iTextSharp - acroform字段编码 [英] iTextSharp - acroform field encoding

问题描述

我正在尝试用iTextSharp填写AcroForm的文本字段。 Acroform文本字段由iTextSharp通过这段代码创建：

  TextField Field = new TextField（OutputWriter，FieldPos，MyField ）; 
 OutputWriter.AddAnnotation（Field.GetTextField（））; // OutputWriter正在写入form.pdf 
  

我使用以下代码填写表单：

  PdfReader reader = new PdfReader（form.pdf）; 
 PdfStamper filledOutForm = new PdfStamper（reader，new FileStream（filled_form.pdf，FileMode.Create））; 
 
 AcroFields form = filledOutForm.AcroFields; 
 form.SetField（MyField，some unicode data）; 
  

但是，当我在Acrobat Reader中打开fill_form.pdf时，unicode字符不可见，除非我手动编辑该字段（例如，我用手附加字符到字段）。

我还尝试通过以下方式设置字段的字体：

  BaseFont fieldFontRoman = BaseFont.CreateFont（@C：\Windows\Fonts\times.ttf，
 BaseFont.IDENTITY_H，
 BaseFont.EMBEDDED）; 
 form.SetFieldProperty（MyField，textfont，fieldFontRoman，null）; 
  

然后，当我在Acrobat Reader中打开fill_form.pdf时，除非我手动编辑字段。之后，非Unicode字符消失（它们变为空格）。他们在这个领域，因为如果我通过CTRL + C复制字段的整个内容并将其粘贴到记事本，我可以看到所有的字符。

请指教。我想看到字段中的所有字符，而不需要手动编辑字段，当然手动编辑它后，我不希望任何字符消失。

谢谢

解决方案

在创建PdfStamper后设置SubstitutionFont：

  stamper.AcroFields.AddSubstitutionFont（myFont.BaseFont）; 
  

I'm trying to fill out a AcroForm's textfield with iTextSharp. The Acroform textfield was created also by iTextSharp by this piece of code:

TextField Field = new TextField(OutputWriter, FieldPos, "MyField");
OutputWriter.AddAnnotation(Field.GetTextField()); // OutputWriter is writing to form.pdf

I fill the form using this code:

PdfReader reader = new PdfReader("form.pdf");
PdfStamper filledOutForm = new PdfStamper(reader, new FileStream("filled_form.pdf", FileMode.Create));

AcroFields form = filledOutForm.AcroFields;
form.SetField("MyField", "some unicode data");

However, when I open filled_form.pdf in Acrobat Reader, unicode characters are not visible unless I edit manually the field (e.g. I append a character by hand to the field).

I also tried to set field's font by:

BaseFont fieldFontRoman = BaseFont.CreateFont(@"C:\Windows\Fonts\times.ttf",
                                BaseFont.IDENTITY_H,
                                BaseFont.EMBEDDED);
form.SetFieldProperty("MyField", "textfont", fieldFontRoman, null);

Then, when I open filled_form.pdf in Acrobat Reader, everything looks fine unless I edit manually the field. After that, non unicode characters disappear (they change into blank spaces). They are here in the field because if I copy whole content of the field by CTRL + C and paste it to notepad, I can see all characters.

Please advise. I would like to see all characters in the field without the need of editing the field manually and of course after editing it manually I would like no characters to disappear.

Thank you

解决方案

Set the SubstitutionFont after creating the PdfStamper:

stamper.AcroFields.AddSubstitutionFont(myFont.BaseFont);

这篇关于iTextSharp - acroform字段编码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！