Question

我突然想到了一个我不明白的问题。我尝试创建一个API控制器来做一些事情，但没有任何效果，所以我一步一步地回到了我的控制器与以下教程中的相同：

public class CityController : Controller
{
    public CityController()
    {
    }


    [HttpGet("city")]
    public JsonResult Get()
    {
        return new JsonResult(new List<object>()
        {
            new { id = 1, Name ="asd"},
            new { id = 2, Name ="dsa"}
        });
    }

在我的创业公司：

   public void ConfigureServices(IServiceCollection services)
   {
        services.AddMvc();
        ...
   }


   public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
    {
        ...
        app.UseMvc(config =>
        {
            config.MapRoute(
                name: "Default",
                template: "{controller}/{action}/{id?}",
                defaults: new { controller = "City", action = "Index" }
                );
        }
         );
    }

它仍然没有通过邮递员向我发回任何东西......我无法理解为什么？！

我做错了什么？

Answer 1

据我了解，在邮递员中，您需要在标题中设置相应的内容类型，例如：

Content-Type:application/json

该URL将类似于： -

http://xxx:999/City

<强>更新这对我有用。

URL

http://localhost:57909/api/values

控制器

[Route("api/[controller]")]
public class ValuesController : Controller
{
     [HttpGet]
    public JsonResult Get()
    {
        return new JsonResult(new List<object>()
        {
            new { id = 1, Name ="asd"},
            new { id = 2, Name ="dsa"}
        });
    }
}

Answer 2

    [HttpPost] //whichever you prefer, I am fond of HttpPost for a couple of reasons so I'd recommend using that.
    public IHttpActionResult City() //add string city or any input class variable if you're taking any inputs
    {
        return Ok(new List<object>()
        {
            new { id = 1, Name ="asd"},
            new { id = 2, Name ="dsa"}
        }); //This will return a JSON serialized result
    }

WebApiConfig.cs可能如下所示：

    public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            var settings = config.Formatters.JsonFormatter.SerializerSettings;
            settings.ContractResolver = new CamelCasePropertyNamesContractResolver();
            settings.Formatting = Newtonsoft.Json.Formatting.Indented;
            config.MapHttpAttributeRoutes();
            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{action}",
                defaults: new { id = RouteParameter.Optional }
            );
         }
     }

如果您选择HttpPost，请务必相应地配置邮差。

大多数基本控制器都不起作用

2 个答案: