Question

我正在尝试使用FDBatchMoveTextReader解析不同的文本文件。我仅使用GuessFormat程序来确定字段数。因此，我将AnalyzeSample设置为10行。我试图在GuessFormat运行后手动将每个字段的数据类型设置为字符串。当我运行执行时，我收到错误说

[FireDAC] [补偿] [DM] -607。映射项[ - ＆gt; B]的错误文本值[17,5]格式。＆＃39; 17,5＆＃39;不是有效的整数值。

以上B是我在SQL Server Express中的列名，也是nvarchar(60)。

如何实际将数据类型设置为字符串？

我的代码如下。

FDBatchMoveTextReader1.FileName := Edit1.Text;
FDBatchMove1.GuessFormat([taDelimSep, taFields]);

case ComboBox1.ItemIndex of
  0: FDBatchMoveTextReader1.Encoding := ecANSI;
  1: FDBatchMoveTextReader1.Encoding := ecDefault;
  2: FDBatchMoveTextReader1.Encoding := ecUTF16;
  3: FDBatchMoveTextReader1.Encoding := ecUTF8;
end;

for i := 0 to FDBatchMoveTextReader1.DataDef.Fields.Count-1 do begin
  // Set all field data type as string
  FDBatchMoveTextReader1.DataDef.Fields[i].DataType := atString;
end;

FDBatchMove1.Execute;

Answer 1

下面解决了问题：

FDBatchMoveTextReader1.FileName := Edit1.Text;
FDBatchMove1.GuessFormat([taDelimSep, taFields]);

case ComboBox1.ItemIndex of
  0: FDBatchMoveTextReader1.Encoding := ecANSI;
  1: FDBatchMoveTextReader1.Encoding := ecDefault;
  2: FDBatchMoveTextReader1.Encoding := ecUTF16;
  3: FDBatchMoveTextReader1.Encoding := ecUTF8;
end;

for i := 0 to FDBatchMoveTextReader1.DataDef.Fields.Count-1 do begin
  // Set all field data type as string
  FDBatchMoveTextReader1.DataDef.Fields[i].DataType := atString;
end;

FDBatchMove1.Analyze := [];

FDBatchMove1.Execute;

感谢你让我处于严谨的方向。

FireDAC FDBatchMoveTextReader在运行时更改字段数据类型

1 个答案: