222 lines
7.8 KiB
HTML
222 lines
7.8 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example: Using the IFSFile listFiles() method to list the contents of a directory" />
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<meta name="abstract" content="" />
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<meta name="description" content="" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="ifslistfilezexample" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Using the IFSFile listFiles() method to list the contents
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of a directory</title>
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</head>
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<body id="ifslistfilezexample"><a name="ifslistfilezexample"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Using the IFSFile listFiles() method to list the contents
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of a directory</h1>
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<div><p></p>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> Read the <a href="codedisclaimer.htm#codedisclaimer">Code
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example disclaimer</a> for important legal information.</div>
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<pre>//////////////////////////////////////////////////////////////////////////////////
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//
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// IFSListFiles example. This program uses the integrated file system
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// classes to list the contents of a directory on the server.
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//
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// Command syntax:
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// IFSListFiles system directory
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//
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// For example,
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// IFSListFiles MySystem /path1
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//
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//////////////////////////////////////////////////////////////////////////////////
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import java.io.*;
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import java.util.*;
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import com.ibm.as400.access.*;
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public class IFSListFiles extends Object
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{
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public static void main(String[] parameters)
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{
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System.out.println( " " );
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String directoryName = "";
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String system = "";
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// if both parameters were not specified, display help text and exit.
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if (parameters.length >= 2)
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{
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// Assume the first parameter is the system name and
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// the second parameter is the directory name
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system = parameters[0];
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directoryName = parameters[1];
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try
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{
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// Create an AS400 object for the server that holds the files.
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AS400 as400 = new AS400(system);
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// Create the IFSFile object for the directory.
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IFSFile directory = new IFSFile(as400, directoryName);
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// Generate a list of IFSFiles. Pass the listFiles method
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// the directory filter object and the search match
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// criteria. This method caches attribute information. For
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// instance, when isDirectory() is called on an IFSFile
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// object in the file array returned in the following code,
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// no call to the server is required.
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//
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// However, with the user of the listFiles method, attribute
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// information will not be refreshed automatically from the
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// server. This means attribute information can become
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// inconsistent with information about the server.
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IFSFile[] directoryFiles = directory.listFiles(new MyDirectoryFilter(),"*");
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// Tell the user if the directory doesn't exist or is empty
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if (directoryFiles == null)
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{
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System.out.println("The directory does not exist");
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return;
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}
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else if (directoryFiles.length == 0)
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{
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System.out.println("The directory is empty");
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return;
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}
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for (int i=0; i< directoryFiles.length; i++)
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{
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// Print out information on list.
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// Print the name of the current file
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System.out.print(directoryFiles[i].getName());
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// Pad the output so the columns line up
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for (int j = directoryFiles[i].getName().length(); j <18; j++)
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System.out.print(" ");
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// Print the date the file was last changed.
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long changeDate = directoryFiles[i].lastModified();
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Date d = new Date(changeDate);
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System.out.print(d);
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System.out.print(" ");
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// Print if the entry is a file or directory
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System.out.print(" ");
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if (directoryFiles[i].isDirectory())
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System.out.println("");
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else
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System.out.println(directoryFiles[i].length());
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}
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}
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catch (Exception e)
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{
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// If any of the above operations failed say the list failed
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// and output the exception.
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System.out.println("List failed");
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System.out.println(e);
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}
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}
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// Display help text when parameters are incorrect.
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else
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{
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System.out.println("");
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System.out.println("");
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System.out.println("");
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System.out.println("Parameters are not correct. Command syntax is:");
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System.out.println("");
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System.out.println(" IFSListFiles as400 directory");
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System.out.println("");
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System.out.println("Where");
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System.out.println("");
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System.out.println(" as400 = system that contains the files");
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System.out.println(" directory = directory to be listed");
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System.out.println("");
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System.out.println("For example:");
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System.out.println("");
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System.out.println(" IFSListFiles mySystem /dir1/dir2");
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System.out.println("");
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System.out.println("");
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}
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System.exit(0);
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}
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// The directory filter class prints information from the file object.
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//
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// Another way to use the filter is to simply return true or false
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// based on information in the file object. This lets the mainline
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// function decide what to do with the list of files that meet the
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// search criteria.
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//
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////////////////////////////////////////////////////////////////////////////
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class MyDirectoryFilter implements IFSFileFilter
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{
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public boolean accept(IFSFile file)
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{
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try
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{
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// Keep this entry. Returning true tells the IFSList object
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// to return this file in the list of entries returned to the
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// .list() method.
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return true;
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}
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catch (Exception e)
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{
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return false;
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}
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}
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}</pre>
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</div>
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</div>
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</body>
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</html>
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