从ASP.NET核心中的类库加载和注册API控制器

Question

我正在使用ASP.NET Core 1.0.1.我有以下内容

• "Microsoft.AspNetCore.Mvc": "1.0.1"用于开发控制器的类库 :

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"
    }
  }
}

• Asp.net核心应用程序(Web API Template)将托管我的控制器并引用该类库.但是,它永远不会达到控制器的断点.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"api/values"以确保它正常工作;
• 将新项目添加到名为ClassLibrary的解决方案:类库(.NET Core);
• 删除Class1.cs并创建一个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"References" - >"Add Reference ..."或更新project.json,如下所示:

  "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"api/test";

Answer 2

你不需要在主Web应用程序的Startup.cs中做任何特殊的事情,它只需要引用类库.

一个技巧是,为了发现您的控制器,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