JasperReport还可以导出为其它格式,如PDF,XLS,RTF,HTML,CSV
下面是导出为PDF和XLS文件
- Class.forName("com.mysql.jdbc.Driver");
- Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/jasperreportdb","root","root");
- try {
- //据据jasper文件生成JasperPrint对象
- JasperPrint jasperPrint = JasperFillManager.fillReport("WebRoot//JasperFile//report9.jasper", new HashMap(),connection);
- //生成我们的导出类JRPdfExporter 来自JRExporter
- JRPdfExporter jrpdfExporter = new JRPdfExporter();
- //设JasperPrint参数
- jrpdfExporter.setParameter(JRExporterParameter.JASPER_PRINT,jasperPrint);
- //设置输入的PDF文件放在什么地方
- jrpdfExporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, "WebRoot//JasperFile//exporter.pdf");
- //输出
- jrpdfExporter.exportReport();
- //Excel JExcelApiExporter 来自JRExporter
- JExcelApiExporter xlsExporter = new JExcelApiExporter();
- xlsExporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
- xlsExporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME,"WebRoot//JasperFile//exporter.xls");
- xlsExporter.exportReport();
- } catch (JRException e) {
- e.printStackTrace();
- }
在WEB上面生成HTML的报表
- public class HtmlReportServlet extends HttpServlet {
- private static final long serialVersionUID = 1L;
- public void doGet(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- try {
- //连结数据库
- Class.forName("com.mysql.jdbc.Driver");
- Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/jasperreportdb","root","root");
- //获得Jasper输入流
- InputStream inputStream = getServletConfig().getServletContext().getResourceAsStream("JasperFile//report9.jasper");
- //获得JasperPrint对象
- JasperPrint jasperPrint = JasperFillManager.fillReport(inputStream, new HashMap(),connection);
- connection.close();
- //设置格式
- response.setContentType("text/html");
- //获得输出流 ,这里不能这样response.getOutputStream()
- PrintWriter printWriter = response.getWriter();
- //创建JRHtmlExporter对象
- JRHtmlExporter htmlExporter = new JRHtmlExporter();
- //把jasperPrint到Session里面(net.sf.jasperreports.j2ee.jasper_print)
- request.getSession().setAttribute(ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jasperPrint);
- //设值jasperPrint
- htmlExporter.setParameter(JRExporterParameter.JASPER_PRINT,jasperPrint);
- //设置输出
- htmlExporter.setParameter(JRExporterParameter.OUTPUT_WRITER,printWriter);
- //设置图片生成的Servlet(生成图片就用这个ImageServlet,并且要在XML文件里面配置 image?image=这个是Servlet的url-pattern)
- htmlExporter.setParameter(JRHtmlExporterParameter.IMAGES_URI,"image?image=");
- //导出
- htmlExporter.exportReport();
- printWriter.close();
- } catch (SQLException e) {
- e.printStackTrace();
- } catch (ClassNotFoundException e) {
- e.printStackTrace();
- } catch (JRException e) {
- e.printStackTrace();
- }
- }
- public void doPost(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- this.doGet(request, response);
- }
- }
注意:这个因为用到了JasperReport里面的一个Servlet要在web.xml文件里配置好
- <servlet>
- <servlet-name>HtmlReportServlet</servlet-name>
- <servlet-class>com.langhua.JasperReport.Servlet.HtmlReportServlet</servlet-class>
- </servlet>
- <servlet>
- <servlet-name>ImageServlet</servlet-name>
- <servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class>
- </servlet>
- <!--url-pattern视你的情况而定,如果图片出不来,你就看他的连结是什么 -->
- <servlet-mapping>
- <servlet-name>ImageServlet</servlet-name>
- <url-pattern>/servlet/image</url-pattern>
- </servlet-mapping>