Java PDField.getWidgets方法代码示例

import org.apache.pdfbox.pdmodel.interactive.form.PDField; //导入方法依赖的package包/类
/**
 * <a href="https://stackoverflow.com/questions/22074449/how-to-know-if-a-field-is-on-a-particular-page">
 * how to know if a field is on a particular page?
 * </a>
 * <p>
 * This sample document does not contain the optional page entry in its annotations.
 * Thus, the fast method fails in contrast to the safe one.
 * </p>
 */
@Test
public void testAFieldTwice() throws IOException
{
    System.out.println("aFieldTwice.pdf\n=================");
    try (   InputStream resource = getClass().getResourceAsStream("aFieldTwice.pdf")    )
    {
        PDDocument document = PDDocument.load(resource);
        PDAcroForm acroForm = document.getDocumentCatalog().getAcroForm();
        if (acroForm != null)
        {
            for (PDField field : acroForm.getFieldTree())
            {
                System.out.println(field.getFullyQualifiedName());
                for (PDAnnotationWidget widget : field.getWidgets())
                {
                    System.out.print(widget.getAnnotationName() != null ? widget.getAnnotationName() : "(NN)");
                    System.out.printf(" - fast: %s", determineFast(document, widget));
                    System.out.printf(" - safe: %s\n", determineSafe(document, widget));
                }
            }
        }
    }
    System.out.println();
}
 

import org.apache.pdfbox.pdmodel.interactive.form.PDField; //导入方法依赖的package包/类
/**
 * <a href="https://stackoverflow.com/questions/22074449/how-to-know-if-a-field-is-on-a-particular-page">
 * how to know if a field is on a particular page?
 * </a>
 * <p>
 * This sample document contains the optional page entry in its annotations.
 * Thus, the fast method returns the same result as the safe one.
 * </p>
 */
@Test
public void testTestDuplicateField2() throws IOException
{
    System.out.println("test_duplicate_field2.pdf\n=================");
    try (   InputStream resource = getClass().getResourceAsStream("test_duplicate_field2.pdf")    )
    {
        PDDocument document = PDDocument.load(resource);
        PDAcroForm acroForm = document.getDocumentCatalog().getAcroForm();
        if (acroForm != null)
        {
            for (PDField field : acroForm.getFieldTree())
            {
                System.out.println(field.getFullyQualifiedName());
                for (PDAnnotationWidget widget : field.getWidgets())
                {
                    System.out.print(widget.getAnnotationName() != null ? widget.getAnnotationName() : "(NN)");
                    System.out.printf(" - fast: %s", determineFast(document, widget));
                    System.out.printf(" - safe: %s\n", determineSafe(document, widget));
                }
            }
        }
    }
    System.out.println();
}
 

import org.apache.pdfbox.pdmodel.interactive.form.PDField; //导入方法依赖的package包/类
/**
 * <a href="http://stackoverflow.com/questions/36964496/pdfbox-2-0-overcoming-dictionary-key-encoding">
 * PDFBox 2.0: Overcoming dictionary key encoding
 * </a>
 * <br/>
 * <a href="http://www.stockholm.se/PageFiles/85478/KYF%20211%20Best%C3%A4llning%202014.pdf">
 * KYF 211 Best&auml;llning 2014.pdf
 * </a>
 * 
 * <p>
 * Indeed, the special characters in the names are replaced by the Unicode replacement
 * character. PDFBox, when parsing a PDF name, immediately interprets its bytes as UTF-8
 * encoded which fails in the document at hand.
 * </p>
 */
@Test
public void testReadFormOptions() throws IOException
{
    try (   InputStream originalStream = getClass().getResourceAsStream("KYF 211 Best\u00e4llning 2014.pdf") )
    {
        PDDocument pdfDocument = PDDocument.load(originalStream);
        PDAcroForm acroForm = pdfDocument.getDocumentCatalog().getAcroForm();
        
        PDField field = acroForm.getField("Krematorier");
        List<PDAnnotationWidget> widgets = field.getWidgets();
        System.out.println("Field Name: " + field.getPartialName() + " (" + widgets.size() + ")");
        for (PDAnnotationWidget annot : widgets) {
          PDAppearanceDictionary ap = annot.getAppearance();
          Set<COSName> keys = ((COSDictionary)(ap.getCOSObject().getDictionaryObject("N"))).keySet();
          ArrayList<String> keyList = new ArrayList<>(keys.size());
          for (COSName cosKey : keys) {keyList.add(cosKey.getName());}
          System.out.println(String.join("|", keyList));
        }
    }
}
 

import org.apache.pdfbox.pdmodel.interactive.form.PDField; //导入方法依赖的package包/类
/**
 * <a href="https://stackoverflow.com/questions/44817793/the-method-getkids-is-undefined-for-the-type-pdfield">
 * The method getKids() is undefined for the type PDField
 * </a>
 * <br/>
 * <a href="https://issues.apache.org/jira/secure/attachment/12651245/field%20name%20test.pdf">
 * field name test.pdf
 * </a>
 * <p>
 * The problems referred to don't exist anymore.
 * </p>
 */
@Test
public void testListFieldsInFieldNameTest() throws InvalidPasswordException, IOException
{
    PDDocument doc = PDDocument.load(getClass().getResourceAsStream("field name test.pdf"));
    PDAcroForm form = doc.getDocumentCatalog().getAcroForm();
    List<PDField> fields = form.getFields();
    for (int i=0; i<fields.size(); i++) {
        PDField f = fields.get(i);
        if (f instanceof PDTerminalField)
        {
            System.out.printf("%s, %s widgets\n", f.getFullyQualifiedName(), f.getWidgets().size());
            for (PDAnnotationWidget widget : f.getWidgets())
                System.out.printf("  %s\n", widget.getAnnotationName());
        }
        else if (f instanceof PDNonTerminalField)
        {
            List<PDField> kids = ((PDNonTerminalField)f).getChildren();
            for (int j=0; j<kids.size(); j++) {
                if (kids.get(j) instanceof PDField) {
                    PDField kidField = (PDField) kids.get(j);
                    System.out.println(kidField.getFullyQualifiedName());
                }
            } 
        }
    }
}