import java.io.IOException;
import javax.swing.text.BadLocationException;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSFloat;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSString;
import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.interactive.action.PDAnnotationAdditionalActions;
import org.apache.pdfbox.pdmodel.interactive.action.type.PDActionJavaScript;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDTextbox;
import org.junit.Test;
public class TestPDTextbox {
@Test
public void Sample1 () throws IOException, COSVisitorException, BadLocationException {
PDDocument doc = new PDDocument();
PDPage page = new PDPage();
doc.addPage(page);
COSDictionary acroFormDict = new COSDictionary();
// acroFormDict.setBoolean(COSName.getPDFName("NeedAppearances"), true);
acroFormDict.setItem(COSName.getPDFName("Fields"), new COSArray());
PDAcroForm acroForm = new PDAcroForm(doc, acroFormDict);
doc.getDocumentCatalog().setAcroForm(acroForm);
COSDictionary cosDict1 = new COSDictionary();
COSArray rect1 = new COSArray();
rect1.add(new COSFloat(100));
rect1.add(new COSFloat(700));
rect1.add(new COSFloat(200));
rect1.add(new COSFloat(750));
cosDict1.setItem(COSName.RECT, rect1);
cosDict1.setItem(COSName.FT, COSName.getPDFName("Tx")); // Field Type
cosDict1.setItem(COSName.TYPE, COSName.ANNOT);
cosDict1.setItem(COSName.SUBTYPE, COSName.getPDFName("Widget"));
cosDict1.setItem(COSName.T, new COSString("tx1"));
cosDict1.setItem(COSName.DA, new COSString("/Helv 7 Tf 0 g"));
cosDict1.setItem(COSName.V, new COSString("Test Value1"));
PDTextbox textbox = new PDTextbox(doc.getDocumentCatalog().getAcroForm(), cosDict1);
// textbox.setValue("Test Value");
page.getAnnotations().add(textbox.getWidget());
acroForm.getFields().add(textbox);
doc.save("C:\\PDF\\SampleTextbox.pdf");
doc.close();
}
}
问题#1 我创建了一个文本字段,如上面的代码所示,并尝试使用textbox.setValue设置值("测试值");方法,但它给出错误,如下所示:
java.io.IOException: Error: Don't know how to calculate the position for non-simple fonts
at org.apache.pdfbox.pdmodel.interactive.form.PDAppearance.getTextPosition(PDAppearance.java:1037)
at org.apache.pdfbox.pdmodel.interactive.form.PDAppearance.insertGeneratedAppearance(PDAppearance.java:558)
at org.apache.pdfbox.pdmodel.interactive.form.PDAppearance.setAppearanceValue(PDAppearance.java:338)
at org.apache.pdfbox.pdmodel.interactive.form.PDVariableText.setValue(PDVariableText.java:131)
at sample.pdfbox.example.TestPDTextbox.Sample1(TestPDTextbox.java:54)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
问题#2
为了解决问题#1,如果我使用cosDictionary属性设置textBox的值 即cosDict1.setItem(COSName.V,new COSString(" Test Value1"));
然后在Adobe Reader中,未正确填充textBox的值。 我必须单击文本框,然后只显示值,一旦我从字段中移出,值再次变为不可见。
问题#3
为了解决问题#2,我需要将needAppearances标志设置为true,如下所示,然后在PDF中正确显示该字段值。但在此解决方案之后,一旦用户更改字段值,我就无法提取/解析PDF字段,我们再次解析此PDF。
注意: - 此问题存在于Adobe Reader中,此处打开PDF时,它会提供一些消息,例如修复表单字段。一旦我保存PDF并尝试解析acroform字段,就会发现所有字段都被重置或为空。无法提取字段名称或字段值。
所以使用acroFormDict.setBoolean(COSName.getPDFName(" NeedAppearances"),true);在代码中看起来有风险,它会在PDF解析中产生其他问题,因此无法使用它。
COSDictionary acroFormDict = new COSDictionary();
acroFormDict.setBoolean(COSName.getPDFName("NeedAppearances"), true);
acroFormDict.setItem(COSName.getPDFName("Fields"), new COSArray());
PDAcroForm acroForm = new PDAcroForm(doc, acroFormDict);
doc.getDocumentCatalog().setAcroForm(acroForm);
我认为,我需要为文本字段设置PDAppearanceDictionary,但我不知道这样做以及是否需要为每个字段或acroform级别设置。
请帮我解决这个问题,我应该如何解决。 我正在使用PDFBOX版本1.8.10。
答案 0 :(得分:2)
在上面的问题中,我通过向acroform添加页面资源并使用正确的默认外观字符串来修复问题#1。现在我不需要将needsAppearance标志设置为true。
PDFont font = PDType1Font.HELVETICA;
PDResources res = new PDResources();
String fontName = res.addFont(font);
String defaultAppearance = "/"+fontName+" 7 Tf 0 g";
COSDictionary acroFormDict = new COSDictionary();
acroFormDict.setBoolean(COSName.getPDFName("NeedAppearances"), false);
acroFormDict.setItem(COSName.getPDFName("Fields"), new COSArray());
acroFormDict.setItem(COSName.DA, new COSString(defaultAppearance));
PDAcroForm acroForm = new PDAcroForm(doc, acroFormDict);
acroForm.setDefaultResources(res);
检查下面的整个更正代码:
import java.io.IOException;
import javax.swing.text.BadLocationException;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSFloat;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSString;
import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDTextbox;
import org.junit.Test;
public class TestPDTextbox {
@Test
public void Sample1 () throws IOException, COSVisitorException, BadLocationException {
PDDocument doc = new PDDocument();
PDPage page = new PDPage();
doc.addPage(page);
PDFont font = PDType1Font.HELVETICA;
PDResources res = new PDResources();
String fontName = res.addFont(font);
String defaultAppearance = "/"+fontName+" 7 Tf 0 g";
COSDictionary acroFormDict = new COSDictionary();
acroFormDict.setBoolean(COSName.getPDFName("NeedAppearances"), false);
acroFormDict.setItem(COSName.getPDFName("Fields"), new COSArray());
acroFormDict.setItem(COSName.DA, new COSString(defaultAppearance));
PDAcroForm acroForm = new PDAcroForm(doc, acroFormDict);
acroForm.setDefaultResources(res);
doc.getDocumentCatalog().setAcroForm(acroForm);
COSDictionary cosDict1 = new COSDictionary();
COSArray rect1 = new COSArray();
rect1.add(new COSFloat(100));
rect1.add(new COSFloat(700));
rect1.add(new COSFloat(200));
rect1.add(new COSFloat(750));
cosDict1.setItem(COSName.RECT, rect1);
cosDict1.setItem(COSName.FT, COSName.getPDFName("Tx")); // Field Type
cosDict1.setItem(COSName.TYPE, COSName.ANNOT);
cosDict1.setItem(COSName.SUBTYPE, COSName.getPDFName("Widget"));
cosDict1.setItem(COSName.T, new COSString("tx1"));
cosDict1.setItem(COSName.DA, new COSString(defaultAppearance));
// cosDict1.setItem(COSName.V, new COSString("Test Value1"));
PDTextbox textbox = new PDTextbox(doc.getDocumentCatalog().getAcroForm(), cosDict1);
textbox.setValue("Test Value");
page.getAnnotations().add(textbox.getWidget());
acroForm.getFields().add(textbox);
doc.save("C:\\PDF\\SampleTextbox.pdf");
doc.close();
}
}