c# - 如何在 Controller 级别使用 Route

Question

我在这里尝试使用 [Route] 属性调用 WebApi Controller

为什么 http://localhost:57997/Hello/Jan/1 不是配置的路由while http://localhost:57997/Hello/Jan 获取数据

using a = System.Web.Http;

[a.Route("Hello/Jan")]
public IEnumerable<Department> GetDepartmets()
{
    var x = pro.GetDept();
    return x.ToList();
}

[a.Route("Hello/Jan/{id?}")]
public HttpResponseMessage GetDepartmets(int id)
{
     if (id != null)
        {
            var x = pro.GetDeptById(id);
            return Request.CreateResponse(HttpStatusCode.OK, x);
        }
        else
            return Request.CreateResponse(HttpStatusCode.NotFound);

}

Answer 1

这是一个最小的完整可验证示例，它基于您关于 Controller 使用属性路由的外观的原始帖子。

using a = System.Web.Http;

[a.RoutePrefix("Hello/Jan")] //RoutePrefix used to group common route on controller
public MyController : ApiController {

    //...other code removed for brevity. ie: pro    

    //GET Hello/Jan
    [a.HttpGet]
    [a.Route("")]
    public IHttpActionResult GetDepartmets() {
        var departments = pro.GetDept().ToList();
        return Ok(departments);
    }

    //GET Hello/Jan/1
    [a.HttpGet]
    [a.Route("{id:int}")] //Already have a default route. No need to make this optional
    public IHttpActionResult GetDepartmet(int id) {
         var department = pro.GetDeptById(id);
         if (department != null) {
             return Ok(department);
         }

         return NotFound();    
    }
}

注意:确保在WebApiConfig

中启用属性路由

//enable attribute routing
config.MapHttpAttributeRoutes();

//...before other convention-based routes.