import java.util.;
public class LogStrTok implements LogExample {
public static void main(String argv[]) {
StringTokenizer matcher = new StringTokenizer(logEntryLine);
System.out.println(tokens = + matcher.countTokens());
StringTokenizer CAN NOT count if you are changing the delimiter!
if (matcher.countTokens() != NUM_FIELDS) {
System.err.println(Bad log entry (or bug in StringTokenizer));
System.err.println(logEntryLine);
}
System.out.println(Hostname + matcher.nextToken());
StringTokenizer makes you ask for tokens in order to skip them
matcher.nextToken(); eat the -
matcher.nextToken(); again
System.out.println(DateTime + matcher.nextToken(]));
matcher.nextToken( ); again
System.out.println(Request + matcher.nextToken());
matcher.nextToken( ); again
System.out.println(Response + matcher.nextToken());
System.out.println(ByteCount + matcher.nextToken());
System.out.println(Referer + matcher.nextToken());
matcher.nextToken( ); again
System.out.println(User-Agent + matcher.nextToken());
}
}
Common fields for Apache Log demo.
interface LogExample {
The number of fields that must be found.
public static final int NUM_FIELDS = 9;
The sample log entry to be parsed.
public static final String logEntryLine = 123.45.67.89 - - [27Oct2000092709 -0400] GET javajavaResources.html HTTP1.0 200 10450 - Mozilla4.6 [en] (X11; U; OpenBSD 2.8 i386; Nav);
}
