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Convert Office documents (Excel word PowerPoint) to PDF using Java

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Java (Android)
Java
Kotlin

Sample Java code for using PDFTron SDK to convert Office documents to PDF (including Word, Excel, PowerPoint and Publisher) without needing any external dependencies or MS Office licenses. Office to PDF conversion can be performed on a Linux or Windows server to automate Office-centric workflows, or entirely in the user's client (web browser, mobile device). The conversion functionality can be combined with our Viewer to display or annotate Office files (docx, xlsx, pptx) on all major platforms, including Web, Android, iOS, Xamarin, UWP, and Windows. Learn more about our Java PDF Library and Office Document Conversion Library.

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//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2019 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

package com.pdftron.android.pdfnetsdksamples.samples;

import android.content.Context;

import com.pdftron.android.pdfnetsdksamples.OutputListener;
import com.pdftron.android.pdfnetsdksamples.PDFNetSample;
import com.pdftron.android.pdfnetsdksamples.R;
import com.pdftron.android.pdfnetsdksamples.util.Utils;
import com.pdftron.common.PDFNetException;
import com.pdftron.pdf.Convert;
import com.pdftron.pdf.DocumentConversion;
import com.pdftron.pdf.OfficeToPDFOptions;
import com.pdftron.pdf.PDFDoc;
import com.pdftron.pdf.PDFNet;
import com.pdftron.sdf.SDFDoc;

import java.io.File;
import java.util.ArrayList;

/**
 * The following sample illustrates how to use the PDF.Convert utility class to convert
 * .docx files to PDF
 * <p>
 * This conversion is performed entirely within the PDFNet and has *no* external or
 * system dependencies dependencies -- Conversion results will be the sam whether
 * on Windows, Linux or Android.
 * <p>
 * Please contact us if you have any questions.
 */
public class OfficeToPDFTest extends PDFNetSample {

	private static OutputListener mOutputListener;

	private static ArrayList<String> mFileList = new ArrayList<>();

    public OfficeToPDFTest(Context context) {
        try {
            String layoutPluginPath = Utils.copyResourceToTempFolder(context, R.raw.pdftron_layout_resources, false, "pdftron_layout_resources.plugin");
            PDFNet.addResourceSearchPath(layoutPluginPath);
            String layoutSmartPluginPath = Utils.copyResourceToTempFolder(context, R.raw.pdftron_smart_substitution, false, "pdftron_smart_substitution.plugin");
            PDFNet.addResourceSearchPath(layoutSmartPluginPath);
        } catch (Exception e) {
            mOutputListener.printError(e.getStackTrace());
        }

        setTitle(R.string.sample_officetopdf_title);
        setDescription(R.string.sample_officetopdf_description);
    }

	@Override
	public void run(OutputListener outputListener) {
		super.run(outputListener);
		mOutputListener = outputListener;
		mFileList.clear();
		printHeader(outputListener);
        File resFile = Utils.getAssetTempFile(INPUT_PATH + "pdftron_smart_substitution.plugin");
		PDFNet.setResourcesPath(resFile.getParent());

        // first the one-line conversion interface
        simpleDocxConvert("simple-word_2007.docx", "simple-word_2007_a.pdf");

        // then the more flexible line-by-line interface
        flexibleDocxConvert("the_rime_of_the_ancient_mariner.docx", "the_rime_of_the_ancient_mariner.pdf");
       

		for (String file : mFileList) {
			addToFileList(file);
		}
		printFooter(outputListener);
	}


    public static void simpleDocxConvert(String inputFilename, String outputFilename) {
        try {

            // perform the conversion with no optional parameters
            PDFDoc pdfdoc = new PDFDoc();
            Convert.officeToPdf(pdfdoc, Utils.getAssetTempFile(INPUT_PATH + inputFilename).getAbsolutePath(), null);

            // save the result
            pdfdoc.save(Utils.createExternalFile(outputFilename, mFileList).getAbsolutePath(), SDFDoc.SaveMode.INCREMENTAL, null);

            // And we're done!
            mOutputListener.println("Done conversion " + Utils.createExternalFile(outputFilename, mFileList).getAbsolutePath());
        } catch (PDFNetException e) {
            mOutputListener.println("Unable to convert MS Office document, error:");
            mOutputListener.printError(e.getStackTrace());
            mOutputListener.printError(e.getStackTrace());
        }
    }

    public static void flexibleDocxConvert(String inputFilename, String outputFilename) {
        try {
            OfficeToPDFOptions options = new OfficeToPDFOptions();
            options.setSmartSubstitutionPluginPath(INPUT_PATH);

            // create a conversion object -- this sets things up but does not yet
            // perform any conversion logic.
            // in a multithreaded environment, this object can be used to monitor
            // the conversion progress and potentially cancel it as well
            DocumentConversion conversion = Convert.streamingPdfConversion(
                    Utils.getAssetTempFile(INPUT_PATH + inputFilename).getAbsolutePath(), options);

            mOutputListener.println(inputFilename + ": " + Math.round(conversion.getProgress() * 100.0)
                    + "% " + conversion.getProgressLabel());

            // actually perform the conversion
            while (conversion.getConversionStatus() == DocumentConversion.e_incomplete) {
                conversion.convertNextPage();
                mOutputListener.println(inputFilename + ": " + Math.round(conversion.getProgress() * 100.0)
                        + "% " + conversion.getProgressLabel());
            }

            if (conversion.tryConvert() == DocumentConversion.e_success) {
                int num_warnings = conversion.getNumWarnings();

                // print information about the conversion
                for (int i = 0; i < num_warnings; ++i) {
                    mOutputListener.println("Warning: " + conversion.getWarningString(i));
                }

                // save the result
                PDFDoc doc = conversion.getDoc();
                doc.save(Utils.createExternalFile(outputFilename, mFileList).getAbsolutePath(), SDFDoc.SaveMode.INCREMENTAL, null);

                // done
                mOutputListener.println("Done conversion " + Utils.createExternalFile(outputFilename, mFileList).getAbsolutePath());
            } else {
                mOutputListener.println("Encountered an error during conversion: " + conversion.getErrorString());
            }
        } catch (PDFNetException e) {
            mOutputListener.println("Unable to convert MS Office document, error:");
            mOutputListener.printError(e.getStackTrace());
            mOutputListener.printError(e.getStackTrace());
        }
    }

}
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