CloudStorageAccount.FromConfigurationSetting("DataConnectionString")异常问题,请高手帮忙指导一下,谢谢!.[新手上路]

Question

执行CloudStorageAccount.FromConfigurationSetting("DataConnectionString")时,系统总出现异常错误.

提示我:"SetConfigurationSettingPublisher needs to be called before FromConfigurationSetting can be used "

但我自己检查后,没发现问题在哪里.请各位大虾,帮忙指导一下.

我用的开发工具:VS2012 Ultimate

云计算平台版本:Windows Azure Storage Emulator 3.4.0.0

问题代码如下:

一.Azure部分的代码

namespace AzureService
{
    public class AzureBlobService
    {
        public static CloudBlobClient InitializeCloudBlobClient(string containerName)
        {
            try
            {
                CloudBlobClient blobStorage;
                
                 // 读取Azure Storage 帐号信息[创建]
                  var storageAccount = CloudStorageAccount.FromConfigurationSetting("DataConnectionString");

                // 创建Container
                blobStorage = storageAccount.CreateCloudBlobClient();
                CloudBlobContainer container = blobStorage.GetContainerReference(containerName);

             // 注意Container的名字必须为小写
                container.CreateIfNotExist();

                // 配置访问权限[创建]
                var permissions = container.GetPermissions();
                permissions.PublicAccess = BlobContainerPublicAccessType.Blob;
                container.SetPermissions(permissions);
                return blobStorage;
            }
            catch (WebException)
            {
                System.Diagnostics.Trace.TraceInformation("无法正确连接到Azure Blob Account");
                throw new WebException("无法正确连接到Azure Blob Account");
            }
        }

二. Azure Storage运行配置部分

        public override bool OnStart()
        {
            DiagnosticMonitor.Start("DiagnosticsConnectionString");

             RoleEnvironment.Changing += RoleEnvironmentChanging;

            Microsoft.WindowsAzure.CloudStorageAccount.SetConfigurationSettingPublisher((configName, configSetter) =>
            {
                var DataConnectionString = RoleEnvironment.GetConfigurationSettingValue(configName);
                configSetter(DataConnectionString);

             });
            return base.OnStart();
        }

Answer 1

Hi,

我建议把你的storage client升级到2.0版本以上 (http://www.nuget.org/packages/WindowsAzure.Storage/)，然后使用下面的代码再试试。

var storageAccountInfo = CloudStorageAccount.Parse(
            CloudConfigurationManager.GetSetting(configSetting));

希望能帮助你。

Best Regards,

Jambor

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Answer 2

thanks!