ireport报表的html输出问题？

[wwx321]

<%
String fileName = JasperCompileManager.compileReportToFile("RTAReport.jrxml");
File reportFile = new File(fileName);

JasperReport jasperReport = (JasperReport)JRLoader.loadObject(reportFile.getPath());

Map parameters = new HashMap();
/*parameters.put("Reporttitle", "Address Report");
parameters.put("BaseDir", reportFile.getParentFile());*/

Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
Connection conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=HNDB_DATA","sa","");
JasperPrint jasperPrint =JasperFillManager.fillReport(jasperReport,parameters,conn);

JRHtmlExporter exporter = new JRHtmlExporter();
response.setContentType("text/html");
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, "image.jsp?image=");
exporter.exportReport();
%>
请问为什么一直无法输出html文档？？
能讲讲html输出的原理吗？？

[ccm1980]

这个应该在java文件中完成吧