tomcat下jsp查看jasperreport报表出现的问题

[boxnoodle]

我的jsp代码是：

<%@ page contentType="application/pdf;charset=GB2312"%>
<%@ page import="java.io.*" %>
<%@ page import="java.sql.*" %>
<%@ page errorPage="error.jsp" %>
<%@ page import="datasource.*" %>
<%@ page import="net.sf.jasperreports.engine.*" %>
<%@ page import="net.sf.jasperreports.engine.util.*" %>
<%@ page import="net.sf.jasperreports.engine.export.*" %>
<%@ page import="net.sf.jasperreports.j2ee.servlets.*" %>
<%@ page import="java.util.*" %>
<%
//报表编译之后生成的.jasper 文件的存放位置
File reportFile = new File(application.getRealPath("try0821.jasper"));
//这个是用来联接我的SQL Server 的JDBC URL
String url ="jdbc:mysql://localhost/firstdb";
Class.forName("com.mysql.jdbc.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("Name", new String("江敏"));
System.out.println("---------conn-------------");
//连接到数据库
Connection conn = DriverManager.getConnection(url,"root","060413");
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.getResourceAsStream(),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();
%>

在tomcat下浏览提示错误：

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: 27 in the jsp file: /try0821.jsp
The method getResourceAsStream() is undefined for the type File
24: System.out.println("---------Jasper begin-------------");
25: //在控制台显示一下报表文件的物理路径
26: System.out.println(reportFile.getPath());
27: byte[] bytes=JasperRunManager.runReportToPdf(reportFile.getResourceAsStream(),parameters,conn);
28: System.out.println("---------Jasper end-------------");
29: response.setContentType("application/pdf");
30: response.setContentLength(bytes.length);


Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:85)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:435)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:298)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:299)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

望高手或碰到类似情况的好心人指点。

[ajjjian]

jsp页面都没编译成功。。。。。。。
The method getResourceAsStream() is undefined for the type File
File类没有该方法的定义。。。
我以前用过写法如下：
JasperReport jasperReport = (JasperReport)JRLoader.loadObject(reportFile.getPath());
JasperPrint jasperPrint =
JasperFillManager.fillReport(
jasperReport,
parameters,
conn
);