Parsing more than one HTML files to a single PDF
These examples were written in answer to the question Click How to parse multiple HTML files into a single PDF?
parsemultiplehtmlfiles1
JAVA
JAVA
/**
* Example written by Bruno Lowagie in answer to the following question:
* http://stackoverflow.com/questions/27814701/itextsharp-how-to-use-htmlworker-to-covert-html-to-pdf-with-pagination
*/
package sandbox.xmlworker;
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.PdfWriter;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import sandbox.WrapToTest;
/**
*
* @author iText
*/
@WrapToTest
public class ParseMultipleHtmlFiles1 {
public static final String[] HTML = {
"resources/xml/page1.html",
"resources/xml/page2.html",
"resources/xml/page3.html"
};
public static final String DEST = "results/xmlworker/multiple_html_pages1.pdf";
public static void main(String[] args) throws IOException, DocumentException {
File file = new File(DEST);
file.getParentFile().mkdirs();
new ParseMultipleHtmlFiles1().createPdf(DEST);
}
/**
* Creates a PDF with the words "Hello World"
* @param file
* @throws IOException
* @throws DocumentException
*/
public void createPdf(String file) throws IOException, DocumentException {
Document document = new Document();
PdfCopy copy = new PdfCopy(document, new FileOutputStream(file));
document.open();
PdfReader reader;
for (String html : HTML) {
reader = new PdfReader(parseHtml(html));
copy.addDocument(reader);
reader.close();
}
document.close();
}
public byte[] parseHtml(String html) throws DocumentException, IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// step 1
Document document = new Document();
// step 2
PdfWriter writer = PdfWriter.getInstance(document, baos);
// step 3
document.open();
// step 4
XMLWorkerHelper.getInstance().parseXHtml(writer, document,
new FileInputStream(html));
// step 5
document.close();
// return the bytes of the PDF
return baos.toByteArray();
}
}
parsemultiplehtmlfiles2
JAVA
JAVA
/**
* Example written by Bruno Lowagie in answer to the following question:
* http://stackoverflow.com/questions/27814701/itextsharp-how-to-use-htmlworker-to-covert-html-to-pdf-with-pagination
*/
package sandbox.xmlworker;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Utilities;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.ElementList;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import sandbox.WrapToTest;
/**
*
* @author iText
*/
@WrapToTest
public class ParseMultipleHtmlFiles2 {
public static final String[] HTML = {
"resources/xml/page1.html",
"resources/xml/page2.html",
"resources/xml/page3.html"
};
public static final String DEST = "results/xmlworker/multiple_html_pages2.pdf";
public static void main(String[] args) throws IOException, DocumentException {
File file = new File(DEST);
file.getParentFile().mkdirs();
new ParseMultipleHtmlFiles2().createPdf(DEST);
}
/**
* Creates a PDF with the words "Hello World"
* @param file
* @throws IOException
* @throws DocumentException
*/
public void createPdf(String file) throws IOException, DocumentException {
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(file));
document.open();
String css = readCSS();
for (String htmlfile : HTML) {
String html = Utilities.readFileToString(htmlfile);
ElementList list = XMLWorkerHelper.parseToElementList(html, css);
for (Element e : list) {
document.add(e);
}
document.newPage();
}
document.close();
}
private String readCSS() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int length;
InputStream is = XMLWorkerHelper.class.getResourceAsStream("/default.css");
while ((length = is.read(buffer)) != -1) {
baos.write(buffer, 0, length);
}
return new String(baos.toByteArray());
}
}