ireport + struts2整理

package com.bo.japser; import java.io.ByteArrayOutputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.sql.SQLException; import java.util.Collection; import java.util.HashMap; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.jasperreports.engine.JRDataSource; import net.sf.jasperreports.engine.JRException; import net.sf.jasperreports.engine.JRExporter; import net.sf.jasperreports.engine.JRExporterParameter; import net.sf.jasperreports.engine.JasperFillManager; import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource; import net.sf.jasperreports.engine.export.JRCsvExporter; import net.sf.jasperreports.engine.export.JRCsvExporterParameter; import net.sf.jasperreports.engine.export.JRHtmlExporter; import net.sf.jasperreports.engine.export.JRHtmlExporterParameter; import net.sf.jasperreports.engine.export.JRPdfExporter; import net.sf.jasperreports.engine.export.JRRtfExporter; import net.sf.jasperreports.engine.export.JRXlsExporter; import net.sf.jasperreports.engine.export.JRXmlExporter; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * 类说明：生成报表类 * 创建者：liuhui 创建时间：2009-4-16下午01:12:04 * 修改者： 修改时间： 修改原因： */ public class JasperReportsResult implements JasperReportConstants { private static final Log LOG = LogFactory.getLog(JasperReportsResult.class); private String imageServletUrl; // 图片路径 private String contentDisposition = null; private String documentName = null; //文件名 private String format = null; //文件格式 private String delimiter = null; public JasperReportsResult(){ imageServletUrl = IMAGE_SERVLET_URL; } public JasperReportsResult(String documentName, String format ){ this.documentName = documentName; this.format = format; imageServletUrl = IMAGE_SERVLET_URL; } public JasperReportsResult(String documentName, String format, String contentDisposition, String delimiter ){ this.documentName = documentName; this.format = format; this.contentDisposition = contentDisposition; this.delimiter = delimiter ; imageServletUrl = IMAGE_SERVLET_URL; } /** * 获取打印源 * @param stream 报表文件流 * @param params 报表参数%P{} * @param ds 数据源 * @return JasperPrint 打印源 * @throws FileNotFoundException * @throws SQLException * @throws JRException */ public JasperPrint fillReport(InputStream stream, Map params, JRDataSource ds) throws FileNotFoundException, SQLException, JRException { JasperPrint jasperPrint = null; if (params == null) { params = new HashMap(); } if (ds != null) { LOG.debug("Filling report use JRDataSource"); jasperPrint = JasperFillManager.fillReport(stream, params, ds); } return jasperPrint; } /** * 获取打印源 (集合) * @param stream 报表文件流 * @param params 报表参数%P{} * @param printList 数据源 (集合) * @return JasperPrint 打印源 * @throws FileNotFoundException * @throws SQLException * @throws JRException */ public JasperPrint fillReport(InputStream stream, Map params, Collection printList) throws FileNotFoundException, SQLException, JRException { JasperPrint jasperPrint = null; if (params == null) { params = new HashMap(); } if (printList != null) { LOG.debug("Filling report use JRDataSource"); jasperPrint = JasperFillManager.fillReport(stream, params, new JRBeanCollectionDataSource(printList) ); } return jasperPrint; } /** * 生成报表 （数据源为集合） * @param response * @param request * @param templateReportFile 报表文件名 * @param parameters 报表参数$P{} * @param printList 数据源 (集合） * @throws Exception */ public void doExecute(HttpServletResponse response,HttpServletRequest request, String templateReportFile, Map parameters, Collection printList) throws Exception { InputStream fileStream = Thread.currentThread().getContextClassLoader().getResourceAsStream(JasperReportConstants.REPORT_JASPER_PATH + templateReportFile); if (fileStream==null){ throw new FileNotFoundException("not find reportFile [" + templateReportFile + "]！"); } if (parameters == null) { parameters = new HashMap(); } byte[] output; JasperPrint jasperPrint = fillReport(fileStream, parameters, printList); // Export the print object to the desired output format try { if (contentDisposition != null || documentName != null) { final StringBuffer tmp = new StringBuffer(); tmp.append((contentDisposition == null) ? "inline" : contentDisposition); if (documentName != null) { tmp.append("; filename="); tmp.append(documentName); tmp.append("."); tmp.append(format.toLowerCase()); } response.setHeader("Content-disposition", tmp.toString()); } JRExporter exporter; if (format.equals(FORMAT_PDF)) { response.setContentType("application/pdf"); exporter = new JRPdfExporter(); } else if (format.equals(FORMAT_CSV)) { response.setContentType("text/plain"); exporter = new JRCsvExporter(); } else if (format.equals(FORMAT_HTML)) { response.setContentType("text/html"); Map imagesMap = new HashMap(); request.getSession(true).setAttribute("IMAGES_MAP", imagesMap); exporter = new JRHtmlExporter(); exporter.setParameter(JRHtmlExporterParameter.IMAGES_MAP, imagesMap); exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, (new StringBuilder()).append(request.getContextPath()).append(imageServletUrl).toString()); exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint); request.getSession().setAttribute("net.sf.jasperreports.j2ee.jasper_print", jasperPrint); } else if (format.equals(FORMAT_XLS)) { response.setContentType("application/vnd.ms-excel"); exporter = new JRXlsExporter(); } else if (format.equals(FORMAT_XML)) { response.setContentType("text/xml"); exporter = new JRXmlExporter(); } else if (format.equals(FORMAT_RTF)) { response.setContentType("application/rtf"); exporter = new JRRtfExporter(); } else { throw new ServletException("Unknown report format: " + format); } output = exportReportToBytes(jasperPrint, exporter); } catch (JRException e) { String message = "Error producing " + format + " report for uri " + templateReportFile; LOG.error(message, e); throw new ServletException(e.getMessage(), e); } response.setContentLength(output.length); // Will throw ServletException on IOException. writeReport(response, output); } /** * 生成报表 （数据源为集合） * @param response * @param request * @param templateReportFile 报表文件名 * @param parameters