Anchor doesn't work after merging two different PDF using iText - jasper-reports

Question

I have created two PDF reports using Jasper and merged those into a single PDF file. The first PDF report contains the Anchor link and the second PDF report contains the Anchor target. After merging the two PDFs, the anchor does not work. How should I fix this?
part1.jrxml code
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 5.6.1.final using JasperReports Library version 5.6.1 -->
<!-- 2016-01-03T23:14:55 -->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="part1" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="8d0dcb70-0391-45e2-9263-4ac8cfa5f0de">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<queryString>
<![CDATA[]]>
</queryString>
<background>
<band splitType="Stretch"/>
</background>
<summary>
<band height="405" splitType="Stretch">
<textField>
<reportElement x="320" y="370" width="100" height="30" uuid="0f29cf02-60d5-43d7-b360-3254134a6f77"/>
<textFieldExpression><![CDATA["Anchor Name"]]></textFieldExpression>
<anchorNameExpression><![CDATA["expert"]]></anchorNameExpression>
</textField>
</band>
</summary>
</jasperReport>
part2.jrxml code
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 5.6.1.final using JasperReports Library version 5.6.1 -->
<!-- 2016-01-03T23:24:42 -->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="part2" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="3f401f6e-4962-4a54-9674-4b0c613f9e73">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<queryString>
<![CDATA[]]>
</queryString>
<background>
<band splitType="Stretch"/>
</background>
<summary>
<band height="389" splitType="Stretch">
<textField hyperlinkType="LocalAnchor">
<reportElement x="430" y="350" width="100" height="30" uuid="53f9f5fa-df7a-4fa3-bc1d-57b8be0c130a"/>
<textFieldExpression><![CDATA["Anchor Target"]]></textFieldExpression>
<hyperlinkReferenceExpression><![CDATA["./result.pdf"]]></hyperlinkReferenceExpression>
<hyperlinkAnchorExpression><![CDATA["expert"]]></hyperlinkAnchorExpression>
</textField>
</band>
</summary>
</jasperReport>
Merged.pdf
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfCopy;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfSmartCopy;
public class MergePdf {
public static void main(String[] args) throws IOException, DocumentException {
String RESULT= "/home/expert/Desktop/result.pdf";
String[] files = {"/home/expert/Desktop/part1.pdf", "/home/expert/Desktop/part2.pdf"};
mergePDF(files,RESULT);
}
public static boolean mergePDF(String sourcefiles[],String targetfile){
Document document = new Document();
PdfCopy copy;
try {
//copy = new PdfCopy(document, new FileOutputStream(targetfile));
copy = new PdfSmartCopy(document, new FileOutputStream(targetfile));
document.open();
PdfReader reader;
int n;
for (int i = 0; i < sourcefiles.length; i++) {
reader = new PdfReader(sourcefiles[i]);
n = reader.getNumberOfPages();
for (int page = 0; page < n; )
copy.addPage(copy.getImportedPage(reader, ++page));
copy.freeReader(reader);
reader.close();
}
document.close();
System.out.println("INFO :: Merging Complete of temp files");
} catch (FileNotFoundException e) {
e.printStackTrace();
return false;
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
}

Answer 1

Consider to merge the JasperPrint and then to export to pdf, using the SimpleExporterInput.getInstance(List<JasperPrint>) as exporter input
This will make the bookmarks and anchors work correctly
Example
Map<String, Object> paramMap = new HashMap<String, Object>();
JasperReport report1 = JasperCompileManager.compileReport("part1.jrxml");
JasperReport report2 = JasperCompileManager.compileReport("part2.jrxml");
//Get all the JasperPrint and add them to my list
List<JasperPrint> jasperPrintList = new ArrayList<JasperPrint>();
JasperPrint jasperPrint1 = JasperFillManager.fillReport(report1, paramMap);
jasperPrintList.add(jasperPrint1);
JasperPrint jasperPrint2 = JasperFillManager.fillReport(report2, paramMap);
jasperPrintList.add(jasperPrint2);
JRPdfExporter exporter = new JRPdfExporter();
exporter.setExporterInput(SimpleExporterInput.getInstance(jasperPrintList)); //Set as export input my list with JasperPrint s
exporter.setExporterOutput(new SimpleOutputStreamExporterOutput("pdf/BookmarkTest.pdf"));
SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
configuration.setCreatingBatchModeBookmarks(true);
exporter.setConfiguration(configuration);
exporter.exportReport();