/// <summary>
/// 在执行操作方法之前由 ASP.NET MVC 框架调用。
/// </summary>
/// <param name="filterContext"></param>
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (filterContext == null)
{
return;
}
#region 检测ActionResult返回类型
#region 检测是否已经在Action或Controller上设置 CustomErrorAttribute
Type customErrorAttributeType = typeof(CustomErrorAttribute);
object[] attributes = null;
if (filterContext.ActionDescriptor.IsDefined(customErrorAttributeType, true))
{
attributes = filterContext.ActionDescriptor.GetCustomAttributes(customErrorAttributeType, true);
}
else if (filterContext.ActionDescriptor.ControllerDescriptor.IsDefined(customErrorAttributeType, true))
{
attributes = filterContext.ActionDescriptor.GetCustomAttributes(customErrorAttributeType, true);
}
if (attributes == null)
{
#region 如果没有设置CustomErrorAttribute,则使用最终的相应格式输出数据
var actionDescriptor = filterContext.ActionDescriptor as IMethodInfoActionDescriptor;
var actionReturnType = actionDescriptor.MethodInfo.ReturnType;
if (object.ReferenceEquals(typeof(JsonResult), actionReturnType))
{
this.Format = EnumOutputFormat.JSON;
}
else
{
this.Format = EnumOutputFormat.Redirect;
}
#endregion
}
else
{
this.Format = ((CustomErrorAttribute)attributes.Last()).Format;
}
#endregion
#endregion
base.OnActionExecuting(filterContext);
}
//*** Private methods ***************************************************************************************************/
/// <summary>
/// Return string that contains formatted matrix data.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="matrix"></param>
/// <returns></returns>
private static string DisplayMatrix2D <T>(T[,] matrix, EnumOutputFormat enumOutputType)
{
string stringOut = string.Empty;
for (int i = 0; i <= matrix.GetUpperBound(0); i++)
{
StringBuilder stringBuilder = new StringBuilder();
for (int y = 0; y <= matrix.GetUpperBound(1); y++)
{
switch (enumOutputType)
{
case EnumOutputFormat.Integer:
stringBuilder.Append($"{matrix[i, y]:0} ");
break;
case EnumOutputFormat.Double1:
stringBuilder.Append($"{matrix[i, y],CommonItems.intPadOutput:0.0} ");
break;
case EnumOutputFormat.Double2:
stringBuilder.Append($"{matrix[i, y],CommonItems.intPadOutput:0.00} ");
break;
case EnumOutputFormat.Double3:
stringBuilder.Append($"{matrix[i, y],CommonItems.intPadOutput:0.000} ");
break;
case EnumOutputFormat.Double4:
stringBuilder.Append($"{matrix[i, y],CommonItems.intPadOutput:0.0000} ");
break;
}
}
if (enumOutputType.Equals(EnumOutputFormat.Integer))
{
stringOut += $"\n {stringBuilder}"; // Offest integer output with spaces to align with after decimal in double output.
}
else
{
stringOut += $"\n{stringBuilder}";
}
}
stringOut += "\n";
return(stringOut);
}
/// <summary>
/// 相应格式(跳转或JSON)
/// </summary>
/// <param name="format"></param>
public CustomErrorAttribute(EnumOutputFormat format)
{
this.Format = format;
}
public CustomErrorAttribute()
{
Format = EnumOutputFormat.Redirect;
}
