Thread: Java code to to get files in a given directory from a server and do operations

Hello macquil7 and welcome to the Java Programming Forums

Yes this is possible. We have some code snippets in our tips & tutorials forum that may help you:

http://www.javaprogrammingforums.com...directory.html

http://www.javaprogrammingforums.com...tory-path.html

http://www.javaprogrammingforums.com...date-time.html

It would be easy enough to get a list of all files in a directory then compare that list against the same directory at another given date/time.

Is this what you are looking to do or are you thinking more advanced than this?

I can help you get started if you wish...

Hello macquil7,

Sure, I can help you get started. I have written this code for you..

This application will list all the files in a given directory and write the results to a dated log file. For example, auditlog-07-05-2009.txt

The next step would be to write an application to compare the results of 2 log files.

Let me know if you need help.

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Calendar;
 
public class ServerAudit {
 
    public static String files;
    public static String newLine = System.getProperty("line.separator");
 
     public static final String DATE_FORMAT_NOW = "dd-MM-yyyy HH:mm:ss";
     public static String dateTime;
     public static String date;
 
 
    /**
     * JavaProgrammingForums.com
     */
    public static void main(String[] args) {
 
        ServerAudit sa = new ServerAudit();
 
        System.out.println(sa.DateTime());
        System.out.println("Files in Directory:");
        System.out.println("-------------------");
 
        date = DateTime().substring(0, 10);
        sa.ListFiles();
 
    }
 
    public void ListFiles() {
 
        try {
 
            // For writing file list to log file
            Writer output = null;
            File file = new File("auditlog-" + date + ".txt");
            output = new BufferedWriter(new FileWriter(file));
 
            // Directory path here
            // . = application root
            String path = ".";
 
            File folder = new File(path);
            File[] listOfFiles = folder.listFiles();
 
            output.write(DateTime());
            output.write(newLine);
 
            for (int i = 0; i < listOfFiles.length; i++) {
 
                if (listOfFiles[i].isFile()) {
                    files = listOfFiles[i].getName();
 
                    if (!files.equals("auditlog-" + date + ".txt")) {
 
                        System.out.println(files);
                        output.write(files);
                        output.write(newLine);
                    }
 
                }
            }
 
            output.close();
            System.out.println("");
            System.out.println("Audit Log file written");
 
        } catch (Exception e) {
            System.out.println(e);
        }
 
    }
 
     public static String DateTime() 
     {
         Calendar cal = Calendar.getInstance();
         SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
         return sdf.format(cal.getTime());
     }
 
 
}

Console output:

07-05-2009 10:03:54
Files in Directory:
-------------------
.classpath
.project

Audit Log file written

Hello macquil7,

Has this helped at all?

Originally Posted by macquil7

tried it but it only writes down date and timestamp in the generated text file.

i.e. 13-05-2009 11:19:04

I updated the value of spring path with the below

String path = "c:\\Program Files";

When you run this application, the date and time stamp is written into the log file with the other information. When the log file is generated & saved the date is also included in the log files name. For example auditlog-07-05-2009.txt. I have just tested this again and that is definitely what happens.

String path = "c:\\Program Files"; should list all the files in that directory. Is this not the case?

So you also want this to list folders as well as files and also check each folder in the given directory?

I have made a small edit here to include the folders as well:

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Calendar;
 
public class ServerAudit {
 
    public static String files;
    public static String newLine = System.getProperty("line.separator");
 
     public static final String DATE_FORMAT_NOW = "dd-MM-yyyy HH:mm:ss";
     public static String dateTime;
     public static String date;
 
 
    /**
     * JavaProgrammingForums.com
     */
    public static void main(String[] args) {
 
        ServerAudit sa = new ServerAudit();
 
        System.out.println(sa.DateTime());
        System.out.println("Files in Directory:");
        System.out.println("-------------------");
 
        date = DateTime().substring(0, 10);
        sa.ListFiles();
 
    }
 
    public void ListFiles() {
 
        try {
 
            // For writing file list to log file
            Writer output = null;
            File file = new File("auditlog-" + date + ".txt");
            output = new BufferedWriter(new FileWriter(file));
 
            // Directory path here
            // . = application root
            String path = ".";
 
            File folder = new File(path);
            File[] listOfFiles = folder.listFiles();
 
            output.write(DateTime());
            output.write(newLine);
 
            for (int i = 0; i < listOfFiles.length; i++) {
 
                    files = listOfFiles[i].getName();
 
                    if (!files.contains("auditlog-")) {
 
                        System.out.println(files);
                        output.write(files);
                        output.write(newLine);
                    }
 
                }
 
 
            output.close();
            System.out.println("");
            System.out.println("Audit Log file written");
 
        } catch (Exception e) {
            System.out.println(e);
        }
 
    }
 
     public static String DateTime() 
     {
         Calendar cal = Calendar.getInstance();
         SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
         return sdf.format(cal.getTime());
     }
 
}

If you wish to go into each of those folders and grab a list of all the files it starts to get a lot more complicated.
I haven't got time to look at this for you now but I will see if I can expand on this for you tomorrow.

Hello macquil7, did you get any further with this?