RazorLight.Compilation 异常：无法编译生成的 Razor 模板
RazorLight.Compilation Exception: Failed to compile generated Razor template
我正在创建一个 .NET 5 worker service 应用程序，该应用程序很少关注其他应用程序并在需要时发送电子邮件。
我正在使用 FluentEmail 发送这些电子邮件并且一切正常，直到我部署该应用程序。
当我部署应用程序并尝试发送电子邮件时，它抛出此异常：
RazorLight.Compilation.TemplateCompilationException: Failed to compile generated Razor template:
- (3:35) The type 'Attribute' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (3:10) The type 'Type' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (35:37) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (38:66) 'GeneratedTemplate.ExecuteAsync()': return type must be 'Task' to match overridden member 'TemplatePageBase.ExecuteAsync()'
- (38:66) The type 'Task' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (40:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (41:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (42:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (43:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (53:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (69:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (84:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (44:19) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (92:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (47:20) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (100:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (50:20) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (108:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (53:19) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (116:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (124:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
See CompilationErrors for detailed information
at RazorLight.Compilation.RoslynCompilationService.CompileAndEmit(IGeneratedRazorTemplate razorTemplate)
at RazorLight.Compilation.RazorTemplateCompiler.CompileAndEmit(RazorLightProjectItem projectItem)
at RazorLight.Compilation.RazorTemplateCompiler.OnCacheMissAsync(String templateKey)
--- End of stack trace from previous location ---
at RazorLight.EngineHandler.CompileTemplateAsync(String key)
at RazorLight.EngineHandler.CompileRenderAsync[T](String key, T model, ExpandoObject viewBag)
at CallSite.Target(Closure , CallSite , Object )
at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
at FluentEmail.Razor.RazorRenderer.ParseAsync[T](String template, T model, Boolean isHtml)
at FluentEmail.Razor.RazorRenderer.FluentEmail.Core.Interfaces.ITemplateRenderer.Parse[T](String template, T model, Boolean isHtml)
at FluentEmail.Core.Email.UsingTemplateFromFile[T](String filename, T model, Boolean isHtml)
at WatchDog.Services.NotificationService.SendEmailAsync[TModel](String subject, String fileName, TModel model) in C:\Users\SomeOne\source\repos\WatchDog\WatchDog\Services\NotificationService.cs:line 41
我的设置如下所示：
视图文件夹
参考资料
视图文件夹
我添加了 Views 文件夹，请注意这是一个 .NET 5 Worker Service 项目（如果这很重要，而不是某个 Web 项目）。
Program.cs 文件:
在 ConfigureServices 中，我将 RazorRenderer 添加为：
//Set email service using FluentEmail
services.AddFluentEmail("appname@domain.com")
.AddRazorRenderer(@$"{Directory.GetCurrentDirectory()}/Views/")
.AddSmtpSender("smtp.somesmtp.com", 25)
.AddSmtpSender(new System.Net.Mail.SmtpClient() { });
NotificationService.cs 文件:
private async Task SendEmailAsync<TModel>(string subject, TModel model)
{
try
{
using (var scope = _serviceProvider.CreateScope())
{
var email = await scope.ServiceProvider.GetRequiredService<IFluentEmail>()
.To(string.Join(";", _emailRecipients))
.Subject(subject)
.UsingTemplateFromFile("./Views/Emails/SomeReport.cshtml", model)
.SendAsync();
}
}
catch (Exception ex)
{
_logger.LogError(ex, "Failed to send email. Check exception for more information.");
}
}
SomeReport.cshtml 文件:
SomeReport.cshtml 在 Views\Emails\SomeReport.cshtml 里面，看起来像这样：
@using System.Collections.Generic;
@using WatchDog.Models;
@model IEnumerable<SomeReport>
@{
Layout = "./Shared/_Layout.cshtml";
}
@* Work with the Model here... *@
_Layout.cshtml 文件:
_Layout.cshtml 在 Views\Shared\_Layout.cshtml 里面，看起来像这样：
@* Some common layout styles here *@
@RenderBody()
WatchDog.csproj 文件:
我还添加了 PreserveCompilationContext 和 PreserveCompilationReferences:
<PropertyGroup>
<TargetFramework>net5.0</TargetFramework>
<PreserveCompilationContext>true</PreserveCompilationContext>
<PreserveCompilationReferences>true</PreserveCompilationReferences>
</PropertyGroup>
我到处都看了，仍然没有找到解决办法。
请帮忙。
谢谢！
我遇到了完全相同的问题，但仅限于我已发布的应用程序。调试辅助服务时我没有收到错误消息。
为我解决的问题是从 dotnet publish 命令中删除 p:PublishTrimmed=true 属性。
为了完整起见，我的 .csproj 文件是这样的：
<PropertyGroup>
<PreserveCompilationReferences>true</PreserveCompilationReferences>
<PreserveCompilationContext>true</PreserveCompilationContext>
<MvcRazorCompileOnPublish>false</MvcRazorCompileOnPublish>
<MvcRazorExcludeRefAssembliesFromPublish>false</MvcRazorExcludeRefAssembliesFromPublish>
</PropertyGroup>
参考文献：
我正在创建一个 .NET 5 worker service 应用程序，该应用程序很少关注其他应用程序并在需要时发送电子邮件。
我正在使用 FluentEmail 发送这些电子邮件并且一切正常，直到我部署该应用程序。
当我部署应用程序并尝试发送电子邮件时，它抛出此异常：
RazorLight.Compilation.TemplateCompilationException: Failed to compile generated Razor template:
- (3:35) The type 'Attribute' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (3:10) The type 'Type' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (35:37) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (38:66) 'GeneratedTemplate.ExecuteAsync()': return type must be 'Task' to match overridden member 'TemplatePageBase.ExecuteAsync()'
- (38:66) The type 'Task' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (40:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (41:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (42:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (43:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (53:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (69:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (84:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (44:19) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (92:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (47:20) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (100:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (50:20) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (108:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (53:19) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (116:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
- (124:12) The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
See CompilationErrors for detailed information
at RazorLight.Compilation.RoslynCompilationService.CompileAndEmit(IGeneratedRazorTemplate razorTemplate)
at RazorLight.Compilation.RazorTemplateCompiler.CompileAndEmit(RazorLightProjectItem projectItem)
at RazorLight.Compilation.RazorTemplateCompiler.OnCacheMissAsync(String templateKey)
--- End of stack trace from previous location ---
at RazorLight.EngineHandler.CompileTemplateAsync(String key)
at RazorLight.EngineHandler.CompileRenderAsync[T](String key, T model, ExpandoObject viewBag)
at CallSite.Target(Closure , CallSite , Object )
at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
at FluentEmail.Razor.RazorRenderer.ParseAsync[T](String template, T model, Boolean isHtml)
at FluentEmail.Razor.RazorRenderer.FluentEmail.Core.Interfaces.ITemplateRenderer.Parse[T](String template, T model, Boolean isHtml)
at FluentEmail.Core.Email.UsingTemplateFromFile[T](String filename, T model, Boolean isHtml)
at WatchDog.Services.NotificationService.SendEmailAsync[TModel](String subject, String fileName, TModel model) in C:\Users\SomeOne\source\repos\WatchDog\WatchDog\Services\NotificationService.cs:line 41
我的设置如下所示：
| 视图文件夹 | 参考资料 |
|---|---|
| 视图文件夹 |
|---|
我添加了 Views 文件夹，请注意这是一个 .NET 5 Worker Service 项目（如果这很重要，而不是某个 Web 项目）。
| Program.cs 文件: |
|---|
在 ConfigureServices 中，我将 RazorRenderer 添加为：
//Set email service using FluentEmail
services.AddFluentEmail("appname@domain.com")
.AddRazorRenderer(@$"{Directory.GetCurrentDirectory()}/Views/")
.AddSmtpSender("smtp.somesmtp.com", 25)
.AddSmtpSender(new System.Net.Mail.SmtpClient() { });
| NotificationService.cs 文件: |
|---|
private async Task SendEmailAsync<TModel>(string subject, TModel model)
{
try
{
using (var scope = _serviceProvider.CreateScope())
{
var email = await scope.ServiceProvider.GetRequiredService<IFluentEmail>()
.To(string.Join(";", _emailRecipients))
.Subject(subject)
.UsingTemplateFromFile("./Views/Emails/SomeReport.cshtml", model)
.SendAsync();
}
}
catch (Exception ex)
{
_logger.LogError(ex, "Failed to send email. Check exception for more information.");
}
}
| SomeReport.cshtml 文件: |
|---|
SomeReport.cshtml 在 Views\Emails\SomeReport.cshtml 里面，看起来像这样：
@using System.Collections.Generic;
@using WatchDog.Models;
@model IEnumerable<SomeReport>
@{
Layout = "./Shared/_Layout.cshtml";
}
@* Work with the Model here... *@
| _Layout.cshtml 文件: |
|---|
_Layout.cshtml 在 Views\Shared\_Layout.cshtml 里面，看起来像这样：
@* Some common layout styles here *@
@RenderBody()
| WatchDog.csproj 文件: |
|---|
我还添加了 PreserveCompilationContext 和 PreserveCompilationReferences:
<PropertyGroup>
<TargetFramework>net5.0</TargetFramework>
<PreserveCompilationContext>true</PreserveCompilationContext>
<PreserveCompilationReferences>true</PreserveCompilationReferences>
</PropertyGroup>
我到处都看了，仍然没有找到解决办法。 请帮忙。
谢谢！
我遇到了完全相同的问题，但仅限于我已发布的应用程序。调试辅助服务时我没有收到错误消息。
为我解决的问题是从 dotnet publish 命令中删除 p:PublishTrimmed=true 属性。
为了完整起见，我的 .csproj 文件是这样的：
<PropertyGroup>
<PreserveCompilationReferences>true</PreserveCompilationReferences>
<PreserveCompilationContext>true</PreserveCompilationContext>
<MvcRazorCompileOnPublish>false</MvcRazorCompileOnPublish>
<MvcRazorExcludeRefAssembliesFromPublish>false</MvcRazorExcludeRefAssembliesFromPublish>
</PropertyGroup>
参考文献：