本文介绍了找不到文件异常Visual Studio 2015的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
尽管我在项目目录中有所需的文件,但是却出现找不到文件"错误.没有编译错误.
I am getting file not found error though I have the needed file inside the project directory.There are no compilation errors.
这是我的startup.cs类:
Here is my startup.cs class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Configuration;
namespace OdeToFood
{
public class Startup
{
public Startup()
{
var builder = new ConfigurationBuilder()
.AddJsonFile("config.json");
Configuration = builder.Build();
}
public IConfiguration Configuration { get; set; }
// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole();
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.Run(async (context) =>
{
var message = Configuration["greeting"];
await context.Response.WriteAsync(message);
});
}
}
}
这是我在构建它时收到的错误消息.
And this is the error message I get when I build it.
System.IO.FileNotFoundException: The configuration file 'config.json' was not found and is not optional.
at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load(Boolean reload)
at Microsoft.Extensions.Configuration.ConfigurationRoot..ctor(IList`1 providers)
at Microsoft.Extensions.Configuration.ConfigurationBuilder.Build()
at OdeToFood.Startup..ctor()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.Extensions.Internal.ActivatorUtilities.ConstructorMatcher.CreateInstance(IServiceProvider provider)
at Microsoft.AspNetCore.Hosting.Internal.StartupLoader.LoadMethods(IServiceProvider services, Type startupType, String environmentName)
at Microsoft.AspNetCore.Hosting.WebHostBuilderExtensions.<>c__DisplayClass1_0.b__1(IServiceProvider sp)
at Microsoft.Extensions.DependencyInjection.ServiceProvider.ScopedCallSite.Invoke(ServiceProvider provider)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
at Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureStartup()
at Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureApplicationServices()
at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
显示当前文件的屏幕截图
Screenshot showing the file present
该如何纠正?
谢谢
推荐答案
我认为您忘记了使用Server.MapPath
函数.您可以使用以下代码编辑Constructor
:
I think you forget to use Server.MapPath
function.You can edit your Constructor
with following code :
public Startup()
{
var builder = new ConfigurationBuilder()
.AddJsonFile(HttpContext.Current.Server.MapPath("~/config.json"));
Configuration = builder.Build();
}
希望它对您有帮助:)
这篇关于找不到文件异常Visual Studio 2015的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!