/// <summary>
/// Gets the value.
/// </summary>
/// <typeparamm name="T"></typeparamm>
/// <paramm name="handlerType">Type of the method.</paramm>
/// <returns></returns>
public static T GetAttribute <T>(MethodInfo method) where T : Attribute
{
var attributes = ActionBehaviorStorager.GetAttributes(method);
for (var i = 0; i < attributes.Count(); i++)
{
var attribute = attributes.ElementAt(i) as T;
if (attribute != null)
{
return(attribute);
}
}
return(default(T));
}
/// <summary>
/// Selects the action.
/// </summary>
/// <param name="controllerContext">The controller context.</param>
/// <returns></returns>
public override HttpActionDescriptor SelectAction(HttpControllerContext controllerContext)
{
ActionResultMetadata?item = null;
if (controllerContext.Request.Properties.ContainsKey("CurrentApiRoute"))
{
item = controllerContext.Request.Properties["CurrentApiRoute"] as ActionResultMetadata?;
}
else
{
item = customHttpControllerSelector.FindControllerAndActionName(controllerContext.Request);
}
if (!item.HasValue || item.Value.ControllerName.IsNullOrEmpty() || item.Value.ActionMethod == null)
{
return(base.SelectAction(controllerContext));
}
var attributes = ActionBehaviorStorager.GetAttributes(item.Value.ActionMethod);
/*当为空的时候，则直接返回*/
if (attributes == null || !attributes.Any())
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
/*匿名方法直接返回*/
if (attributes.GetAttribute <AllowAnonymousAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
/*遍历是否带上各种attribute*/
switch ((controllerContext.Request.Method.Method ?? "get").ToLower())
{
case "get":
{
if (attributes.GetAttribute <HttpGetAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
}
break;
case "head":
{
if (attributes.GetAttribute <HttpHeadAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
}
break;
case "options":
{
if (attributes.GetAttribute <HttpOptionsAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
}
break;
case "post":
{
if (attributes.GetAttribute <HttpPostAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
}
break;
case "put":
{
if (attributes.GetAttribute <HttpPutAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
}
break;
case "trace":
{
if (attributes.GetAttribute <HttpPatchAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
}
break;
case "delete":
{
if (attributes.GetAttribute <HttpDeleteAttribute>() != null)
{
return(new ReflectedHttpActionDescriptor(controllerContext.ControllerDescriptor, item.Value.ActionMethod));
}
}
break;
}
throw new HttpResponseException(controllerContext.Request.CreateErrorResponse(HttpStatusCode.MethodNotAllowed, string.Format("The requested resource does not support http method {0}", controllerContext.Request.Method.Method)));
}
