从零开始学习 asp.net core 3.1 web api 后端api基础框架(四)-创建控制器Controller

深藏阁楼爱情的钟 2022-05-17 08:56 228阅读 0赞

建立一个Controllers目录, 然后建立一个“控制器类” ProductController.cs, 它需要继承Microsoft.AspNetCore.Mvc.Controller

在Controller里面写这个Get方法:

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tpbmd5dW1hbw_size_16_color_FFFFFF_t_70][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tpbmd5dW1hbw_size_16_color_FFFFFF_t_70 1][]

namespace CoreBackend.Api.Controllers
    {
        public class ProductController: Controller
        {
            public JsonResult GetProducts()
            {
                return new JsonResult(new List<Product>
                {
                    new Product
                    {
                        Id = 1,
                        Name = "牛奶",
                        Price = 2.5f
                    },
                    new Product
                    {
                        Id = 2,
                        Name = "面包",
                        Price = 4.5f
                    }
                });
            }
        }
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tpbmd5dW1hbw_size_16_color_FFFFFF_t_70 2][]

然后运行, 并使用postman来进行请求:

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tpbmd5dW1hbw_size_16_color_FFFFFF_t_70 3][]

请求的网址返回404 Not Found, 因为还没有配置路由 Routing, 所以MVC不知道如何处理/映射这些URI。

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