Java tutorial
/* * The Kuali Financial System, a comprehensive financial management system for higher education. * * Copyright 2005-2014 The Kuali Foundation * * 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 org.kuali.kfs.module.ar.web.struts; import java.io.ByteArrayOutputStream; import java.io.File; import java.sql.Date; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.kuali.kfs.module.ar.report.service.AccountsReceivableReportService; import org.kuali.kfs.sys.KFSConstants; import org.kuali.kfs.sys.context.SpringContext; import org.kuali.rice.kns.util.WebUtils; import org.kuali.rice.kns.web.struts.action.KualiAction; import com.lowagie.text.Document; import com.lowagie.text.pdf.PdfCopy; import com.lowagie.text.pdf.PdfImportedPage; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.SimpleBookmark; /** * This class handles Actions for lookup flow */ public class CustomerInvoiceAction extends KualiAction { private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger .getLogger(CustomerInvoiceAction.class); /** * * This method... * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ public ActionForward start(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { return mapping.findForward(KFSConstants.MAPPING_BASIC); } /** * * This method... * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ public ActionForward cancel(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { return mapping.findForward(KFSConstants.MAPPING_BASIC); } /** * * This method... * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ public ActionForward clear(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { CustomerInvoiceForm ciForm = (CustomerInvoiceForm) form; ciForm.setChartCode(null); ciForm.setOrgCode(null); ciForm.setOrgType(null); ciForm.setRunDate(null); ciForm.setMessage(null); return mapping.findForward(KFSConstants.MAPPING_BASIC); } /** * * This method... * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ public ActionForward print(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { CustomerInvoiceForm ciForm = (CustomerInvoiceForm) form; String org = ciForm.getOrgCode(); String chart = ciForm.getChartCode(); Date date = ciForm.getRunDate(); StringBuilder fileName = new StringBuilder(); AccountsReceivableReportService reportService = SpringContext .getBean(AccountsReceivableReportService.class); List<File> reports = new ArrayList<File>(); if (ciForm.getOrgType() != null && chart != null && org != null) { if (ciForm.getOrgType().equals("B")) { reports = reportService.generateInvoicesByBillingOrg(chart, org, date); } else if (ciForm.getOrgType().equals("P")) { reports = reportService.generateInvoicesByProcessingOrg(chart, org, date); } fileName.append(chart); fileName.append(org); if (date != null) { fileName.append(date); } } else if (ciForm.getUserId() != null) { reports = reportService.generateInvoicesByInitiator(ciForm.getUserId(), date); fileName.append(ciForm.getUserId()); } if (reports.size() > 0) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); int pageOffset = 0; ArrayList master = new ArrayList(); int f = 0; Document document = null; PdfCopy writer = null; for (Iterator<File> itr = reports.iterator(); itr.hasNext();) { // we create a reader for a certain document String reportName = itr.next().getAbsolutePath(); PdfReader reader = new PdfReader(reportName); reader.consolidateNamedDestinations(); // we retrieve the total number of pages int n = reader.getNumberOfPages(); List bookmarks = SimpleBookmark.getBookmark(reader); if (bookmarks != null) { if (pageOffset != 0) { SimpleBookmark.shiftPageNumbers(bookmarks, pageOffset, null); } master.addAll(bookmarks); } pageOffset += n; if (f == 0) { // step 1: creation of a document-object document = new Document(reader.getPageSizeWithRotation(1)); // step 2: we create a writer that listens to the document writer = new PdfCopy(document, baos); // step 3: we open the document document.open(); } // step 4: we add content PdfImportedPage page; for (int i = 0; i < n;) { ++i; page = writer.getImportedPage(reader, i); writer.addPage(page); } writer.freeReader(reader); f++; } if (!master.isEmpty()) { writer.setOutlines(master); // step 5: we close the document } document.close(); fileName.append("-InvoiceBatchPDFs.pdf"); WebUtils.saveMimeOutputStreamAsFile(response, "application/pdf", baos, fileName.toString()); ciForm.setMessage(reports.size() + " Reports Generated"); return null; } ciForm.setMessage("No Reports Generated"); return mapping.findForward(KFSConstants.MAPPING_BASIC); } }