Hey!
Tom, why go through all of this trouble. Just use RandomAccessFile and forget
all of the stream stuff. He just wants to find the end of the file.
out.seek(out.length()); //shoosh
Just my two cents worth. This is all off topic for SERVLET-INTEREST.
Danny Rubis
Tom Kochanowicz wrote:
> Hi Steve,
>
> I believe you need to use the FileOutputStream in the below manner so that
> it does not erase an existing file, for example:
>
> import file.io.*
>
> public class AltAppendFileOutputStream extends FileOutputStream{
> protected FileInputStream file;
>
> public AltAppendFileOutputStream (String fileName) throws IOException{
> super((new RandomAccessFile(fileName, "rw")).getFD());
> file = new FileInputStream (getFD());
> int n = file.available();
> do{
> n -= file.skip(n);
> }
> while (n > 0);
> }
> }
>
> Tom Kochanowicz
>
> -----Original Message-----
> From: A mailing list for discussion about Sun Microsystem's Java Servlet
> API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
> Steven Lau
> Sent: Sunday, December 12, 1999 11:07 AM
> To: [EMAIL PROTECTED]
> Subject: logging to text file
>
> I'm doing some custom logging to a text file to make things easier and
> cheaper than to logging to a database. The servlet would get the header
> information, session Id and so on and attemps to log it to a file. The
> problem I have is I don't know how to insert it to a file instead of
> overwritting it. Instead of having multiple entries, it will open the file
> and overwrite what's on it resulting in a file having only one log.
>
> Here is my code:
> try {
> String outputFileName = "F:" + File.separatorChar + "LLog.txt";
> FileWriter fout = new FileWriter(outputFileName);
> String newLine = System.getProperty("line.separator");
> String data = session.getValue("userID") + ";" + session.getId() + ";" +
> request.getRemoteAddr() + ";" + date + newLine;
> fout.write(data);
> fout.close();
> } catch(java.io.IOException e) {
> System.out.println("Cannot access LLog.txt");
> }
>
> How would I modify it so it will insert the log at the end of the file and
> not overwritting previous entries?
>
> Thanks!!!!
>
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