java - PDFBox 2 - 如何在展平之前删除表单字段的边框？

Question

我使用 PDF 文档作为模板，其中有一个表单，在将值放入表单后，我想在展平表单之前删除字段边框。边框在编辑时很有用，但在“渲染”表单时它们很糟糕。我无法将边框的颜色更改为背景颜色，因为它不统一。

Answer 1

下面的代码是从AddBorderToField.java修改而来的示例源码下载:

PDAnnotationWidget widget = textBox.getWidgets().get(0); // only the first widget for simplicity
PDAppearanceCharacteristicsDictionary appearanceCharacteristics = widget.getAppearanceCharacteristics();
if (appearanceCharacteristics == null)
{
     // if it doesn't exist, create it
     appearanceCharacteristics = new PDAppearanceCharacteristicsDictionary(new COSDictionary());
}
appearanceCharacteristics.setBorderColour(new PDColor(new float[]{}, PDDeviceRGB.INSTANCE)); // empty array = invisible color
widget.setAppearanceCharacteristics(appearanceCharacteristics);
acroForm.refreshAppearances(); // alternatively, set the value of the field