Java tutorial
/* File: CreateSubscriberListAction.java Created: 05-06-17@23:55 Task: Creates PDF with the given parameters... Author: Peter Matjeschk This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package de.tr1.cooperator.manager.web; import de.tr1.cooperator.manager.mainframe.EventManager; import de.tr1.cooperator.manager.mainframe.EventResultManager; import de.tr1.cooperator.manager.mainframe.UserManager; import de.tr1.cooperator.manager.system.Log; import de.tr1.cooperator.model.mainframe.Event; import de.tr1.cooperator.model.mainframe.ExamResult; import de.tr1.cooperator.model.mainframe.User; import de.tr1.cooperator.model.web.CreateSubscriberListForm; import de.tr1.cooperator.model.web.UserResult; import de.tr1.cooperator.model.web.UserResultSortByName; import de.tr1.cooperator.model.web.UserResultSortByPersonalNumber; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionMessage; import org.apache.struts.action.ActionErrors; import java.text.*; import com.lowagie.text.*; import com.lowagie.text.pdf.*; import java.io.FileOutputStream; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.Collection; import java.util.Iterator; import java.util.Collections; /** * This class handles the actions called by the struts-framework * * @author Peter Matjeschk * @version 05-06-20@12:00 */ public class CreateSubscriberListAction extends Action { private final int TABLECELL_FONTSIZE = 10; private final int TABLEHEADER_FONTSIZE = 12; private final String TABLEHEADER_NUMBER = "Nr. "; private final String TABLEHEADER_PERSONALNUMBER = "Mtr.-Nr."; private final String TABLEHEADER_NAME = "Name "; private final String TABLEHEADER_EMAIL = "eMail "; private final String TABLEHEADER_RESULT = "Ergebnis"; private final String TABLEHEADER_INFO = "Bemerkungen "; private final String TABLEHEADER_SIGN = "Unterschrift"; /** * This method is called by the struts-framework if the submit-button is pressed. * It creates a PDF-File and puts in into the output-stream of the response. */ public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { CreateSubscriberListForm myForm = (CreateSubscriberListForm) form; boolean bSortByName; if (myForm.getSortBy().equals(myForm.SORTBYPN)) bSortByName = false; else bSortByName = true; //create Collection for the results... Event eEvent = EventManager.getInstance().getEventByID(myForm.getEventID()); Collection cSubscriberList = UserManager.getInstance().getUsersByCollection(eEvent.getSubscriberList()); Collection cExamResults = EventResultManager.getInstance().getResults(eEvent.getID()); Iterator cSubscriberListIT = cSubscriberList.iterator(); Collection cSubscriberResultList = new ArrayList(); while (cSubscriberListIT.hasNext()) { User CurUser = (User) cSubscriberListIT.next(); String UserPNR = CurUser.getPersonalNumber(); Iterator cExamResultsIT = cExamResults.iterator(); ExamResult curExamResult = null; String ResultUserPNR = null; while (cExamResultsIT.hasNext()) { curExamResult = (ExamResult) cExamResultsIT.next(); ResultUserPNR = curExamResult.getUserPersonalNumber(); if (UserPNR.equals(ResultUserPNR)) break; } if (UserPNR.equals(ResultUserPNR)) { if (bSortByName) { UserResultSortByName URS = new UserResultSortByName(CurUser, "" + curExamResult.getResult()); cSubscriberResultList.add(URS); } else { UserResultSortByPersonalNumber URS = new UserResultSortByPersonalNumber(CurUser, "" + curExamResult.getResult()); cSubscriberResultList.add(URS); } } else { if (bSortByName) { UserResultSortByName URS = new UserResultSortByName(CurUser, "-"); cSubscriberResultList.add(URS); } else { UserResultSortByPersonalNumber URS = new UserResultSortByPersonalNumber(CurUser, "-"); cSubscriberResultList.add(URS); } } } //sort List Collections.sort((List) cSubscriberResultList); BaseFont bf; //36pt = 0.5inch Document document = new Document(PageSize.A4, 36, 36, 72, 72); try { bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED); } catch (Exception e) { Log.addLog("CreateSubscriberListAction: Error creating BaseFont: " + e); //2do: add ErrorMessage and return to inputFormular! return mapping.findForward("GeneralFailure"); } //calculate the number of cols and their width int cols = 0; ArrayList alWidth = new ArrayList(); float boldItalicFactor = 1.2f; if (myForm.getShowNumber()) alWidth.add(new Float(boldItalicFactor * bf.getWidthPoint(TABLEHEADER_NUMBER, TABLEHEADER_FONTSIZE))); if (myForm.getShowPersonalNumber()) alWidth.add(new Float( boldItalicFactor * bf.getWidthPoint(TABLEHEADER_PERSONALNUMBER, TABLEHEADER_FONTSIZE))); if (myForm.getShowName()) alWidth.add(new Float(boldItalicFactor * bf.getWidthPoint(TABLEHEADER_NAME, TABLEHEADER_FONTSIZE))); if (myForm.getShowEmail()) alWidth.add(new Float(boldItalicFactor * bf.getWidthPoint(TABLEHEADER_EMAIL, TABLEHEADER_FONTSIZE))); if (myForm.getShowResult()) alWidth.add(new Float(boldItalicFactor * bf.getWidthPoint(TABLEHEADER_RESULT, TABLEHEADER_FONTSIZE))); if (myForm.getAddInfoField()) alWidth.add(new Float(boldItalicFactor * bf.getWidthPoint(TABLEHEADER_INFO, TABLEHEADER_FONTSIZE))); if (myForm.getAddSignField()) alWidth.add(new Float(boldItalicFactor * bf.getWidthPoint(TABLEHEADER_SIGN, TABLEHEADER_FONTSIZE))); cols = alWidth.size(); float totalWidth = 0; //calculate the whole length Iterator alIterator = alWidth.iterator(); for (; alIterator.hasNext(); totalWidth += ((Float) alIterator.next()).floatValue()) ; //calculate relativ width for the table float[] width = new float[cols]; alIterator = alWidth.iterator(); int i = 0; while (alIterator.hasNext()) { float pixLength = ((Float) alIterator.next()).floatValue(); //alWidthRelativ.add( new Float( pixLength/totalWidth ) ); width[i] = pixLength / totalWidth; i++; } //needed for the shrink (enlarge?) float shrinkFactor; try { //1st: set correct outputstream PdfWriter writer = PdfWriter.getInstance(document, response.getOutputStream()); //1.5st: set content-stuff response.setContentType("application/pdf"); //2nd: set EventManager for PageEvents to Helper writer.setPageEvent( new CreateSubscriberListActionHelper(myForm.getHeaderLeft(), myForm.getHeaderRight())); //3rd: open document for editing the content document.open(); //4th: add content Phrase pInfoText = new Phrase(myForm.getInfoText(), new Font(bf, 12, Font.BOLD)); document.add(pInfoText); //PdfPTable( cols ) PdfPTable table = new PdfPTable(width); float documentWidth = document.right() - document.left(); if (documentWidth < totalWidth) { table.setTotalWidth(documentWidth); shrinkFactor = documentWidth / totalWidth; } else { table.setTotalWidth(totalWidth); shrinkFactor = 1; } table.setLockedWidth(true); Font headerFont = new Font(bf, TABLEHEADER_FONTSIZE * shrinkFactor, Font.BOLDITALIC); Font cellFont = new Font(bf, TABLECELL_FONTSIZE * shrinkFactor, Font.NORMAL); if (myForm.getShowNumber()) table.addCell(new Phrase(TABLEHEADER_NUMBER, headerFont)); if (myForm.getShowPersonalNumber()) table.addCell(new Phrase(TABLEHEADER_PERSONALNUMBER, headerFont)); if (myForm.getShowName()) table.addCell(new Phrase(TABLEHEADER_NAME, headerFont)); if (myForm.getShowEmail()) table.addCell(new Phrase(TABLEHEADER_EMAIL, headerFont)); if (myForm.getShowResult()) table.addCell(new Phrase(TABLEHEADER_RESULT, headerFont)); if (myForm.getAddInfoField()) table.addCell(new Phrase(TABLEHEADER_INFO, headerFont)); if (myForm.getAddSignField()) table.addCell(new Phrase(TABLEHEADER_SIGN, headerFont)); //fill table Iterator iSRL = cSubscriberResultList.iterator(); int counter = 1; while (iSRL.hasNext()) { UserResult curResult = (UserResult) iSRL.next(); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_RIGHT); if (myForm.getShowNumber()) table.addCell(new Phrase("" + counter++, cellFont)); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); if (myForm.getShowPersonalNumber()) table.addCell(new Phrase(curResult.getPersonalNumber(), cellFont)); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); if (myForm.getShowName()) table.addCell(new Phrase(curResult.getSurname() + ", " + curResult.getFirstName(), cellFont)); if (myForm.getShowEmail()) table.addCell(new Phrase(curResult.getEmailAddress(), cellFont)); if (myForm.getShowResult()) table.addCell(new Phrase(curResult.getResult(), cellFont)); if (myForm.getAddInfoField()) table.addCell(new Phrase("", cellFont)); if (myForm.getAddSignField()) table.addCell(new Phrase("", cellFont)); } //set how many rows are header... table.setHeaderRows(1); document.add(table); //5th: close document, write the output to the stream... document.close(); } catch (Exception de) { Log.addLog("CreateSubscriberListAction: Error creating PDF: " + de); } //we dont need to return a forward, because we write directly to the outputstream! return null; } }