您所在位置：主题：怎样运行java文件?
itzhiren
[专家分：1540] 发布于 2006-02-24 09:03:00
我在教程上面看到一个例子,有一个ReadFile.java文件,有一个read.jsp用javabean来调用,运行的时候,有这样一个错误:
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
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: 10 in the jsp file: /read.jsp
Generated servlet error:
[javac] Compiling 1 source file
D:\Tomcat 4.1\work\Standalone\localhost\jsp\read_jsp.java:52: package ch8 does not exist
ch8.ReadFile reader = null;
^
An error occurred at line: 10 in the jsp file: /read.jsp
Generated servlet error:
D:\Tomcat 4.1\work\Standalone\localhost\jsp\read_jsp.java:54: package ch8 does not exist
reader = (ch8.ReadFile) pageContext.getAttribute("reader", PageContext.REQUEST_SCOPE);
^
An error occurred at line: 10 in the jsp file: /read.jsp
Generated servlet error:
D:\Tomcat 4.1\work\Standalone\localhost\jsp\read_jsp.java:57: package ch8 does not exist
reader = (ch8.ReadFile) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "ch8.ReadFile");
^
3 errors
,[color=FF0000]请问应该怎样正确调用.java文件呢?
.java文件我已经编译了,在当前目录下面生成了一个ch8的文件夹,里面有ReadFile.class一个文件;
read.jsp的内容如下:[/color]<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JSP读取文件</title>
</head>
<body>
<%--调用javabean--%>
<jsp:useBean id="reader" class="ch8.ReadFile" scope="request">
<jsp:setProperty name="reader" property="path" value="e:\\jsp\\datafile.txt" />
</jsp:useBean>
<h3>文件内容</h3>
<p>
<% int count=0; %>
<% while (reader.nextRecord()!=-1){ %>
<% count++; %>
<b>第<%= count %>行;</b>
<% out.print(reader.returnRecord()); %><br />
<% } %>
</p>
</body>
</html>
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
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: 10 in the jsp file: /read.jsp
Generated servlet error:
[javac] Compiling 1 source file
D:\Tomcat 4.1\work\Standalone\localhost\jsp\read_jsp.java:52: package ch8 does not exist
ch8.ReadFile reader = null;
^
An error occurred at line: 10 in the jsp file: /read.jsp
Generated servlet error:
D:\Tomcat 4.1\work\Standalone\localhost\jsp\read_jsp.java:54: package ch8 does not exist
reader = (ch8.ReadFile) pageContext.getAttribute("reader", PageContext.REQUEST_SCOPE);
^
An error occurred at line: 10 in the jsp file: /read.jsp
Generated servlet error:
D:\Tomcat 4.1\work\Standalone\localhost\jsp\read_jsp.java:57: package ch8 does not exist
reader = (ch8.ReadFile) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "ch8.ReadFile");
^
3 errors
,[color=FF0000]请问应该怎样正确调用.java文件呢?
.java文件我已经编译了,在当前目录下面生成了一个ch8的文件夹,里面有ReadFile.class一个文件;
read.jsp的内容如下:[/color]<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JSP读取文件</title>
</head>
<body>
<%--调用javabean--%>
<jsp:useBean id="reader" class="ch8.ReadFile" scope="request">
<jsp:setProperty name="reader" property="path" value="e:\\jsp\\datafile.txt" />
</jsp:useBean>
<h3>文件内容</h3>
<p>
<% int count=0; %>
<% while (reader.nextRecord()!=-1){ %>
<% count++; %>
<b>第<%= count %>行;</b>
<% out.print(reader.returnRecord()); %><br />
<% } %>
</p>
</body>
</html>
