我正在使用asp.net web api 2,並且請求無法找到並運行IHttpActionResult方法。我相信他們是我的路由問題。我得到的錯誤(http 500)響應是:「嘗試創建類型控制器時發生錯誤確保控制器具有無參數公共構造函數。」如何解決有關路由的http錯誤500?
我發送請求爲:動詞:GET本地主機:XXXX/API/simpleproduct/getproduct ID = 3
[RoutePrefix("api/simpleproduct")]
public class SimpleProductController : ApiController
{
List<Product> products = new List<Product>() { new Product { Id = 1, Name = "Demo1", Price = 1 }, new Product { Id = 2, Name = "Demo2", Price = 2 }, new Product { Id = 3, Name = "Demo3", Price = 3 } };
public SimpleProductController(List<Product> products)
{
this.products = products;
}
public IEnumerable<Product> GetAllProducts()
{
return products;
}
[Route("getproduct")]
[HttpGet]
public IHttpActionResult GetProduct(int id)
{
var product = products.FirstOrDefault((p) => p.Id == id);
if (product == null)
{
return NotFound();
}
return Ok(product);
}
public IHttpActionResult AddProduct(int Id, string Name, decimal Price)
{
if (Id == 0 || Name == null || Price == 0)
{
return Conflict();
}
products.Add(new Product { Id = Id, Name = Name, Price = Price });
return Ok(products);
}
public IHttpActionResult DeleteProduct(int Id)
{
if (Id < 0)
{
return Conflict();
}
var products2 = products.ToList();
foreach (var product2 in products2)
{
if (product2.Id == Id)
{
products.Remove(product2);
}
}
return Ok(products);
}
}
您是否嘗試添加無參數構造函數? – PmanAce
另外我不確定爲什麼你會通過控制器傳遞產品,你應該只傳遞依賴關係。 – PmanAce
我試過了,但沒有奏效。你是否提到addproduct? – user3126215