我正在使用 PDFBox 2.0.11 打开 PDF 表单并提取值。这按预期工作。当我尝试设置一个值时,它似乎起作用了。当我打开 PDF 时,该值未显示。如果我在该字段中单击,该值将显示为已设置,但当我单击该字段外时又会再次消失。
这似乎是一个常见问题,但我看到的所有修复似乎都不起作用。
if(file.exists())
{
PDDocument doc = PDDocument.load(file);
doc.setAllSecurityToBeRemoved(true);
PDDocumentCatalog catalog = doc.getDocumentCatalog();
PDAcroForm form = catalog.getAcroForm();
// Add Font
PDResources resources = new PDResources();
resources.put(COSName.getPDFName("Helv"), PDType1Font.HELVETICA);
form.setDefaultResources(resources);
// End Add Font
form.setNeedAppearances(false);
List<PDField> fields = form.getFields();
for (Object field : fields)
{
if (field instanceof PDTextField) {
PDTextField pdTextbox = (PDTextField) field;
System.out.println("PDTextBox " + pdTextbox.getFullyQualifiedName() + " " + pdTextbox.getValue());
if(pdTextbox.getFullyQualifiedName().equalsIgnoreCase("a3_5"))
{
try {
pdTextbox.getWidgets().get(0).setHidden(false);
pdTextbox.setValue("5500");
}
catch(Exception e){
e.printStackTrace();
}
}
}
else
{
System.out.print(field);
System.out.print(" = ");
System.out.print(field.getClass());
System.out.println();
}
}
doc.save("..._MINE_UPDATE.pdf");
doc.close();
}
堆栈跟踪
java.io.IOException: Could not find font: /Helvetica
at org.apache.pdfbox.pdmodel.interactive.form.PDDefaultAppearanceString.processSetFont(PDDefaultAppearanceString.java:179)
at org.apache.pdfbox.pdmodel.interactive.form.PDDefaultAppearanceString.processOperator(PDDefaultAppearanceString.java:132)
at org.apache.pdfbox.pdmodel.interactive.form.PDDefaultAppearanceString.processAppearanceStringOperators(PDDefaultAppearanceString.java:108)
at org.apache.pdfbox.pdmodel.interactive.form.PDDefaultAppearanceString.<init>(PDDefaultAppearanceString.java:86)
at org.apache.pdfbox.pdmodel.interactive.form.PDVariableText.getDefaultAppearanceString(PDVariableText.java:93)
at org.apache.pdfbox.pdmodel.interactive.form.AppearanceGeneratorHelper.<init>(AppearanceGeneratorHelper.java:100)
at org.apache.pdfbox.pdmodel.interactive.form.PDTextField.constructAppearances(PDTextField.java:262)
at org.apache.pdfbox.pdmodel.interactive.form.PDTerminalField.applyChange(PDTerminalField.java:228)
at org.apache.pdfbox.pdmodel.interactive.form.PDTextField.setValue(PDTextField.java:218)
at com.controller.TestPDFBox.loadData(TestPDFBox.java:87)
跳过循环
for (COSName fontResourceName : widgetResources.getFontNames())
{
try
{
if (acroFormResources.getFont(fontResourceName) == null)
{
LOG.debug("Adding font resource " + fontResourceName + " from widget to AcroForm");
acroFormResources.put(fontResourceName, widgetResources.getFont(fontResourceName));
}
}
catch (IOException e)
{
LOG.warn("Unable to match field level font with AcroForm font");
}
}
最佳答案
感谢 Tilman Hausherr 帮助我找到了最终源于 MacOSX 预览应用程序怪癖的答案。
由于某些原因,预览删除了一些功能,这些功能也会导致您无法在 PDF 中正确设置值。
上面的代码工作正常,尽管我确实对下面的 Add Font
部分进行了更改。
// Add Font
PDResources resources = form.getDefaultResources();
if(resources == null)
{
resources = new PDResources();
}
resources.put(COSName.getPDFName("Helvetica"), PDType1Font.HELVETICA);
if(form.getDefaultResources() == null)
{
form.setDefaultResources(resources);
}
// End Add Font
关于java - 为什么不显示使用 PDFBox(2.0.11) 设置的表单字段?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51861187/