JasperReport学习笔记7-导出成其它格式(pdf,xls,html)

转载自：http://blog.csdn.net/xingfeng0501/article/details/7756136

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

Java代码  



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 

Java代码  



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

Xml代码  



<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>  

转载自：http://langhua9527.iteye.com/blog/403478