Pdf签名有效性复选标记在Acrobat Reader上不可见 [英] Pdf Signature Validity Check Mark Not Visible on Acrobat Reader

问题描述

我正在用iText签署一份pdf文件。当我在Acrobat Reader 9上查看文件时，绿色勾号不会像在Acrobat Reader 7中那样出现在签名矩形内。

I am signing a pdf file with iText. When I view the file on Acrobat Reader 9, the green tick does not appear inside the signature rectangle as it used to do in Acrobat Reader 7.

请注意，我可以看到页面顶部的有效性标记，但我特别希望标记出现在签名矩形中。

Note that I can see the validity mark on top of the page, but I specifically want the mark to appear in the signature rectangle.

有人说Acrobat版本9不再支持此功能，但是我在版本9上查看了一些带有绿色复选标记的数字签名文件。

Some say that this feature is no longer supported by Acrobat by version 9, however I have viewed some digitally signed files with the green check mark on version 9.

那么，我需要在itext上使用特定的标志或图层吗？我已经使用了setAcro6Layers，setVisibleSignature，setLayer2Text，setLayer2Font，setImage，setImageScale等。

So, is there a specific flag or layer on itext I need to use? I already use setAcro6Layers, setVisibleSignature, setLayer2Text, setLayer2Font, setImage, setImageScale etc..

非常感谢任何帮助。
谢谢

Any help is much appreciated. thanks

推荐答案

事实证明我只需要将Acro6Layers设置为false而不是使用setImage方法设置任何图像...而不是setImage，我使用setSignatureGraphic方法...

it turns out I only needed to set Acro6Layers to false and not set any image with setImage method... instead of setImage, I used setSignatureGraphic method...

pdfSignatureAppearance.setAcro6Layers(false);
pdfSignatureAppearance.setImage(null);
pdfSignatureAppearance.setSignatureGraphic(Image...);

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