Java tutorial
/** * Personalfragebogen 2.0. Revolutionize form data entry for taxation and * other purposes. * Copyright (C) 2015 Attila Bujaki, Werner Sembach, Jonas Grger, Oswaldo * Bejarano, Ardhi Sutadi, Nikitha Mohan, Benedikt Rauh * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package de.fau.amos4.util; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Iterator; import java.util.Locale; import java.util.Map; import net.lingala.zip4j.exception.ZipException; import net.lingala.zip4j.io.ZipOutputStream; import net.lingala.zip4j.model.ZipParameters; import net.lingala.zip4j.util.Zip4jConstants; import org.apache.pdfbox.exceptions.COSVisitorException; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.edit.PDPageContentStream; import org.apache.pdfbox.pdmodel.font.PDFont; import org.apache.pdfbox.pdmodel.font.PDType1Font; import org.springframework.context.NoSuchMessageException; import de.fau.amos4.configuration.AppContext; import de.fau.amos4.model.Employee; public class ZipGenerator { public void generate(OutputStream out, Locale locale, float height, Employee employee, int fontSize, String zipPassword) throws ZipException, NoSuchMessageException, IOException, COSVisitorException, CloneNotSupportedException { final ZipOutputStream zout = new ZipOutputStream(out); if (zipPassword == null) { // Use default password if none is set. zipPassword = "fragebogen"; } ZipParameters params = new ZipParameters(); params.setFileNameInZip("employee.txt"); params.setCompressionLevel(Zip4jConstants.COMP_DEFLATE); params.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_ULTRA); params.setEncryptFiles(true); params.setReadHiddenFiles(false); params.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES); params.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256); params.setPassword(zipPassword); params.setSourceExternalStream(true); zout.putNextEntry(null, params); zout.write((AppContext.getApplicationContext().getMessage("HEADER", null, locale) + "\n\n").getBytes()); zout.write( (AppContext.getApplicationContext().getMessage("print.section.personalData", null, locale) + "\n\n") .getBytes()); Iterator it = employee.getPersonalDataFields().entrySet().iterator(); while (it.hasNext()) { Map.Entry pair = (Map.Entry) it.next(); zout.write((pair.getKey() + ": " + pair.getValue() + '\n').getBytes()); it.remove(); // avoids a ConcurrentModificationException } zout.write(("\n\n" + AppContext.getApplicationContext().getMessage("print.section.taxes", null, locale) + "\n\n").getBytes()); it = employee.getTaxesFields().entrySet().iterator(); while (it.hasNext()) { Map.Entry pair = (Map.Entry) it.next(); zout.write((pair.getKey() + ": " + pair.getValue() + '\n').getBytes()); it.remove(); // avoids a ConcurrentModificationException } zout.closeEntry(); // Create a document and add a page to it PDDocument document = new PDDocument(); PDPage page = new PDPage(); document.addPage(page); float y = -1; int margin = 100; // Create a new font object selecting one of the PDF base fonts PDFont font = PDType1Font.TIMES_ROMAN; // Start a new content stream which will "hold" the to be created content PDPageContentStream contentStream = new PDPageContentStream(document, page); // Define a text content stream using the selected font, moving the cursor and drawing the text "Hello World" contentStream.beginText(); y = page.getMediaBox().getHeight() - margin + height; contentStream.moveTextPositionByAmount(margin, y); /* List<String> list = StringUtils.splitEqually(fileContent, 90); for (String e : list) { contentStream.moveTextPositionByAmount(0, -15); contentStream.drawString(e); } */ contentStream.setFont(PDType1Font.TIMES_BOLD, 36); contentStream.drawString(AppContext.getApplicationContext().getMessage("HEADER", null, locale)); contentStream.setFont(PDType1Font.TIMES_BOLD, 14); contentStream.moveTextPositionByAmount(0, -4 * height); contentStream.drawString( AppContext.getApplicationContext().getMessage("print.section.personalData", null, locale)); contentStream.moveTextPositionByAmount(0, -2 * height); contentStream.setFont(font, fontSize); it = employee.getPersonalDataFields().entrySet().iterator(); while (it.hasNext()) { StringBuffer nextLineToDraw = new StringBuffer(); Map.Entry pair = (Map.Entry) it.next(); nextLineToDraw.append(pair.getKey()); nextLineToDraw.append(": "); nextLineToDraw.append(pair.getValue()); contentStream.drawString(nextLineToDraw.toString()); contentStream.moveTextPositionByAmount(0, -height); it.remove(); // avoids a ConcurrentModificationException } contentStream.setFont(PDType1Font.TIMES_BOLD, 14); contentStream.moveTextPositionByAmount(0, -2 * height); contentStream .drawString(AppContext.getApplicationContext().getMessage("print.section.taxes", null, locale)); contentStream.moveTextPositionByAmount(0, -2 * height); contentStream.setFont(font, fontSize); it = employee.getTaxesFields().entrySet().iterator(); while (it.hasNext()) { StringBuffer nextLineToDraw = new StringBuffer(); Map.Entry pair = (Map.Entry) it.next(); nextLineToDraw.append(pair.getKey()); nextLineToDraw.append(": "); nextLineToDraw.append(pair.getValue()); contentStream.drawString(nextLineToDraw.toString()); contentStream.moveTextPositionByAmount(0, -height); it.remove(); // avoids a ConcurrentModificationException } contentStream.endText(); // Make sure that the content stream is closed: contentStream.close(); // Save the results and ensure that the document is properly closed: ByteArrayOutputStream pdfout = new ByteArrayOutputStream(); document.save(pdfout); document.close(); ZipParameters params2 = (ZipParameters) params.clone(); params2.setFileNameInZip("employee.pdf"); zout.putNextEntry(null, params2); zout.write(pdfout.toByteArray()); zout.closeEntry(); // Write the zip to client zout.finish(); zout.flush(); zout.close(); } }