java匹配IP正则表达式

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class IsIp {

public static void main(String[] args) {
System.out.println(isboolIp(""));
System.out.println(isboolIp("192.168.1.1"));
System.out.println(isboolIp("256.2.3.4"));
System.out.println(isboolIp("1.2.3.4"));
System.out.println(isboolIp("1.2.3.4.5"));
System.out.println(isboolIp("1.2.3.4."));
}

/** * 判断是否为合法IP * @return the ip */
public static boolean isboolIp(String ipAddress) {
String ip = "([1-9]|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3}";
Pattern pattern = Pattern.compile(ip);
Matcher matcher = pattern.matcher(ipAddress);
return matcher.matches();
}
}