private TextPlainErrorResult ExcuteExceptionHandler(ExceptionHandlerContext context)
{
TextPlainErrorResult result;
if (context.Exception.InnerException != null)
{
result = new TextPlainErrorResult
{
Request = context.ExceptionContext.Request,
Content = "Dfo ex!",
StatusCode = context.Exception.InnerException.Data["StatusCode"] != null ? ((HttpStatusCode)context.Exception.InnerException.Data["StatusCode"]) : HttpStatusCode.InternalServerError,
MessageTitle = "Exception!!!",
MessageId = "DFO001",
FieldName = "DFO002"
};
}
else
{
result = new TextPlainErrorResult
{
Request = context.ExceptionContext.Request,
Content = string.Format("Server Exception: {0}, {1}", context.Exception.Message, context.Exception.StackTrace),
StatusCode = HttpStatusCode.InternalServerError,
MessageTitle = "Dfo ex!",
MessageId = "M003",
FieldName = "DFO003"
};
}
return(result);
}
public override void Handle(ExceptionHandlerContext context)
{
var result = new TextPlainErrorResult
{
Request = context.ExceptionContext.Request,
Content = "请求失败."
};
if (context.Exception is DbUpdateException)
{
string exceptionMessage = context.Exception.GetBaseException().Message;
if (exceptionMessage.StartsWith("Cannot insert duplicate key row in object"))
{
const string firstString = "The duplicate key value is (";
int firstIndex = exceptionMessage.IndexOf(firstString, StringComparison.Ordinal);
int lastIndex = exceptionMessage.IndexOf(")", StringComparison.Ordinal);
if (firstIndex != -1 && lastIndex != -1)
{
int length = lastIndex - firstIndex - firstString.Length;
if (length > 0)
{
string columnName = exceptionMessage.Substring(firstIndex + firstString.Length, length);
result.Content = "“" + columnName + "”已存在";
}
}
}
else if (exceptionMessage.StartsWith("Violation of PRIMARY KEY constraint"))
{
const string firstString = "The duplicate key value is (";
int firstIndex = exceptionMessage.IndexOf(firstString, StringComparison.Ordinal);
int lastIndex = exceptionMessage.IndexOf(")", StringComparison.Ordinal);
if (firstIndex != -1 && lastIndex != -1)
{
int length = lastIndex - firstIndex - firstString.Length;
if (length > 0)
{
string pkName = exceptionMessage.Substring(firstIndex + firstString.Length, length);
result.Content = "“" + pkName + "”已存在";
}
}
}
else if (exceptionMessage.StartsWith("The DELETE statement conflicted with the REFERENCE constraint"))
{
result.Content = "有关联数据已存在，无法删除";
}
else if (exceptionMessage.StartsWith("The INSERT statement conflicted with the FOREIGN KEY constraint"))
{
result.Content = "缺少依赖的数据，无法新增";
}
else if (exceptionMessage.StartsWith("Parameter value ") && exceptionMessage.EndsWith(" is out of range."))
{
const string firstString = "Parameter value '";
int firstIndex = exceptionMessage.IndexOf(firstString, StringComparison.Ordinal);
int lastIndex = exceptionMessage.LastIndexOf("'", StringComparison.Ordinal);
if (firstIndex != -1 && lastIndex != -1)
{
int length = lastIndex - firstIndex - firstString.Length;
if (length > 0)
{
string value = exceptionMessage.Substring(firstIndex + firstString.Length, length);
result.Content = "“" + value + "”超出了范围";
}
}
}
else if (exceptionMessage.StartsWith(
"The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value"))
{
result.Content = "日期格式不正确";
}
}
else if (context.Exception is DbEntityValidationException)
{
var exception = context.Exception.GetBaseException() as DbEntityValidationException;
if (exception != null)
{
IEnumerable <DbEntityValidationResult> errors = exception.EntityValidationErrors;
var msgTemp = new StringBuilder("");
const string lineBreak = "<br />";
foreach (DbEntityValidationResult err in errors)
{
foreach (DbValidationError vErr in err.ValidationErrors)
{
msgTemp.Append(vErr.ErrorMessage).Append(lineBreak);
}
}
if (msgTemp.Length > 0)
{
result.Content = msgTemp.ToString();
}
result.Content = "输入错误，实体验证失败";
}
}
else
{
result.Content = context.Exception.Message;
}
context.Result = result;
}