为 ASP.NET 网站配置 Application Insights

此过程将 ASP.NET Web 应用配置为将遥测数据发送到 Azure Monitor 服务的 Application Insights 功能。 这适用于托管在你自己的本地或云端 IIS 服务器上的 ASP.NET 应用。

先决条件

若要要将 Application Insights 添加到 ASP.NET 网站,需要:

重要

建议使用连接字符串替代检测密钥。 新的 Azure 区域要求使用连接字符串而不是检测密钥。

连接字符串标识要与遥测数据关联的资源。 它还允许你修改可供你的资源将其用作遥测目标的终结点。 你需要复制连接字符串,并将其添加到应用程序的代码或环境变量中。

创建基本的 ASP.NET Web 应用

  1. 打开 Visual Studio 2019。
  2. 选择“文件” > “新建” > “项目” 。
  3. 选择“ASP.NET Web 应用程序(.NET Framework) C#”。
  4. 输入项目名称并选择“创建”。
  5. 选择“MVC” > “创建” 。

自动添加 Application Insights

本部分将指导你将 Application Insights 自动添加到基于模板的 ASP.NET Web 应用。 在 Visual Studio 中的 ASP.NET Web 应用项目中,请执行以下操作:

  1. 选择“添加 Application Insights 遥测” > “Application Insights Sdk (本地)” > “下一步” > “完成” > “关闭” 。

  2. 打开 ApplicationInsights.config 文件。

  3. 在结束 </ApplicationInsights> 标记之前,添加包含 Application Insights 资源检测密钥的一行。 可以在新建的 Application Insights 资源的“概述”窗格中找到检测密钥,我们已将其创建为本文的先决条件之一。

    <InstrumentationKey>your-instrumentation-key-goes-here</InstrumentationKey>
    
  4. 选择“项目” > “管理 NuGet 包” > “更新”。 然后将每个 Microsoft.ApplicationInsights NuGet 包更新到最新的稳定版本。

  5. 通过选择“IIS Express”来运行应用程序。 基本 ASP.NET 应用开始运行。 浏览站点上的页面时,遥测数据将被发送到 Application Insights。

手动添加 Application Insights

本部分将指导你将 Application Insights 手动添加到基于模板的 ASP.NET Web 应用。 本部分假定你使用的是 Web 应用,而其采用了基于面向 ASP.NET Framework 的标准 MVC Web 应用模板。

  1. 将以下 NuGet 包及其依赖项添加到项目中:

  2. 在某些情况下,系统会自动创建 ApplicationInsights.config 文件。 如果该文件已存在,请跳到步骤 4。

    如果没有自动创建,则需要自行创建。 在项目中与 Global.asax 文件相同的级别,创建名为 ApplicationInsights.config 的新文件。

  3. 将以下 XML 配置复制到新创建的文件中:

    <?xml version="1.0" encoding="utf-8"?>
    <ApplicationInsights xmlns="http://schemas.microsoft.com/ApplicationInsights/2013/Settings">
     <TelemetryInitializers>
       <Add Type="Microsoft.ApplicationInsights.DependencyCollector.HttpDependenciesParsingTelemetryInitializer, Microsoft.AI.DependencyCollector" />
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.AzureRoleEnvironmentTelemetryInitializer, Microsoft.AI.WindowsServer" />
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.BuildInfoConfigComponentVersionTelemetryInitializer, Microsoft.AI.WindowsServer" />
       <Add Type="Microsoft.ApplicationInsights.Web.WebTestTelemetryInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.SyntheticUserAgentTelemetryInitializer, Microsoft.AI.Web">
         <!-- Extended list of bots:
               search|spider|crawl|Bot|Monitor|BrowserMob|BingPreview|PagePeeker|WebThumb|URL2PNG|ZooShot|GomezA|Google SketchUp|Read Later|KTXN|KHTE|Keynote|Pingdom|AlwaysOn|zao|borg|oegp|silk|Xenu|zeal|NING|htdig|lycos|slurp|teoma|voila|yahoo|Sogou|CiBra|Nutch|Java|JNLP|Daumoa|Genieo|ichiro|larbin|pompos|Scrapy|snappy|speedy|vortex|favicon|indexer|Riddler|scooter|scraper|scrubby|WhatWeb|WinHTTP|voyager|archiver|Icarus6j|mogimogi|Netvibes|altavista|charlotte|findlinks|Retreiver|TLSProber|WordPress|wsr-agent|http client|Python-urllib|AppEngine-Google|semanticdiscovery|facebookexternalhit|web/snippet|Google-HTTP-Java-Client-->
         <Filters>search|spider|crawl|Bot|Monitor|AlwaysOn</Filters>
       </Add>
       <Add Type="Microsoft.ApplicationInsights.Web.ClientIpHeaderTelemetryInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.AzureAppServiceRoleNameFromHostNameHeaderInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.OperationNameTelemetryInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.OperationCorrelationTelemetryInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.UserTelemetryInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.AuthenticatedUserIdTelemetryInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.AccountIdTelemetryInitializer, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.SessionTelemetryInitializer, Microsoft.AI.Web" />
     </TelemetryInitializers>
     <TelemetryModules>
       <Add Type="Microsoft.ApplicationInsights.DependencyCollector.DependencyTrackingTelemetryModule, Microsoft.AI.DependencyCollector">
         <ExcludeComponentCorrelationHttpHeadersOnDomains>
           <!-- 
           Requests to the following hostnames will not be modified by adding correlation headers.         
           Add entries here to exclude additional hostnames.
           NOTE: this configuration will be lost upon NuGet upgrade.
           -->
           <Add>core.chinacloudapi.cn</Add>
           <Add>core.chinacloudapi.cn</Add>
           <Add>core.cloudapi.de</Add>
           <Add>core.usgovcloudapi.net</Add>
         </ExcludeComponentCorrelationHttpHeadersOnDomains>
         <IncludeDiagnosticSourceActivities>
           <Add>Microsoft.Azure.EventHubs</Add>
           <Add>Microsoft.Azure.ServiceBus</Add>
         </IncludeDiagnosticSourceActivities>
       </Add>
       <Add Type="Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.PerformanceCollectorModule, Microsoft.AI.PerfCounterCollector">
         <!--
         Use the following syntax here to collect additional performance counters:
    
         <Counters>
           <Add PerformanceCounter="\Process(??APP_WIN32_PROC??)\Handle Count" ReportAs="Process handle count" />
           ...
         </Counters>
    
         PerformanceCounter must be either \CategoryName(InstanceName)\CounterName or \CategoryName\CounterName
    
         NOTE: performance counters configuration will be lost upon NuGet upgrade.
    
         The following placeholders are supported as InstanceName:
           ??APP_WIN32_PROC?? - instance name of the application process  for Win32 counters.
           ??APP_W3SVC_PROC?? - instance name of the application IIS worker process for IIS/ASP.NET counters.
           ??APP_CLR_PROC?? - instance name of the application CLR process for .NET counters.
         -->
       </Add>
       <Add Type="Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.QuickPulse.QuickPulseTelemetryModule, Microsoft.AI.PerfCounterCollector" />
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.AppServicesHeartbeatTelemetryModule, Microsoft.AI.WindowsServer" />
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.AzureInstanceMetadataTelemetryModule, Microsoft.AI.WindowsServer">
         <!--
         Remove individual fields collected here by adding them to the ApplicationInsighs.HeartbeatProvider 
         with the following syntax:
    
         <Add Type="Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.DiagnosticsTelemetryModule, Microsoft.ApplicationInsights">
           <ExcludedHeartbeatProperties>
             <Add>osType</Add>
             <Add>location</Add>
             <Add>name</Add>
             <Add>offer</Add>
             <Add>platformFaultDomain</Add>
             <Add>platformUpdateDomain</Add>
             <Add>publisher</Add>
             <Add>sku</Add>
             <Add>version</Add>
             <Add>vmId</Add>
             <Add>vmSize</Add>
             <Add>subscriptionId</Add>
             <Add>resourceGroupName</Add>
             <Add>placementGroupId</Add>
             <Add>tags</Add>
             <Add>vmScaleSetName</Add>
           </ExcludedHeartbeatProperties>
         </Add>
    
         NOTE: exclusions will be lost upon upgrade.
         -->
       </Add>
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.DeveloperModeWithDebuggerAttachedTelemetryModule, Microsoft.AI.WindowsServer" />
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.UnhandledExceptionTelemetryModule, Microsoft.AI.WindowsServer" />
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.UnobservedExceptionTelemetryModule, Microsoft.AI.WindowsServer">
         <!--</Add>
       <Add Type="Microsoft.ApplicationInsights.WindowsServer.FirstChanceExceptionStatisticsTelemetryModule, Microsoft.AI.WindowsServer">-->
       </Add>
       <Add Type="Microsoft.ApplicationInsights.Web.RequestTrackingTelemetryModule, Microsoft.AI.Web">
         <Handlers>
           <!-- 
           Add entries here to filter out additional handlers: 
    
           NOTE: handler configuration will be lost upon NuGet upgrade.
           -->
           <Add>Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.RequestDataHttpHandler</Add>
           <Add>System.Web.StaticFileHandler</Add>
           <Add>System.Web.Handlers.AssemblyResourceLoader</Add>
           <Add>System.Web.Optimization.BundleHandler</Add>
           <Add>System.Web.Script.Services.ScriptHandlerFactory</Add>
           <Add>System.Web.Handlers.TraceHandler</Add>
           <Add>System.Web.Services.Discovery.DiscoveryRequestHandler</Add>
           <Add>System.Web.HttpDebugHandler</Add>
         </Handlers>
       </Add>
       <Add Type="Microsoft.ApplicationInsights.Web.ExceptionTrackingTelemetryModule, Microsoft.AI.Web" />
       <Add Type="Microsoft.ApplicationInsights.Web.AspNetDiagnosticTelemetryModule, Microsoft.AI.Web" />
     </TelemetryModules>
     <ApplicationIdProvider Type="Microsoft.ApplicationInsights.Extensibility.Implementation.ApplicationId.ApplicationInsightsApplicationIdProvider, Microsoft.ApplicationInsights" />
     <TelemetrySinks>
       <Add Name="default">
         <TelemetryProcessors>
           <Add Type="Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.QuickPulse.QuickPulseTelemetryProcessor, Microsoft.AI.PerfCounterCollector" />
           <Add Type="Microsoft.ApplicationInsights.Extensibility.AutocollectedMetricsExtractor, Microsoft.ApplicationInsights" />
           <Add Type="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel.AdaptiveSamplingTelemetryProcessor, Microsoft.AI.ServerTelemetryChannel">
             <MaxTelemetryItemsPerSecond>5</MaxTelemetryItemsPerSecond>
             <ExcludedTypes>Event</ExcludedTypes>
           </Add>
           <Add Type="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel.AdaptiveSamplingTelemetryProcessor, Microsoft.AI.ServerTelemetryChannel">
             <MaxTelemetryItemsPerSecond>5</MaxTelemetryItemsPerSecond>
             <IncludedTypes>Event</IncludedTypes>
           </Add>
         </TelemetryProcessors>
         <TelemetryChannel Type="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel.ServerTelemetryChannel, Microsoft.AI.ServerTelemetryChannel" />
       </Add>
     </TelemetrySinks>
     <!-- 
       Learn more about Application Insights configuration with ApplicationInsights.config here: 
       http://go.microsoft.com/fwlink/?LinkID=513840
     -->
     <InstrumentationKey>your-instrumentation-key-here</InstrumentationKey>
    </ApplicationInsights>
    
  4. 在结束标记 </ApplicationInsights> 之前,添加 Application Insights 资源的检测密钥。 可以在新建的 Application Insights 资源的“概述”窗格中找到检测密钥,我们已将其创建为本文的先决条件之一。

    <InstrumentationKey>your-instrumentation-key-goes-here</InstrumentationKey>
    
  5. 在项目中与 ApplicationInsights.config 文件相同的级别,创建包含名为 AiHandleErrorAttribute.cs 的新 C# 文件的文件夹,将其命名为 ErrorHandler。 文件的内容将如下所示:

    using System;
    using System.Web.Mvc;
    using Microsoft.ApplicationInsights;
    
    namespace WebApplication10.ErrorHandler //namespace will vary based on your project name
    {
        [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = true)] 
        public class AiHandleErrorAttribute : HandleErrorAttribute
        {
            public override void OnException(ExceptionContext filterContext)
            {
                if (filterContext != null && filterContext.HttpContext != null && filterContext.Exception != null)
                {
                    //If customError is Off, then AI HTTPModule will report the exception
                    if (filterContext.HttpContext.IsCustomErrorEnabled)
                    {   
                        var ai = new TelemetryClient();
                        ai.TrackException(filterContext.Exception);
                    } 
                }
                base.OnException(filterContext);
            }
        }
    }
    
    
  6. 在 App_Start 文件夹中,打开 FilterConfig.cs 文件,并更改该文件以匹配示例:

    using System.Web;
    using System.Web.Mvc;
    
    namespace WebApplication10 //Namespace will vary based on project name
    {
        public class FilterConfig
        {
            public static void RegisterGlobalFilters(GlobalFilterCollection filters)
            {
                filters.Add(new ErrorHandler.AiHandleErrorAttribute());
            }
        }
    }
    
  7. 如果 Web.config 已更新,请跳过此步骤。 否则,按如下所示更新文件:

    <?xml version="1.0" encoding="utf-8"?>
    <!--
      For more information on how to configure your ASP.NET application, please visit
      https://go.microsoft.com/fwlink/?LinkId=301880
      -->
    <configuration>
      <appSettings>
        <add key="webpages:Version" value="3.0.0.0" />
        <add key="webpages:Enabled" value="false" />
        <add key="ClientValidationEnabled" value="true" />
        <add key="UnobtrusiveJavaScriptEnabled" value="true" />
      </appSettings>
      <system.web>
        <compilation debug="true" targetFramework="4.7.2" />
        <httpRuntime targetFramework="4.7.2" />
        <!-- Code added for Application Insights start -->
        <httpModules>
          <add name="TelemetryCorrelationHttpModule" type="Microsoft.AspNet.TelemetryCorrelation.TelemetryCorrelationHttpModule, Microsoft.AspNet.TelemetryCorrelation" />
          <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" />
        </httpModules>
        <!-- Code added for Application Insights end -->
      </system.web>
      <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
          <dependentAssembly>
            <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" />
            <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
          </dependentAssembly>
          <dependentAssembly>
            <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" />
            <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
          </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="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
          </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.WebPages" 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="1.0.0.0-5.2.7.0" newVersion="5.2.7.0" />
          </dependentAssembly>
          <!-- Code added for Application Insights start -->
          <dependentAssembly>
            <assemblyIdentity name="System.Memory" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
            <bindingRedirect oldVersion="0.0.0.0-4.0.1.1" newVersion="4.0.1.1" />
          </dependentAssembly>
          <!-- Code added for Application Insights end -->
        </assemblyBinding>
      </runtime>
      <system.codedom>
        <compilers>
          <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
          <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
        </compilers>
      </system.codedom>
      <system.webServer>
        <validation validateIntegratedModeConfiguration="false" />
        <!-- Code added for Application Insights start -->
        <modules>
          <remove name="TelemetryCorrelationHttpModule" />
          <add name="TelemetryCorrelationHttpModule" type="Microsoft.AspNet.TelemetryCorrelation.TelemetryCorrelationHttpModule, Microsoft.AspNet.TelemetryCorrelation" preCondition="managedHandler" />
          <remove name="ApplicationInsightsWebTracking" />
          <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" preCondition="managedHandler" />
        </modules>
        <!-- Code added for Application Insights end -->
      </system.webServer>
    </configuration>
    
    

现在已成功配置服务器端应用程序监视。 如果运行 Web 应用,将能够看到遥测数据开始出现在 Application Insights 中。

添加客户端监视

前面几个部分提供了有关自动和手动配置服务器端监视的方法的指导。 若要添加客户端监视,请使用客户端 JavaScript SDK。 可以通过在页面 HTML 的结束标记 </head> 之前添加 JavaScript 代码片段来监视任何网页的客户端事务。

尽管可以手动将代码片段添加到每个 HTML 页的标头,但建议改为将代码片段添加到主页面。 该操作会将代码片段注入站点的所有页面。

对于本文中基于模板的 ASP.NET MVC 应用,需要编辑的文件为 _Layout.cshtml。 可以在“视图” > “共享”中找到该文件。 若要添加客户端监视,请打开 _Layout.cshtml,并按照有关客户端 JavaScript SDK 配置一文的基于代码片段的设置说明进行操作。

疑难解答

Visual Studio 2019 的当前版本中存在一个已知问题:将检测密钥存储在用户机密中这项操作对基于 .NET Framework 的应用无效。 密钥最终必须硬编码到 applicationinsights.config 文件中,以修复此 bug。 本文旨在通过不使用用户密码来完全避免此问题。

开源 SDK

阅读代码或为其做出贡献

有关最新的更新和 bug 修复,请参阅发行说明

后续步骤

  • 配置采样以帮助降低遥测数据流量和数据存储费用。