Javascript 使用PDFBox 2.x在PDF上放置一个按钮

我希望有人能帮我解决用PdfBox 2.x创建的PDF上的按钮和文本字段的问题

我尝试在我的页面上放置一个按钮，该按钮使用Javascript函数在文本字段中设置日期。那很好

然后，我尝试将Textfield和按钮放在一个有多个页面的文档中，这样Textfield和按钮就会出现在每一页上，但这样，页面上的按钮只会将日期写入按钮所在页面上的Textfield，我单击了

从那以后，我收到了一个问题，第一页上的按钮对第一页上的文本字段做出了反应，但是第一页是唯一一个按钮做出反应的页面

然后我保存了4个文档，每个文档一页，每个文档都很好地工作。 但当最后我将4个文档合并为一个4页的文档时，我遇到了与以前相同的问题

谁能告诉我，这里有什么问题吗

谢谢 托马斯

以下是我的Java代码：

import java.io.File;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

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.io.MemoryUsageSetting;
import org.apache.pdfbox.multipdf.PDFMergerUtility;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
import org.apache.pdfbox.pdmodel.graphics.color.PDColor;
import org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB;
import org.apache.pdfbox.pdmodel.interactive.action.PDActionJavaScript;
import org.apache.pdfbox.pdmodel.interactive.action.PDAnnotationAdditionalActions;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceCharacteristicsDictionary;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceStream;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDPushButton;
import org.apache.pdfbox.pdmodel.interactive.form.PDTextField;

public class ScriptButton {

public static void main(String[] args) throws IOException {

    List<PDDocument> aDocList = new ArrayList<PDDocument>();

    String destall = ".\\DS216J\\home\\01Privat\\Script_Button_all.pdf";
    DecimalFormat DFMM = new DecimalFormat("00");

    for (int i = 0; i < 4; i++) {

        PDDocument doc = new PDDocument();
        PDPage page = new PDPage();
        doc.addPage(page);

        COSDictionary acroFormDict = new COSDictionary();
        acroFormDict
                .setBoolean(COSName.getPDFName("NeedAppearances"), true);
        acroFormDict.setItem(COSName.FIELDS, new COSArray());

        PDAcroForm acroForm = new PDAcroForm(doc, acroFormDict);
        doc.getDocumentCatalog().setAcroForm(acroForm);

        PDAnnotationAdditionalActions buttonAction1 = null;
        PDActionJavaScript javascript = null;
        PDActionJavaScript tfJs = null;

        String iStr = DFMM.format(i);
        String dest = ".\\DS216J\\home\\01Privat\\Script_Button_" + iStr
                + ".pdf";

        PDFont font = PDType1Font.HELVETICA;
        PDResources resources = new PDResources();
        resources.put(COSName.getPDFName("Helvetica"), font);
        acroForm.setDefaultResources(resources);

        PDAppearanceStream pdAppearanceStream = new PDAppearanceStream(doc);
        pdAppearanceStream.setResources(resources);

        PDTextField textField = new PDTextField(acroForm);
        textField.setPartialName("SampleField-" + iStr);

        String defaultAppearance = "/Helv 24 Tf 0 0 0 rg";
        textField.setDefaultAppearance(defaultAppearance);

        textField.setMultiline(true);
        textField.setValue("Click to get Date");

        acroForm.getFields().add(textField);

        PDAnnotationWidget fieldwidget = textField.getWidgets().get(0);
        PDRectangle rect = new PDRectangle(50, 600, 300, 70);
        fieldwidget.setRectangle(rect);
        fieldwidget.setPage(page);

        PDAppearanceCharacteristicsDictionary fieldAppearance = new PDAppearanceCharacteristicsDictionary(
                new COSDictionary());
        fieldAppearance.setBorderColour(new PDColor(
                new float[] { 0, 0, 0 }, PDDeviceRGB.INSTANCE));
        fieldAppearance.setBackground(new PDColor(new float[] { 1, 1, 1 },
                PDDeviceRGB.INSTANCE));
        fieldwidget.setAppearanceCharacteristics(fieldAppearance);

        fieldwidget.setPrinted(true);

        page.getAnnotations().add(fieldwidget);

        COSDictionary cosDict1 = new COSDictionary();
        COSArray buttonRect1 = new COSArray();
        buttonRect1.add(new COSFloat(50));
        buttonRect1.add(new COSFloat(575));
        buttonRect1.add(new COSFloat(150));
        buttonRect1.add(new COSFloat(550));

        cosDict1.setItem(COSName.RECT, buttonRect1);
        cosDict1.setItem(COSName.FT, COSName.getPDFName("Btn")); // Field
                                                                    // Type
        cosDict1.setItem(COSName.TYPE, COSName.ANNOT);
        cosDict1.setItem(COSName.SUBTYPE, COSName.getPDFName("Widget"));
        cosDict1.setItem(COSName.T, new COSString("Datum anzeigen"));
        cosDict1.setItem(COSName.DA,
                new COSString("/F0 6 Tf 0 g 1 1 1 rg "));

        PDPushButton button1 = new PDPushButton(acroForm);
        javascript = new PDActionJavaScript("function date" + iStr
                + "() {var fld" + iStr + " = this.getField('SampleField-"
                + iStr + "'); fld" + iStr
                + ".value = util.printd('dd mmmm yyyy',new Date());}");

        doc.getDocumentCatalog().setOpenAction(javascript);

        tfJs = new PDActionJavaScript("date" + iStr + "();");
        buttonAction1 = new PDAnnotationAdditionalActions();

        buttonAction1.setU(tfJs);
        button1.getWidgets().get(0).setActions(buttonAction1);

        button1.getCOSObject().addAll(cosDict1);
        acroForm.getFields().add(button1);

        PDAnnotationWidget buttonWidget1 = button1.getWidgets().get(0);

        PDAppearanceCharacteristicsDictionary buttonFieldAppearance = new PDAppearanceCharacteristicsDictionary(
                new COSDictionary());
        COSArray borderColorArray = new COSArray();
        borderColorArray.add(new COSFloat((float) (141f / 255f)));
        borderColorArray.add(new COSFloat((float) (179f / 255f)));
        borderColorArray.add(new COSFloat((float) (226f / 255f)));
        PDColor blue = new PDColor(borderColorArray, PDDeviceRGB.INSTANCE);
        buttonFieldAppearance.setBorderColour(blue);
        buttonFieldAppearance.setBackground(blue);
        buttonFieldAppearance.setNormalCaption("Felder löschen");

        buttonWidget1.setAppearanceCharacteristics(buttonFieldAppearance);
        page.getAnnotations().add(buttonWidget1);

        File file = new File(dest);
        file.getParentFile().mkdirs();

        doc.save(dest);
        doc.close();

        aDocList.add(doc);
    }

    PDDocument aDocWithallPages = new PDDocument();
    PDFMergerUtility PDFmerger = new PDFMergerUtility();

    PDFmerger.setDestinationFileName(destall);

    int i = 0;
    for (Iterator<PDDocument> iterator = aDocList.iterator(); iterator
            .hasNext();) {
        iterator.next();

        String iStr = DFMM.format(i);
        File newFile = new File(".\\DS216J\\home\\01Privat\\Script_Button_"
                + iStr + ".pdf");
        PDFmerger.addSource(newFile);

        i = i + 1;
    }

    PDFmerger.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());

    aDocWithallPages.close();

}

导入java.io.File；
导入java.io.IOException；
导入java.text.DecimalFormat；
导入java.util.ArrayList；
导入java.util.Iterator；
导入java.util.List；
导入org.apache.pdfbox.cos.COSArray；
导入org.apache.pdfbox.cos.cosdirectionary；
导入org.apache.pdfbox.cos.COSFloat；
导入org.apache.pdfbox.cos.COSName；
导入org.apache.pdfbox.cos.coString；
导入org.apache.pdfbox.io.memoryUsage设置；
导入org.apache.pdfbox.multipdf.PDFMergerUtility；
导入org.apache.pdfbox.pdmodel.PDDocument；
导入org.apache.pdfbox.pdmodel.PDPage；
导入org.apache.pdfbox.pdmodel.PDResources；
导入org.apache.pdfbox.pdmodel.common.PDRectangle；
导入org.apache.pdfbox.pdmodel.font.PDFont；
导入org.apache.pdfbox.pdmodel.font.PDType1Font；
导入org.apache.pdfbox.pdmodel.graphics.color.PDColor；
导入org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB；
导入org.apache.pdfbox.pdmodel.interactive.action.PDActionJavaScript；
导入org.apache.pdfbox.pdmodel.interactive.action.PDAnnotationAdditionalActions；
导入org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget；
导入org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceCharacteristicsDictionary；
导入org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceStream；
导入org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm；
导入org.apache.pdfbox.pdmodel.interactive.form.pdputton；
导入org.apache.pdfbox.pdmodel.interactive.form.PDTextField；
公共类脚本按钮{
公共静态void main（字符串[]args）引发IOException{
List aDocList=new ArrayList（）；
字符串destall=“..\\DS216J\\home\\01Privat\\Script\u Button\u all.pdf”；
DecimalFormat DFMM=新的DecimalFormat（“00”）；
对于（int i=0；i<4；i++）{
PDDocument doc=新的PDDocument（）；
PDPage page=新PDPage（）；
文件添加页（第页）；
COSDictionary acroFormDict=新的COSDictionary（）；
肢端肥大症
.setBoolean（COSName.getPDFName（“NeedAppearances”），true；
setItem（COSName.FIELDS，新的COSArray（））；
PDAcroForm acroForm=新的PDAcroForm（文档，acroFormDict）；
doc.getDocumentCatalog（）.setAcroForm（acroForm）；
PDAnnotationAdditionalActions按钮Naction1=null；
PDActionJavaScript=null；
PDActionJavaScript-tfJs=null；
字符串iStr=DFMM.format（i）；
String dest=“.\\DS216J\\home\\01Privat\\Script\u按钮”+iStr
+“.pdf”；
PDFont font=PDType1Font.HELVETICA；
PDResources resources=新的PDResources（）；
resources.put（COSName.getPDFName（“Helvetica”），字体）；
acroForm.setDefaultResources（资源）；
PDAppearanceStream PDAppearanceStream=新的PDAppearanceStream（doc）；
pdAppearanceStream.setResources（资源）；
PDTextField textField=新的PDTextField（acroForm）；
setPartialName（“SampleField-”+iStr）；
字符串defaultAppearance=“/Helv 24 Tf 0 rg”；
textField.setDefaultAppearance（defaultAppearance）；
textField.setMultiline（true）；
setValue（“单击以获取日期”）；
acroForm.getFields（）.add（textField）；
PDAnnotationWidget fieldwidget=textField.getWidgets（）.get（0）；
PDRectangle rect=新的PDRectangle（5060030070）；
fieldwidget.setRectangle（rect）；
fieldwidget.setPage（第页）；
PDApparanceCharacteristicsDictionary字段外观=新PDApparanceCharacteristicsDictionary(
新的cosdirectionary（））；
现场外观。颜色（新PDC颜色）(
新的float[]{0,0,0}，PDDeviceRGB.INSTANCE））；
fieldAppearance.setBackground（新的PDColor（新的float[]{1,1,1}，
PDDeviceRGB.INSTANCE））；
fieldwidget.setAppearanceCharacteristics（fieldAppearance）；
fieldwidget.setPrinted（true）；
page.getAnnotations（）.add（fieldwidget）；
COSDictionary cosDict1=新的COSDictionary（）；
COSArray buttonRect1=新建COSArray（）；
按钮rect1.add（新的COSFloat（50））；
按钮rect1.add（新COSFloat（575））；
按钮rect1.add（新的COSFloat（150））；
按钮rect1.add（新的COSFloat（550））；
cosDict1.setItem（COSName.RECT，buttonRect1）；
cosDict1.setItem（COSName.FT，COSName.getPDFName（“Btn”））；//字段
//类型
cosDict1.setItem（COSName.TYPE，COSName.ANNOT）；
cosDict1.setItem（COSName.SUBTYPE，COSName.getPDFName（“小部件”）；
cosDict1.setItem（COSName.T，新的COSString（“数据特征”））；
cosDict1.setItem（COSName.DA，
新的陪串（“/F06TF0G11RG”）；
PDButton button1=新的PDButton（acroForm）；
javascript=新的PDActionJavaScript（“函数日期”+iStr
+“（{var fld”+iStr+”=this.getField（'SampleField-”
+iStr+“”）；fld“+iStr
+.value=util.printd（'dd-mmmm-yyyy'，new-Date（）；}”）；
public static void main(String[] args) throws IOException
{
    String dest = "SO52807807.pdf";

    Map<String, PDActionJavaScript> map = new HashMap<>();
    DecimalFormat DFMM = new DecimalFormat("00");

    try (PDDocument doc = new PDDocument())
    {
        PDDocumentNameDictionary documentNameDictionary = new PDDocumentNameDictionary(doc.getDocumentCatalog());
        PDJavascriptNameTreeNode javascriptNameTreeNode = new PDJavascriptNameTreeNode();
        documentNameDictionary.setJavascript(javascriptNameTreeNode);

        COSDictionary acroFormDict = new COSDictionary();
        acroFormDict
                .setBoolean(COSName.getPDFName("NeedAppearances"), true);
        acroFormDict.setItem(COSName.FIELDS, new COSArray());

        PDAcroForm acroForm = new PDAcroForm(doc, acroFormDict);
        doc.getDocumentCatalog().setAcroForm(acroForm);

        for (int i = 0; i < 4; i++)
        {
            PDPage page = new PDPage();
            doc.addPage(page);

            PDAnnotationAdditionalActions buttonAction1 = null;
            PDActionJavaScript javascript = null;
            PDActionJavaScript tfJs = null;

            String iStr = DFMM.format(i);

            PDFont font = PDType1Font.HELVETICA;
            PDResources resources = new PDResources();
            resources.put(COSName.getPDFName("Helv"), font);
            acroForm.setDefaultResources(resources);

            PDAppearanceStream pdAppearanceStream = new PDAppearanceStream(doc);
            pdAppearanceStream.setResources(resources);

            PDTextField textField = new PDTextField(acroForm);
            textField.setPartialName("SampleField-" + iStr);

            String defaultAppearance = "/Helv 24 Tf 0 0 0 rg";
            textField.setDefaultAppearance(defaultAppearance);

            textField.setMultiline(true);

            acroForm.getFields().add(textField);

            PDAnnotationWidget fieldwidget = textField.getWidgets().get(0);
            PDRectangle rect = new PDRectangle(50, 600, 300, 70);
            fieldwidget.setRectangle(rect);
            fieldwidget.setPage(page);

            textField.setValue("Click to get Date");

            PDAppearanceCharacteristicsDictionary fieldAppearance = new PDAppearanceCharacteristicsDictionary(
                    new COSDictionary());
            fieldAppearance.setBorderColour(new PDColor(
                    new float[]
                    {
                        0, 0, 0
                    }, PDDeviceRGB.INSTANCE));
            fieldAppearance.setBackground(new PDColor(new float[]
            {
                1, 1, 1
            },
                    PDDeviceRGB.INSTANCE));
            fieldwidget.setAppearanceCharacteristics(fieldAppearance);

            fieldwidget.setPrinted(true);

            page.getAnnotations().add(fieldwidget);

            COSDictionary cosDict1 = new COSDictionary();
            COSArray buttonRect1 = new COSArray();
            buttonRect1.add(new COSFloat(50));
            buttonRect1.add(new COSFloat(575));
            buttonRect1.add(new COSFloat(150));
            buttonRect1.add(new COSFloat(550));

            cosDict1.setItem(COSName.RECT, buttonRect1);
            cosDict1.setItem(COSName.FT, COSName.getPDFName("Btn")); // Field
            // Type
            cosDict1.setItem(COSName.TYPE, COSName.ANNOT);
            cosDict1.setItem(COSName.SUBTYPE, COSName.getPDFName("Widget"));
            cosDict1.setItem(COSName.T, new COSString("Datum anzeigen"));
            cosDict1.setItem(COSName.DA,
                    new COSString("/F0 6 Tf 0 g 1 1 1 rg "));

            PDPushButton button1 = new PDPushButton(acroForm);
            javascript = new PDActionJavaScript("function date" + iStr
                    + "() {var fld" + iStr + " = this.getField('SampleField-"
                    + iStr + "'); fld" + iStr
                    + ".value = util.printd('dd mmmm yyyy',new Date());}");

            //doc.getDocumentCatalog().setOpenAction(javascript);
            map.put("date" + iStr, javascript);

            tfJs = new PDActionJavaScript("date" + iStr + "();");
            buttonAction1 = new PDAnnotationAdditionalActions();

            buttonAction1.setU(tfJs);
            button1.getWidgets().get(0).setActions(buttonAction1);

            button1.getCOSObject().addAll(cosDict1);
            acroForm.getFields().add(button1);

            PDAnnotationWidget buttonWidget1 = button1.getWidgets().get(0);

            PDAppearanceCharacteristicsDictionary buttonFieldAppearance = new PDAppearanceCharacteristicsDictionary(
                    new COSDictionary());
            COSArray borderColorArray = new COSArray();
            borderColorArray.add(new COSFloat((float) (141f / 255f)));
            borderColorArray.add(new COSFloat((float) (179f / 255f)));
            borderColorArray.add(new COSFloat((float) (226f / 255f)));
            PDColor blue = new PDColor(borderColorArray, PDDeviceRGB.INSTANCE);
            buttonFieldAppearance.setBorderColour(blue);
            buttonFieldAppearance.setBackground(blue);
            buttonFieldAppearance.setNormalCaption("Felder löschen");

            buttonWidget1.setAppearanceCharacteristics(buttonFieldAppearance);
            page.getAnnotations().add(buttonWidget1);

        }
        javascriptNameTreeNode.setNames(map);
        doc.getDocumentCatalog().setNames(documentNameDictionary);
        File file = new File(dest);
        file.getParentFile().mkdirs();
        doc.save(dest);
    }
}