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Sample Java code for using PDFTron SDK to directly convert HTML pages to PDF by using 'pdftron.PDF.HTML2PDF'. The HTML2PDF converter supports conversion from a string or URL and offers many options to control page size and formatting. Learn more about our Java PDF Library and PDF Conversion Library.
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//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2023 by Apryse Software Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------
import com.pdftron.pdf.*;
import com.pdftron.sdf.*;
public class HTML2PDFTest {
//---------------------------------------------------------------------------------------
// The following sample illustrates how to convert HTML pages to PDF format using
// the HTML2PDF class.
//
// 'pdftron.PDF.HTML2PDF' is an optional PDFNet Add-On utility class that can be
// used to convert HTML web pages into PDF documents by using an external module (html2pdf).
//
// html2pdf modules can be downloaded from http://www.pdftron.com/pdfnet/downloads.html.
//
// Users can convert HTML pages to PDF using the following operations:
// - Simple one line static method to convert a single web page to PDF.
// - Convert HTML pages from URL or string, plus optional table of contents, in user defined order.
// - Optionally configure settings for proxy, images, java script, and more for each HTML page.
// - Optionally configure the PDF output, including page size, margins, orientation, and more.
// - Optionally add table of contents, including setting the depth and appearance.
//---------------------------------------------------------------------------------------
public static void main(String[] args) {
String output_path = "../../TestFiles/Output/html2pdf_example";
String host = "https://www.pdftron.com";
String page0 = "/";
String page1 = "/support";
String page2 = "/blog";
// The first step in every application using PDFNet is to initialize the
// library and set the path to common PDF resources. The library is usually
// initialized only once, but calling initialize() multiple times is also fine.
PDFNet.initialize(PDFTronLicense.Key());
// For HTML2PDF we need to locate the html2pdf module. If placed with the
// PDFNet library, or in the current working directory, it will be loaded
// automatically. Otherwise, it must be set manually using HTML2PDF.SetModulePath().
try {
HTML2PDF.setModulePath("../../../Lib");
if(!HTML2PDF.isModuleAvailable())
{
System.out.println();
System.out.println("Unable to run HTML2PDFTest: Apryse SDK HTML2PDF module not available.");
System.out.println("---------------------------------------------------------------");
System.out.println("The HTML2PDF module is an optional add-on, available for download");
System.out.println("at https://www.pdftron.com/. If you have already downloaded this");
System.out.println("module, ensure that the SDK is able to find the required files");
System.out.println("using the HTML2PDF.setModulePath() function." );
System.out.println();
return;
}
} catch (Exception e) {
e.printStackTrace();
return;
}
//--------------------------------------------------------------------------------
// Example 1) Simple conversion of a web page to a PDF doc.
try {
PDFDoc doc = new PDFDoc();
// now convert a web page, sending generated PDF pages to doc
if (HTML2PDF.convert(doc, host + page0))
doc.save(output_path + "_01.pdf", SDFDoc.SaveMode.LINEARIZED, null);
else
System.out.println("Conversion failed.");
doc.close();
} catch (Exception e) {
e.printStackTrace();
return;
}
//--------------------------------------------------------------------------------
// Example 2) Modify the settings of the generated PDF pages and attach to an
// existing PDF document.
try {
// open the existing PDF, and initialize the security handler
PDFDoc doc = new PDFDoc("../../TestFiles/numbered.pdf");
doc.initSecurityHandler();
// create the HTML2PDF converter object and modify the output of the PDF pages
HTML2PDF converter = new HTML2PDF();
converter.setPaperSize(PrinterMode.e_11x17);
// insert the web page to convert
converter.insertFromURL(host + page0);
// convert the web page, appending generated PDF pages to doc
if (converter.convert(doc))
doc.save(output_path + "_02.pdf", SDFDoc.SaveMode.LINEARIZED, null);
else
System.out.println("Conversion failed. HTTP Code: " + converter.getHTTPErrorCode() + "\n" + converter.getLog());
doc.close();
} catch (Exception e) {
e.printStackTrace();
return;
}
//--------------------------------------------------------------------------------
// Example 3) Convert multiple web pages
try {
// convert page 0 into pdf
PDFDoc doc = new PDFDoc();
HTML2PDF converter = new HTML2PDF();
String header = "<div style='width:15%;margin-left:0.5cm;text-align:left;font-size:10px;color:#0000FF'><span class='date'></span></div><div style='width:70%;direction:rtl;white-space:nowrap;overflow:hidden;text-overflow:clip;text-align:center;font-size:10px;color:#0000FF'><span>PDFTRON HEADER EXAMPLE</span></div><div style='width:15%;margin-right:0.5cm;text-align:right;font-size:10px;color:#0000FF'><span class='pageNumber'></span> of <span class='totalPages'></span></div>";
String footer = "<div style='width:15%;margin-left:0.5cm;text-align:left;font-size:7px;color:#FF00FF'><span class='date'></span></div><div style='width:70%;direction:rtl;white-space:nowrap;overflow:hidden;text-overflow:clip;text-align:center;font-size:7px;color:#FF00FF'><span>PDFTRON FOOTER EXAMPLE</span></div><div style='width:15%;margin-right:0.5cm;text-align:right;font-size:7px;color:#FF00FF'><span class='pageNumber'></span> of <span class='totalPages'></span></div>";
converter.setHeader(header);
converter.setFooter(footer);
converter.setMargins("1cm", "2cm", ".5cm", "1.5cm");
HTML2PDF.WebPageSettings settings = new HTML2PDF.WebPageSettings();
settings.setZoom(0.5);
converter.insertFromURL(host + page0, settings);
Boolean is_conversion_0_successful = converter.convert(doc);
// convert page 1 with the same settings, appending generated PDF pages to doc
converter.insertFromURL(host + page1, settings);
Boolean is_conversion_1_successful = converter.convert(doc);
// convert page 2 with different settings, appending generated PDF pages to doc
HTML2PDF another_converter = new HTML2PDF();;
another_converter.setLandscape(true);
HTML2PDF.WebPageSettings another_settings = new HTML2PDF.WebPageSettings();
another_settings.setPrintBackground(false);
another_converter.insertFromURL(host + page2, another_settings);
Boolean is_conversion_2_successful = another_converter.convert(doc);
if(is_conversion_0_successful && is_conversion_1_successful && is_conversion_2_successful)
doc.save(output_path + "_03.pdf", SDFDoc.SaveMode.LINEARIZED, null);
else
System.out.println("Conversion failed. HTTP Code: " + converter.getHTTPErrorCode() + "\n" + converter.getLog());
doc.close();
} catch (Exception e) {
e.printStackTrace();
return;
}
//--------------------------------------------------------------------------------
// Example 4) Convert HTML string to PDF.
try {
PDFDoc doc = new PDFDoc();
HTML2PDF converter = new HTML2PDF();
// Our HTML data
String html = "<html><body><h1>Heading</h1><p>Paragraph.</p></body></html>";
// Add html data
converter.insertFromHtmlString(html);
// Note, InsertFromHtmlString can be mixed with the other Insert methods.
if (converter.convert(doc))
doc.save(output_path + "_04.pdf", SDFDoc.SaveMode.LINEARIZED, null);
else
System.out.println("Conversion failed. HTTP Code: " + converter.getHTTPErrorCode() + "\n" + converter.getLog());
doc.close();
} catch (Exception e) {
e.printStackTrace();
return;
}
PDFNet.terminate();
}
}