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Problem in JSP

Submitted by prasath_arjunan on Wed, 04/08/2009 - 09:28.

Hi,

I am struggling with the following problem. Can somebody pls help me?.

I am developing a wesbite for user can edit their files only, so i am going to develop a page for a Tree Structure in jsp.
I got one java code from internet, that working perfectly in java, it doesn't work after i converted in jsp. I don't know what is the problem in that code. If anybody knows the answer let me know....
When i run that code from jsp it throws the following error;

Error is:

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

An error occurred at line: 4 in the jsp file: /tree.jsp
Generated servlet error:
Syntax error on token "<"=", != expected

An error occurred at line: 4 in the jsp file: /tree.jsp
Generated servlet error:
Syntax error on token(s), misplaced construct(s)

An error occurred at line: 4 in the jsp file: /tree.jsp
Generated servlet error:
Syntax error on token ")", : expected

org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:386)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:280)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:259)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:247)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

Java class is:

package com.test;
import java.util.*;*
*import java.io.*;

public class FileListing {


  /**
  * Recursively walk a directory tree and return a List of all
  * Files found; the List is sorted using File.compareTo().
  *
  * @param aStartingDir is a valid directory, which can be read.
  */
  public static  List<File> getFileListing(File aStartingDir) throws FileNotFoundException
  {
    validateDirectory(aStartingDir);
    List<File> result = getFileListingNoSort(aStartingDir);
    Collections.sort(result);
    return result;
  }

  // PRIVATE //
  public static List<File> getFileListingNoSort(File aStartingDir) throws FileNotFoundException
  {
    List<File> result = new ArrayList<File>();
    File[] filesAndDirs = aStartingDir.listFiles();
    List<File> filesDirs = Arrays.asList(filesAndDirs);
    for(File file : filesDirs) {
      result.add(file); //always add, even if directory
      if ( ! file.isFile() ) {
        //must be a directory
        //recursive call!
        List<File> deeperList = getFileListingNoSort(file);
        result.addAll(deeperList);
      }
    }
    return result;
  }

  /**
  * Directory is valid if it exists, does not represent a file, and can be read.
  */
  public static void validateDirectory (File aDirectory) throws FileNotFoundException
  {
    if (aDirectory == null) {
      throw new IllegalArgumentException("Directory should not be null.");
    }
    if (!aDirectory.exists()) {
      throw new FileNotFoundException("Directory does not exist: " + aDirectory);
    }
    if (!aDirectory.isDirectory()) {
      throw new IllegalArgumentException("Is not a directory: " + aDirectory);
    }
    if (!aDirectory.canRead()) {
      throw new IllegalArgumentException("Directory cannot be read: " + aDirectory);
    }
  }
}

Jsp file is:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1" import="java.io.File,java.util.*,com.test.*"%>
<html>
    <body>
    <%
    try
    {
com.test.FileListing tt = new com.test.FileListing();

File startingDirectory = new File("D:/eclipse/workspace/cms/WebContent/");

List<File> files = tt.getFileListing(startingDirectory); //Error in this line

//print out all file names, in the the order of File.compareTo()
for(File file : files )
{
  System.out.println(file);
}
}
catch(Exception e)
{
out.println("Error ocurred : "+e);
}
%>
    </body>

</html>

Thanks in Advance,

V. Prasath.