JSReport：ASP.net 核心部署 - 无法加载文件或程序集 jsreport.Local

Question

我正在使用 ASP.net Core 3.0，我想要 html to pdf 导出功能，我找到了 JSReport 作为解决方案所以我按照 JSReport .net SDK 的 Jon Blaha's Implementation 导出html 到 pdf，我已经在我的开发机器上成功安装了 nugets jsReport.Binary、jsReport.Local 和 jsReport.AspNetCore。以下是已安装的 dll

jsReport.AspNetCore.dll (v2.0.2.0)
jsReport.Client.dll (v3.0.1.0)
jsReport.Local.dll (v2.2.2.0)
jsReport.Shared.dll (v2.1.0.0)
jsReport.Types.dll (v2.6.1.0)
jsReport.Binary.dll (v2.7.1.0)

我遵循了 Jon Blaha 的实现并且 Export html to pdf 在我的开发机器上运行良好。但是当我用我的项目发布的 dll 上传 dll 时，我的应用程序停止工作

an error occurred while starting the application

我搜索了此错误，发现我必须使用

通过我的 web.config 启用日志记录

stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout"

获取启动失败背后的实际错误消息。

对我的 web.config 进行必要的更改后，我得到了生成的日志文件，它说

System.IO.FileNotFoundException: Could not load file or assembly 'jsreport.Local, Version=2.2.2.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.

crit: Microsoft.AspNetCore.Hosting.Diagnostics[6]
      Application startup exception
System.IO.FileNotFoundException: Could not load file or assembly 'jsreport.Local, Version=2.2.2.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.
File name: 'jsreport.Local, Version=2.2.2.0, Culture=neutral, PublicKeyToken=null'
   at Technicianspk.Startup.ConfigureServices(IServiceCollection services)
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.AspNetCore.Hosting.ConfigureServicesBuilder.InvokeCore(Object instance, IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.ConfigureServicesBuilder.<>c__DisplayClass9_0.<Invoke>g__Startup|0(IServiceCollection serviceCollection)
   at Microsoft.AspNetCore.Hosting.ConfigureServicesBuilder.Invoke(Object instance, IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.ConfigureServicesBuilder.<>c__DisplayClass8_0.<Build>b__0(IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.UseStartup(Type startupType, HostBuilderContext context, IServiceCollection services)
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass13_0.<UseStartup>b__2(IApplicationBuilder app)
   at Microsoft.AspNetCore.Server.IISIntegration.IISSetupFilter.<>c__DisplayClass4_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken)

我使用 FileZilla 通过 FTP 仔细检查了我的 wwwroot 目录，我的服务器上有所有这些必需的 jsReport dll，但我仍然找不到文件。

我什至比较了 dll 版本并确保我的 .csproj 文件引用了所有必需的 jsreport dll，但仍然无法找到 jsReport.Local.dll。

我的开发机器和服务器的 wwwroot 目录中都有 jsReport.Local.dll，所有其他 dll 都存在，包括我的 project.dll 和 project.views.dll 以及 project.exe 等.

我的cs.proj文件还有以下内容

<ItemGroup>
 <PackageReference Include="jsreport.AspNetCore" Version="2.0.2" />
 <PackageReference Include="jsreport.Binary" Version="2.7.1" />
 <PackageReference Include="jsreport.Client" Version="3.0.1" />
 <PackageReference Include="jsreport.Local" Version="2.2.2" />
 <PackageReference Include="jsreport.Shared" Version="2.1.0" />
 <PackageReference Include="jsreport.Types" Version="2.6.1" />
</ItemGroup>

Answer 1

正如 Jan Blaha 在 Github issue 上所建议的那样。

Please try to create just a hello world app. Does it work there? Please upload somewhere your project and how the deployment output looks like.

I tried preparing a new asp.net core mvc 3 app. Referenced jsreport. Published to the folder and there is no issue when running the asp.net server through outputted exe.

我创建了一个新的 hello world 应用程序并引用了 jsReport 并将其发布并上传到我的子域以进行测试。我有几个原因导致它不起作用

There was a file permission issue on my server

jsReport tried to create a folder on the root directory called 'jsReport' that was not being created because of folder access rights (file permission issues)

I was not uploading 2 of json files projectname.deps.json and projectname.runtimeconfig.json during my uploading process

对我的主域进行上述更改后，网站终于开始工作了！

Answer 2

我在 Startup.cs

中使用此代码解决了我的问题

services.AddJsReport(new LocalReporting()
                .KillRunningJsReportProcesses()
                .UseBinary(JsReportBinary.GetBinary())
                .AsUtility()
                .KeepAlive(false)
                .Create()
            );

JSReport：ASP.net 核心部署 - 无法加载文件或程序集 jsreport.Local

JSReport: ASP.net Core Deployment - Could not load file or assembly jsreport.Local

dll

filenotfoundexception

web-deployment

jsreport

asp.net-core