Java开发网 - 大家帮忙看一下这个jsp代码的问题？

Topic: 大家帮忙看一下这个jsp代码的问题？

1.大家帮忙看一下这个jsp代码的问题？

Posted by: 晒太阳的牙齿
Posted on: 2006-12-05 21:55

大家帮忙看哈这个jsp代码的问题？？
jsp文件


.........................................................................................................................................

<html>

<head>

</head>
<body>
<jsp:useBean id="reader" class="readFile" scope="request">
<jsp:setProperty name="reader" property="path" value="d:/123.txt"/>
</jsp:useBean>
<center>文件类容</center>
<hr>
<% 
int n=0;
while(reader.nextRecord()!=-1)
  {
  n++;
%>

line<% out.println(n); %>
<% out.println(reader.returnRecord()); %>
<% 
  }

%>

</body>

</html>
........................................................................................................

bean的代码
...................................................................
import java.io.*;
import java.util.StringTokenizer;
public class readFile
{
  private String currentRecord=null;
  private BufferedReader file;
  private String path;
  private StringTokenizer token;
  public readFile()
            {
            file=new BufferedReader(new InputStreamReader(System.in),1);
               }
   
  public readFile(String filePath)
            {
               
               try
               {
               
            path=filePath;
            file=new BufferedReader(new FileReader(path));    
               }
               catch(FileNotFoundException e)
                {
                System.out.print("file not found!");    
                }
            }
  public void setPath(String filePath)
            {
            path=filePath;
            try
              {
              file=new BufferedReader(new FileReader(path));
              }
              catch(FileNotFoundException e)
              {
              System.out.print("file not found!");
              }
              
            }
  public String getPath()
              {
              return path;    
              }
          
  public void fileClose() throws IOException
  
                {
                file.close();    
                } 
                
  public int nextRecord()
                {
                int returnInt=-1;
                try
                  {
                  currentRecord=file.readLine();    
                  }
                  catch(IOException e)    
                  {
                  System.out.print("readLIne problem terminating!");    
                  }
                  
                  
                if(currentRecord==null)
                  {
                    returnInt=-1;
                       
                  }
                  else 
                  {
                    token=new StringTokenizer(currentRecord);
                    returnInt=token.countTokens();    
                  }
                return returnInt;
                }
                
  public double returnDouble()
                  {
                    double doubleReturn=Double.valueOf(token.nextToken()).doubleValue();
                    return doubleReturn;    
                  }
                  
  public int returnInt()
                {
                int returnint=Integer.parseInt(token.nextToken());
                return returnint;    
                }

  public String returnString()
                  {
                     
                  String stringReturn=token.nextToken();
                  return stringReturn;    
                  }
                  
                  
  public String returnRecord()
                  {
                       
                    return currentRecord;    
                       
                  }    
}

.......................................................

但我打开jsp时却出现
.........
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: 7 in the jsp file: /readfilebean.jsp
Generated servlet error:
D:\Tomcat 5.0\work\Catalina\localhost\file_text\org\apache\jsp\readfilebean_jsp.java:48: 找不到符号
符号：类 readFile
位置：类 org.apache.jsp.readfilebean_jsp
readFile reader = null;
^

An error occurred at line: 7 in the jsp file: /readfilebean.jsp
Generated servlet error:
D:\Tomcat 5.0\work\Catalina\localhost\file_text\org\apache\jsp\readfilebean_jsp.java:50: 找不到符号
符号：类 readFile
位置：类 org.apache.jsp.readfilebean_jsp
reader = (readFile) _jspx_page_context.getAttribute("reader", PageContext.REQUEST_SCOPE);
^

An error occurred at line: 7 in the jsp file: /readfilebean.jsp
Generated servlet error:
D:\Tomcat 5.0\work\Catalina\localhost\file_text\org\apache\jsp\readfilebean_jsp.java:52: 找不到符号
符号：类 readFile
位置：类 org.apache.jsp.readfilebean_jsp
reader = new readFile();
^
3 错误

org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

--------------------------------------------------------------------------------

Apache Tomcat/5.0.28

file_text.rar (1.08k)

2.Re:大家帮忙看哈这个jsp代码的问题？？ [Re: 晒太阳的牙齿]	Copy to clipboard
Posted by: informit Posted on: 2006-12-07 17:33 编译后的class文件有放到/WEB-INF/classes文件夹内么？