<%@ page import="net.sf.jasperreports.engine.*" %>
    <%@ page import="java.util.*" %>
    <%@ page import="java.io.*" %>
    <%@ page import="java.sql.*" %>
    <%
      //报表编译之后生成的.jasper 文件的存放位置
      File reportFile = new File(application.getRealPath("ireport/xueji.jasper"));
      //这个是用来联接我的mysql 的JDBC URL
      String url="jdbc:mysql://localhost:3306/xueji?useUnicode=true&characterEncoding=gb2312";
      Class.forName("org.gjt.mm.mysql.Driver").newInstance();
      //传递报表中用到的参数值
      Map parameters = new HashMap();
     //"Name"是报表中定义过的一个参数名称,其类型为String 型

     parameters.put("banji", new String(" c1"));
     System.out.println("---------conn-------------");
     //连接到数据库
     Connection conn = DriverManager.getConnection(url,"root","root");
     System.out.println("---------Jasper begin-------------");
     //在控制台显示一下报表文件的物理路径
     System.out.println(reportFile.getPath());
     byte[] bytes=JasperRunManager.runReportToPdf(reportFile.getPath(),parameters,conn);

     System.out.println("---------Jasper end-------------");
     response.setContentType("application/pdf");
     response.setContentLength(bytes.length);
     ServletOutputStream ouputStream = response.getOutputStream();
     ouputStream.write(bytes, 0, bytes.length);
     ouputStream.flush();
     ouputStream.close();
   %>

<%
    File reportFile = new File(application.getRealPath("/ireport/xueji.jasper"));
    JasperReport jasperReport = (JasperReport)JRLoader.loadObject(reportFile.getPath());
    Map parameters = new HashMap();
    parameters.put("baiji", "c1");
   //parameters.put("BaseDir", reportFile.getParentFile());    
   //JRBeanArrayDataSource jrDataSource = new JRBeanArrayDataSource(objects);//objects为要打印的实体数组；

    Class.forName("org.gjt.mm.mysql.Driver");
    Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/xueji","root","root");
    JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, conn);
          
    JRHtmlExporter exporter = new JRHtmlExporter();
    StringBuffer sbuffer = new StringBuffer();

    Map imagesMap = new HashMap();
    session.setAttribute("IMAGES_MAP", imagesMap);
    
    exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
    exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);
    //exporter.setParameter(JRHtmlExporterParameter.IMAGES_MAP, imagesMap);
    //exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, "/ireport/ireport_html.Image?image="); 
    //exporter.setParameter(JRHtmlExporterParameter.BETWEEN_PAGES_HTML, "
");
    exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);
    exporter.exportReport();
    //out.flush();
    conn.close();
   % >