[英]Attribute Based Routing/Versioning in ASP.Net WEB API 2.0
我正在嘗試在 Asp.Net Web API 中使用版本控制。 以下是項目的結構。
為了支持版本控制,我添加了Microsoft.AspNet.WebApi.Versioning NuGet package。 以下是 WebApiConfig 的代碼片段:
public static void Register(HttpConfiguration config)
{
var constraintResolver = new DefaultInlineConstraintResolver()
{
ConstraintMap =
{
["apiVersion"] = typeof(ApiVersionRouteConstraint)
}
};
config.MapHttpAttributeRoutes(constraintResolver);
config.AddApiVersioning();
// Web API configuration and services
// Web API routes
//config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
以下是 controller 的代碼:
[ApiVersion("1.0")]
[RoutePrefix("api/v{version:apiVersion}/employeemanagement")]
public class EmployeeManagementController : ApiController
{
[Route("GetTest")]
[HttpGet]
public string GetTest()
{
return "Hello World";
}
[Route("GetTest2")]
[HttpGet]
public string GetTest2()
{
return "Another Hello World";
}
[Route("saveemployeedata")]
[HttpPost]
public async Task<GenericResponse<int>> SaveEmployeeData(EmployeeData employeeData, ApiVersion apiVersion)
{
//code goes here
}
[Route("updateemployeedata")]
[HttpPost]
public async Task<GenericResponse<int>> UpdateEmployeeData([FromBody]int id, ApiVersion apiVersion)
{
//code goes here
}
}
如果我在 UpdateEmployeeData 中使用 [FromBody],則會出現以下錯誤:
{
"Message": "The request is invalid.",
"MessageDetail": "The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Threading.Tasks.Task`1[AlphaTest.API.Models.ResponseModels.GenericResponse`1[System.Int32]] UpdateEmployeeData(Int32, Microsoft.Web.Http.ApiVersion)' in 'AlphaTest.API.Controllers.V1.EmployeeManagementController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter."
}
以下是 URL 和數據,我傳遞生成上述錯誤: http://localhost:53963/api/v1.0/EmployeeManagement/updateemployeedata
如果我刪除 [FromBody] 它會給我404 Not found error 。
請幫助我了解我在這里做錯了什么,這導致了上述錯誤。
您可以使用object ,其中包含名為Id
的屬性作為操作UpdateEmployeeData
的參數,而不是直接int Id
,例如:
public class Request
{
public int Id { get; set; }
}
行動將是:
[Route("updateemployeedata")]
[HttpPost]
public async Task<GenericResponse<int>> UpdateEmployeeData([FromBody]Request request, ApiVersion apiVersion)
{
//code goes here
}
我希望你覺得這有幫助。
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