseFloat(selectedFile.size)) * 100).toFixed(2); $("#fileUploadProgress").text(percentComplete + " %"); uploadFileInBlocks(); }, error: function(xhr, desc, err) { console.log(desc); console.log(err); } }); } //Create stored access permissions Microsoft.WindowsAzure.Storage.Blob.CloudBlobClient blobClient = _storageAccount.CreateCloudBlobClient(); //Get a reference to a container to use for the sample code, and create it if it does not exist. Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer container = blobClient.GetContainerReference("images-container"); container.CreateIfNotExists(); //Create a new stored access policy and define its constraints. Microsoft.WindowsAzure.Storage.Blob.SharedAccessBlobPolicy sharedPolicy = new Microsoft.WindowsAzure.Storage.Blob.SharedAccessBlobPolicy() { SharedAccessExpiryTime = DateTime.UtcNow.AddMinutes(10), Permissions = Microsoft.WindowsAzure.Storage.Blob.SharedAccessBlobPermissions.Write }; //Get the container's existing permissions. Microsoft.WindowsAzure.Storage.Blob.BlobContainerPermissions permissions = container.GetPermissions(); //Add the new policy to the container's permissions. if (!permissions.SharedAccessPolicies.ContainsKey(CloudConfiguration.GetConfigurationSetting("PolicyName"))) { permissions.SharedAccessPolicies.Clear(); permissions.SharedAccessPolicies.Add(policyName, sharedPolicy); container.SetPermissions(permissions); } //Generate the SAS Locator CreateStoredAccessPolicy(CloudConfiguration.GetConfigurationSetting("PolicyName")); //Create the blob client object. Microsoft.WindowsAzure.StorageClient.CloudBlobClient blobClient = _storageAccount.CreateCloudBlobClient(); //Get a reference to a container to use for the sample code, and create it if it does not exist. Microsoft.WindowsAzure.StorageClient.CloudBlobContainer container = blobClient.GetContainerReference("images-container"); //Set the expiry time and permissions for the container. //In this case no start time is specified, so the shared access signature becomes valid immediately. SharedAccessPolicy sasConstraints = new SharedAccessPolicy(); //Generate the shared access signature on the container, setting the constraints directly on the signature. string sasContainerToken = container.GetSharedAccessSignature(sasConstraints, CloudConfiguration.GetConfigurationSetting("PolicyName")); var newFileFile = Guid.NewGuid().ToString() + extension; var blobUri = new UriBuilder(container.AbsoluteUri.ToString() + sasContainerToken); // return the new VideoAsset return new ImageAsset() { SasLocator = blobUri.AbsoluteUri.ToString(), NewFileName = newFileFile }; 我目前正在本地机器上的azure仿真器上以调试模式进行测试。 不确定这是否是一个因素。
在容器上建立存储的访问策略时，最多可能需要30秒才能生效。 在此间隔期间，与存储的访问策略关联的共享访问签名将失败，状态码为403（禁止），直到访问策略变为活动状态。 有关共享访问策略的更多信息，请查看 – https://msdn.microsoft.com/library/azure/dd179391.aspx 。
因此，除了确保您正在生成如上所述的正确URL之外，请确保在使用该策略之前等待30秒。
即使您尝试上传块，生成的URL也指向容器。 它还应包含一个blob名称，如http://testing.blob.core.windows.net/image-container/image-blob 。