标签: asp.net-core-mvc

将表单POST HTTP request(Content-Type: application/x-www-form-urlencoded)发送到以下控制器会导致HTTP 415 Unsupported Media Type响应.

public class MyController : Controller
{
    [HttpPost]
    public async Task<IActionResult> Submit([FromBody] MyModel model)
    {
        //...
    }
}

表单发布HTTP标头:

POST /submit HTTP/1.1
Host: example.com:1337
Connection: keep-alive
Content-Length: 219
Pragma: no-cache
Cache-Control: no-cache
Origin: https://example.com:1337
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Referer: https://example.com:1337/submit
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.8,nl;q=0.6

这曾经用于.NET 4.6上的ASP.NET MVC 5.

在appsettings.json中

{
      "MyArray": [
          "str1",
          "str2",
          "str3"
      ]
}

在Startup.cs中

public void ConfigureServices(IServiceCollection services)
{
     services.AddSingleton<IConfiguration>(Configuration);
}

在HomeController中

public class HomeController : Controller
{
    private readonly IConfiguration _config;
    public HomeController(IConfiguration config)
    {
        this._config = config;
    }

    public IActionResult Index()
    {
        return Json(_config.GetSection("MyArray"));
    }
}

上面有我的代码,我得到null如何获取数组？

不知道我在这里缺少什么,但我无法从我的.net核心应用程序中的appsettings.json获取值.我的appsettings.json为:

{
    "AppSettings": {
        "Version": "One"
    }
}

启动:

public class Startup
{
    private IConfigurationRoot _configuration;
    public Startup(IHostingEnvironment env)
    {
        _configuration = new ConfigurationBuilder()
    }
    public void ConfigureServices(IServiceCollection services)
    {
      //Here I setup to read appsettings        
      services.Configure<AppSettings>(_configuration.GetSection("AppSettings"));
    }
}

模型:

public class AppSettings
{
    public string Version{ get; set; }
}

控制器:

public class HomeController : Controller
{
    private readonly AppSettings _mySettings;

    public HomeController(IOptions<AppSettings> settings)
    {
        //This is always null
        _mySettings = settings.Value;
    }
}

_mySettings永远是空的.这里有什么我想念的吗？

阅读这两个问题/答案,我能够在IIS 8.5服务器上运行Asp.net 5应用程序.

Asp.net vNext早期测试版在Windows服务器上发布到IIS

如何配置MVC6应用程序在IIS上工作？

问题是,即使在IIS上运行,Web应用程序仍然使用env.EnvironmentName值Development.

另外,我想在同一台服务器上运行同一个Web(Staging,Production)的两个版本,所以我需要一个方法来分别为每个Web设置变量.

这该怎么做？

每当我向我的asp.net核心项目添加javascript或css文件并dotnet run在我的bash终端中执行时,我都会收到以下错误:

/usr/share/dotnet/sdk/1.0.1/Sdks/Microsoft.NET.Sdk/build/Microsoft

.NET.Sdk.DefaultItems.targets(188,5):错误:包含重复的"内容"项..NET SDK默认包含项目目录中的"内容"项.您可以从项目文件中删除这些项目,或者如果要在项目文件中明确包含它们,请将"EnableDefaultContentItems"属性设置为"false".有关更多信息,请参阅https://aka.ms/sdkimplicititems.重复的项目是:'wwwroot/css/BasicQuotation.css'; 'wwwroot/js/BasicQuotation.js'[/mnt/c/Dev/myproject/MyProject/MyProject.csproj]

构建失败.请修复构建错误并再次运行.

我可以通过删除ItemGroup我的csproj文件来解决这个问题,但我认为这不是很有效率.

这在默认的Visual Studio 2017 ASP.NET核心Web应用程序(.NET Core)模板中发生.我通过右键单击wwwroot> js文件夹将文件添加到我的项目中,然后选择Add > New Item > JavaScript File

这是我的.csproj文件:

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
  </PropertyGroup>

  <PropertyGroup>
    <PackageTargetFallback>$(PackageTargetFallback);portable-net45+win8+wp8+wpa81;</PackageTargetFallback>
  </PropertyGroup>

  <PropertyGroup>
    <UserSecretsId>aspnet-MyProject-7e1906d8-5dbd-469a-b237-d7a563081253</UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
    <Compile Remove="wwwroot\lib\jquery-validation\**" />
    <Content Remove="wwwroot\lib\jquery-validation\**" />
    <EmbeddedResource Remove="wwwroot\lib\jquery-validation\**" />
    <None Remove="wwwroot\lib\jquery-validation\**" />
  </ItemGroup>

  <ItemGroup>
    <Content Include="wwwroot\css\BasicQuotation.css" />
    <Content Include="wwwroot\js\BasicQuotation.js" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.1" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.1" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" …

我希望下面的示例控制器返回没有内容的状态代码418.设置状态代码很容易,但似乎需要做一些事情来发出请求结束的信号.在ASP.NET Core之前的MVC或WebForms中可能是一个调用,Response.End()但它如何在ASP.NET Core中Response.End不存在？

public class ExampleController : Controller
{
    [HttpGet][Route("/example/main")]
    public IActionResult Main()
    {
        this.HttpContext.Response.StatusCode = 418; // I'm a teapot
        // How to end the request?
        // I don't actually want to return a view but perhaps the next
        // line is required anyway?
        return View();   
    }
}

我已经完成了ASP.NET核心的配置文档.文档说您可以从应用程序的任何位置访问配置.

下面是模板创建的Startup.cs

public class Startup
{
    public Startup(IHostingEnvironment env)
    {
        var builder = new ConfigurationBuilder()
            .SetBasePath(env.ContentRootPath)
            .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
            .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true);

        if (env.IsEnvironment("Development"))
        {
            // This will push telemetry data through Application Insights pipeline faster, allowing you to view results immediately.
            builder.AddApplicationInsightsSettings(developerMode: true);
        }

        builder.AddEnvironmentVariables();
        Configuration = builder.Build();
    }

    public IConfigurationRoot Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container
    public void ConfigureServices(IServiceCollection …

HttpContext.Current.Server.UrlEncode

它仅适用于.NET Framework.如何在ASP.NET Core项目中编码或解码uri参数？

在以前的asp.net版本中,我们可以使用

@Request.Url.AbsoluteUri

但它似乎已经改变了.我们怎样才能在asp.net core 1.0中做到这一点？

升级到ASP.NET Core 2.0后,我似乎无法再创建迁移.

我越来越

"在类'Program'上调用方法'BuildWebHost'时发生错误.继续没有应用服务提供者.错误:发生了一个或多个错误.(无法打开登录请求的数据库"...".登录失败.登录用户'...'失败

和

"无法创建'MyContext'类型的对象.将'IDesignTimeDbContextFactory'的实现添加到项目中,或者参见 https://go.microsoft.com/fwlink/?linkid=851728以获取在设计时支持的其他模式."

我之前运行的命令是$ dotnet ef migrations add InitialCreate --startup-project "..\Web"(来自带有DBContext的项目/文件夹).

连接字符串: "Server=(localdb)\\mssqllocaldb;Database=database;Trusted_Connection=True;MultipleActiveResultSets=true"

这是我的Program.cs

 public class Program
{
    public static void Main(string[] args)
    {
        BuildWebHost(args).Run();
    }

    public static IWebHost BuildWebHost(string[] args) =>
       WebHost.CreateDefaultBuilder(args)
           .UseStartup<Startup>()
           .Build();
}