Question

我正在使用ASP.NET Core 1.0.1。我有以下

使用 "Microsoft.AspNetCore.Mvc": "1.0.1" 开发控制器的类库：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace CoreAPIsLibrary.Controllers
{

    [Route("api/[controller]")]
    public class ValuesContoller : Controller
    { 
        public string Get()
        {
            return "value";
        }

        // GET api/values/5
        [HttpGet("{id}")]
        public string Get(int id)
        {
            return "value";
        }

        // POST api/values
        [HttpPost]
        public void Post([FromBody]string value)
        {
        }

        // PUT api/values/5
        [HttpPut("{id}")]
        public void Put(int id, [FromBody]string value)
        {
        }
    }
}

这是我的类libray的project.json：

{
  "version": "1.0.0-*",

  "dependencies": {
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "NETStandard.Library": "1.6.0"
  },

  "frameworks": {
    "netstandard1.6": {
      "imports": "dnxcore50"
    }
  }
}

将托管我的控制器和参考的Asp.net核心应用程序（Web API模板）那个类库。然而，它永远不会达到突破点控制器。这是我在Web应用程序中的启动类：

  using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using System.Reflection;
using CoreAPIsLibrary.Controllers;

namespace APIsHost
{
    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)
                .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 services)
        {
            services.AddMvc()
              .AddApplicationPart(typeof(ValuesContoller).GetTypeInfo().Assembly).AddControllersAsServices();
        }

        // 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(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            app.UseMvc(routes =>
            {
                routes.MapRoute("default", "{controller}/{action}/{id}");
            });
            //app.UseMvc();
        }
    }
}

我还检查了控制器是否被注入：

那么，缺少什么？

Answer 1

也许你做错了什么。所以，这是使这项工作的步骤。

创建一个新项目：ASP.NET Core Web Application（.NET Core）;
选择Web API模板;
运行项目并访问＆＃34; api / values＆＃34;确保它正常工作;
将新项目添加到名为ClassLibrary的解决方案：类库（.NET Core）;
删除Class1.cs并创建TestController.cs类;

在ClassLibrary项目的project.json中添加MVC依赖项：

"dependencies": {
  "NETStandard.Library": "1.6.0",
  "Microsoft.AspNetCore.Mvc": "1.0.0"
},

将TestController.cs更新为：

[Route("api/[controller]")]
public class TestController : Controller{
  [HttpGet]
  public IEnumerable<string> Get() {
    return new string[] { "test1", "test2" };
  }
}

在WebAPI项目中添加对ClassLibrary的引用：右键单击＆＃34;引用＆＃34; - ＆gt;＆＃34;添加引用...＆＃34;或者像这样更新你的project.json：

"dependencies": {
  "Microsoft.NETCore.App": {
    "version": "1.0.0",
    "type": "platform"
  },
  "Microsoft.AspNetCore.Mvc": "1.0.0",
  "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
  "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
  "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
  "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
  "Microsoft.Extensions.Configuration.Json": "1.0.0",
  "Microsoft.Extensions.Logging": "1.0.0",
  "Microsoft.Extensions.Logging.Console": "1.0.0",
  "Microsoft.Extensions.Logging.Debug": "1.0.0",
  "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
  "ClassLibrary": "1.0.0-*"
},

更新您的Startup.cs ConfigureServices方法：

public void ConfigureServices(IServiceCollection services) {
  services.AddMvc().AddApplicationPart(Assembly.Load(new AssemblyName("ClassLibrary")));
}

再次运行项目并访问＆＃34; api / test＆＃34;;

Answer 2

您不需要在主Web应用程序的Startup.cs中做任何特殊操作，只需要引用类库。

一个技巧是，要发现您的控制器，您的类库必须直接在其project.json文件依赖项部分中引用MVC：

"Microsoft.AspNetCore.Mvc": "1.0.*"

更新：对于MVC应用程序，我在启动时不需要任何特殊功能，但在我的一个api应用程序中，我确实需要它，因为使用属性路由。

services.AddMvc()
            .AddApplicationPart(Assembly.Load(new AssemblyName("CSharp.WebLib")))
            ;

其中CSharp.WebLib是我的类库的名称

Answer 3

https://curia.me/how-to-use-a-controller-from-another-assembly-in-asp-net-core/

因此，这是加载控制器而不是整个程序集的更精确的方法。

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

    services.AddMvc()
        .AddApplicationPart(typeof(Namespace.SubNamespace.ControllerName).Assembly);

    ...
}

Answer 4

@Fabricio Koch

如果我在dotnet 5中发布了启用修整选项，它将如何在以下代码上工作？

public void ConfigureServices(IServiceCollection services) {
  services.AddMvc().AddApplicationPart(Assembly.Load(new AssemblyName("ClassLibrary")));
}

从ASP.NET核心中的类库加载和注册API控制器

4 个答案: