当我为我的ASP.Net Core 1.1应用程序启用browserLink时,我在浏览器中收到以下错误,我认为因为browserLink不起作用.
browser Link: Exception thrown when trying to invoke browser Link extension callback "microsoft.visualstudio.web.browserlink.sourcemappingextensionfactory.getCssMappingData": System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.VsWebUrlUtil.EnsureAbsoluteUrl(IVsHierarchy hierarchy,Uri& path) at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.VsWebUrlUtil.GetSimpleVsWebUrlFromUrl(IVsHierarchy hierarchy,Uri url,ILocationContainer& container) at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.VsWebUrlUtil.GetVsWebUrlFromUrl(IVsHierarchy hierarchy,Uri url) at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.LazyLocationContainer.LazyLocationContainerFromUrl.CreateActualLocationContainer() at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.LazyLocationContainer.GetPhysicalPath(Uri& physicalPath) at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.DocumentLocation.Microsoft.VisualStudio.Web.Extensions.Common.Helpers.IDocumentLocation.GetPhysicalPath(Uri& physicalPath) at Microsoft.VisualStudio.Web.browserLink.sourceMappingExtension.getCssMappingData(String cssUrl,String[] selectors) --- End of inner exception stack trace --- at System.RuntimeMethodHandle.InvokeMethod(Object target,Object[] arguments,Signature sig,Boolean constructor) at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj,Object[] parameters,Object[] arguments) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj,BindingFlags invokeAttr,Binder binder,CultureInfo culture) at Microsoft.VisualStudio.Web.browserLink.ClientMessaging.dispatchMessage(browserLinkConnection connection,MessageArgs obj) browser Link: Exception thrown when trying to invoke browser Link extension callback "microsoft.visualstudio.web.browserlink.autosyncextensionfactory.trackCssDocuments": System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.VsWebUrlUtil.EnsureAbsoluteUrl(IVsHierarchy hierarchy,Uri url) at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.LazyLocationContainer.LazyLocationContainerFromUrl.CreateActualLocationContainer() at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.LazyLocationContainer.GetPhysicalPath(Uri& physicalPath) at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.DocumentLocation.Microsoft.VisualStudio.Web.Extensions.Common.Helpers.IDocumentLocation.GetPhysicalPath(Uri& physicalPath) at Microsoft.VisualStudio.Web.Extensions.Common.Helpers.DocumentLocation.Microsoft.VisualStudio.Web.Extensions.Common.Helpers.IDocumentLocation.get_PhysicalFileExists() at Microsoft.VisualStudio.Web.browserLink.AutoSyncExtension.trackCssDocuments(String[] trackHrefs,String[] untrackHrefs) --- End of inner exception stack trace --- at System.RuntimeMethodHandle.InvokeMethod(Object target,MessageArgs obj) browser Link: Failed to invoke return value callback: TypeError: Cannot read property 'files' of null
我已将我的应用程序配置如下：
.csproj配置：
<ItemGroup>
<packagereference Include="AutoMapper" Version="5.2.0" />
<packagereference Include="AutoMapper.Extensions.Microsoft.DependencyInjection" Version="1.2.0" />
<packagereference Include="BundlerMinifier.Core" Version="2.4.337" />
<packagereference Include="IdentityModel" Version="2.5.1" />
<packagereference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.1" />
<packagereference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="1.1.1" />
<packagereference Include="Microsoft.AspNetCore.Diagnostics" Version="1.1.1" />
<packagereference Include="Microsoft.AspNetCore" Version="1.1.1" />
<packagereference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
<packagereference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
<packagereference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.1" PrivateAssets="All" />
<packagereference Include="Microsoft.EntityFrameworkCore.sqlServer" Version="1.1.1" />
<packagereference Include="Microsoft.EntityFrameworkCore.sqlServer.Design" Version="1.1.1" PrivateAssets="All" />
<packagereference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.1.0" PrivateAssets="All" />
<packagereference Include="Microsoft.Extensions.Configuration.Environmentvariables" Version="1.1.1" />
<packagereference Include="Microsoft.Extensions.Configuration.Json" Version="1.1.1" />
<packagereference Include="Microsoft.Extensions.Logging" Version="1.1.1" />
<packagereference Include="Microsoft.Extensions.Logging.Console" Version="1.1.1" />
<packagereference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.1" />
<packagereference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="1.1.1" />
<packagereference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.1.0" PrivateAssets="All" />
<packagereference Include="Microsoft.VisualStudio.Web.browserLink" Version="1.1.0" />
<packagereference Include="Serilog.Extensions.Logging.File" Version="1.0.0" />
</ItemGroup>
<ItemGroup>
<DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.0" />
<DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.0" />
</ItemGroup>
<Target Name="PrepublishScript" BeforeTargets="PrepareForPublish">
<Exec Command="bower install" />
<Exec Command="dotnet bundle" />
</Target>
在Configure方法的Startup.cs文件中,我调用了app.UsebrowserLink();.
UPDATE
似乎错误与* .css文件有关.如果我删除所有CSS链接,我只会收到以下错误：
browser Link: Failed to invoke return value callback: TypeError: Cannot read property 'files' of null
解决方法
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