Web Api 上传到 Azure 存储 - 请求实体太大答案

【问题标题】：Web Api Upload to Azure Storage - Request Entity Too LargeWeb Api 上传到 Azure 存储 - 请求实体太大
【发布时间】：2015-12-11 07:58:09
【问题描述】：

我正在尝试通过 Web Api（在不同的域中）将文件从 Web 应用程序上传到 Azure 存储。尽管我在 Web Api 中增加了 maxRequest 长度，但当我尝试上传超过 4mb 的文件时，我会收到异常 413：Request Entity Too Large。我可以设置 Azure 存储中的任何限制来解决此问题吗？

    public string UploadFromByteArray(Byte[] fileStream, string filename)
    {
        try
        {
            ConfigureCors(account);

        }
        catch (Exception ex)
        {

            //throw;
        }
        // set the content type to image
        //blob.Properties.ContentType = "image/pjpeg";

        //blob.Metadata.Add("ModelName", Guid.NewGuid().ToString());
        //blob.SetMetadata();
        var permissions = BlobContainer.GetPermissions();
        permissions.PublicAccess = BlobContainerPublicAccessType.Blob;
        BlobContainer.SetPermissions(permissions);
        CloudBlockBlob blob = BlobContainer.GetBlockBlobReference(filename);
        blob.UploadFromByteArray(fileStream, 0, fileStream.Length);

        return blob.Uri.AbsoluteUri;
    }

    private void ConfigureCors(Microsoft.WindowsAzure.Storage.CloudStorageAccount storageAccount)
    {




        try
        {
            var blobClient = storageAccount.CreateCloudBlobClient();

            ServiceProperties blobServiceProperties = new ServiceProperties()
            {
                HourMetrics = null,
                MinuteMetrics = null,
                Logging = null,
            };

            blobServiceProperties.Cors.CorsRules.Add(new CorsRule()
            {
                AllowedHeaders = new List<string>() { "*" },
                AllowedMethods = CorsHttpMethods.Put | CorsHttpMethods.Get | CorsHttpMethods.Head | CorsHttpMethods.Post,
                AllowedOrigins = new List<string>() { "*" },
                ExposedHeaders = new List<string>() { "*" },
                MaxAgeInSeconds = 3600 // 30 minutes 

            });

            blobClient.SetServiceProperties(blobServiceProperties);
        }
        catch (Exception ex)
        {

            throw;
        }
    }


<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=301879
  -->
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
//
//

  </connectionStrings>
  <appSettings>
//
  </appSettings>

  <system.web>

    <authentication mode="None" />
    <compilation debug="true" targetFramework="4.5" />
  <httpRuntime targetFramework="4.5" maxRequestLength="102400" executionTimeout="2100" />
  </system.web>
  <system.webServer>
    <security>
      <requestFiltering>
        <!-- 100 MB in bytes -->
        <requestLimits maxAllowedContentLength="104857600" maxQueryString="104857600" />
      </requestFiltering>
    </security>
    <modules>
      <remove name="FormsAuthentication" />
    </modules>
    <handlers>
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.OAuth" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />
        <bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.4.0" newVersion="5.6.4.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Services.Client" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.4.0" newVersion="5.6.4.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.OData" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.4.0" newVersion="5.6.4.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Ninject" publicKeyToken="c7192dc5380945e7" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.2.0.0" newVersion="3.2.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
    </compilers>
  </system.codedom>
</configuration>

【问题讨论】：

你能发布你的完整网络配置吗？
刚刚添加了Web Api的web.config。 @jdruid

标签： azure iis web-config blob storage

【解决方案1】：

Azure 存储对您可以上传的 blob 大小有限制。所有细节都可以在文档here 中找到，但我摘录了一个相关部分：

通过 Put Blob 创建的块 Blob 的最大大小为 64 MB。如果您的 blob 大于 64 MB，则必须将其作为一组块上传。有关更多信息，请参阅 Put Block 和 Put Block List 操作。如果您将 Blob 作为一组块上传，则无需调用 Put Blob。

如果您尝试上传大于 64 MB 的块 Blob 或大于 1 TB 的页 Blob，服务会返回状态代码 413（请求实体太大）。 Blob 服务还会在响应中返回有关错误的其他信息，包括允许的最大 Blob 大小（以字节为单位）。

【讨论】：

64mb 对我来说已经足够了。显然这不是我目前的问题。我会检查 IIS 设置

【解决方案2】：

好的。我可以通过将 SingleBlobUploadTresholdInBytes 设置为最大值来解决我的问题。价值。不确定这是否是正确的解决方案。这是参考。 https://msdn.microsoft.com/en-us/library/microsoft.windowsazure.storage.blob.blobrequestoptions.singleblobuploadthresholdinbytes(v=azure.10).aspx

        BlobRequestOptions options = new BlobRequestOptions();
        options.SingleBlobUploadThresholdInBytes = 67108860;
        blob.UploadFromByteArray(fileStream, 0, fileStream.Length, options:options);

【讨论】：