import org.apache.oro.text.regex.MalformedPatternException;
import org.apache.oro.text.regex.MatchResult;
import org.apache.oro.text.regex.Pattern;
import org.apache.oro.text.regex.PatternCompiler;
import org.apache.oro.text.regex.PatternMatcher;
import org.apache.oro.text.regex.Perl5Compiler;
import org.apache.oro.text.regex.Perl5Matcher;

public class SplitTest {

public static void main( String[] args ) throws MalformedPatternException{
String ip = "192.168.0.1";
PatternCompiler pc = new Perl5Compiler();
PatternMatcher pm = new Perl5Matcher();
Pattern pattern = pc
.compile("([0-9]{1,3})\\.([0-9]{1,3})\\.([0-9]{1,3})\\.([0-9]{1,3})");
pm.contains(ip, pattern);
MatchResult mr = pm.getMatch();
int ip0 = Integer.parseInt(mr.group(1));
int ip1 = Integer.parseInt(mr.group(2));
int ip2 = Integer.parseInt(mr.group(3));
int ip3 = Integer.parseInt(mr.group(4));
System.out.println(ip0+" "+ip1+" "+ip2+" "+ip3);
}
}


类似的代码，用perl写，2行搞定