小编Pro*_*log的帖子

Azure错误是:

.Net Core:应用程序启动异常:System.IO.FileNotFoundException:找不到配置文件'appsettings.json',它不是可选的.

所以这有点模糊.我似乎无法解决这个问题.我正在尝试将一个.Net Core Web API项目部署到Azure,我收到此错误:

:(糟糕.500内部服务器错误启动应用程序时出错.

我已经部署了普通的.Net WebAPI,他们已经工作了.我已经按照在线教程进行了操作.但不知何故,我的项目已经破产.在Web.config上启用stdoutLogEnabled并查看Azure Streaming Logs给出了以下信息:

2016-08-26T02:55:12  Welcome, you are now connected to log-streaming service.
Application startup exception: System.IO.FileNotFoundException: The configuration file 'appsettings.json' was not found and is not optional.
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load(Boolean reload)
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load()
   at Microsoft.Extensions.Configuration.ConfigurationRoot..ctor(IList`1 providers)
   at Microsoft.Extensions.Configuration.ConfigurationBuilder.Build()
   at Quanta.API.Startup..ctor(IHostingEnvironment env) in D:\Source\Workspaces\Quanta\src\Quanta.API\Startup.cs:line 50
--- 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.Extensions.Internal.ActivatorUtilities.CreateInstance(IServiceProvider provider, Type instanceType, Object[] parameters)
   at Microsoft.Extensions.Internal.ActivatorUtilities.GetServiceOrCreateInstance(IServiceProvider provider, …

在为ASP.NET Core应用程序编写单元测试期间，我意识到ViewData可以访问，ViewResult但是ViewBag不能访问。

我的HomeController：

public class HomeController : Controller
{
    private readonly IHeroRepository _heroItems;
    private readonly IQuestRepository _questItems;

    public HomeController(
        IHeroRepository heroItems,
        IQuestRepository questItems)
    {
        _heroItems = heroItems;
        _questItems = questItems;
    }

    [HttpGet]
    public async Task<IActionResult> Index()
    {
        var recentHeroesVM = await _heroItems.GetRecentHeroesAsync(2);
        ViewBag.QuestSelectList = await _questItems.GetSelectListAsync();
        return View(recentHeroesVM);
    }
}

我的测试课：

public class HomeController_Index
{
    [Fact]
    public async Task Index_ReturnsAViewResult_WithAListOfRecentHeros()
    {
        // Arrange
        var mockHeroRepo = new Mock<IHeroRepository>();
        var mockQuestRepo = …

是否可以将有关本地计算表达式的 Entity Framework Core 警告转换为错误？我想强迫自己总是编写正确评估的查询。

Microsoft.EntityFrameworkCore.Query：警告：LINQ 表达式“(...)”无法翻译，将在本地进行评估。

我有一个简单的服务界面：

public interface ICustomService
{
    bool ConstructedWithNoParameters { get; }
}

同样简单的实现：

public class CustomService : ICustomService
{
    private readonly IEnumerable<int> _items;

    public CustomService()
    {
        _items = Enumerable.Empty<int>();

        ConstructedWithNoParameters = true;
    }

    public CustomService(IEnumerable<int> items)
    {
        _items = items ?? throw new ArgumentNullException(nameof(items));
    }

    public bool ConstructedWithNoParameters { get; }
}

请注意，根据调用哪个构造函数，将ConstructedWithNoParameters设置为true。

这是一个简单的测试场景来进行测试：

[Fact]
public void Test1()
{
    // Assert
    var serviceProvider = new ServiceCollection()
        .AddTransient<ICustomService, CustomService>()
        .BuildServiceProvider();

    // Act
    var customService = serviceProvider.GetRequiredService<ICustomService<int>>();

    // Arrange …