展平后无法显示PDFBox字段值

Question

我有一个由LiberOffice Draw 4.1.0.4创建的PDF表格。

表单包含文本字段、复选框和单选按钮

在我为字段设置值并使用PDFBox（2.0.21）展平表单后，无法显示字段值

我认为这可能是该字段注释的外观问题，但我不知道如何使其正确

测试PDF

import org.apache.commons.lang3.StringUtils;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDField;
import org.apache.pdfbox.pdmodel.interactive.form.PDTextField;

import java.io.File;

public class PdfGenerationTest {
    public static void main( String[] args ) throws Exception{
        testFillValue();
    }
    
    public static void testFillValue() throws Exception{
        PDDocument pdDocument = PDDocument.load(new File("C:\\temp\\test.pdf"));
        
        PDAcroForm acroForm = pdDocument.getDocumentCatalog().getAcroForm();
        
        String defaultAppearance = "/Helv 12 Tf 0 0 1 rg";
        
        for(PDField field : acroForm.getFields()) {
            if (field instanceof PDTextField) {
                PDTextField textField = (PDTextField) field;
                textField.setActions(null);             
                textField.setDefaultAppearance(defaultAppearance);
            }
        }
        
        setFormValue(acroForm, "TextBox", "testvalue");
        setFormValue(acroForm, "radioBtn", "Yes");
        setFormValue(acroForm, "chkBox", "Yes");
        acroForm.refreshAppearances();
        acroForm.flatten();
        
        pdDocument.save("C:\\temp\\test_filled.pdf");
        pdDocument.close();
    }
    
    private static void setFormValue(PDAcroForm acroForm, String key, String value) throws Exception {
        PDField f = acroForm.getField(key);        
        if (f != null) {
            if (value != null && StringUtils.isNotEmpty(value.trim())) {
                f.setValue(value);
            }
        }
    }
}

Answer 1

PDAcroForm。在使用pdfbox 2.0.24后，flaten为我工作

<dependencies>
<dependency>
<groupId>org.apache.pdfbox</groupId>
   <artifactId>pdfbox</artifactId>
   <version>2.0.24</version>
</dependency>
<dependency>
        <groupId>org.apache.pdfbox</groupId>
        <artifactId>fontbox</artifactId>
        <version>2.0.24</version>
</dependency>
<dependency>
        <groupId>org.apache.pdfbox</groupId>
        <artifactId>pdfbox-examples</artifactId>
        <version>2.0.24</version>
</dependency>
</dependencies>