ip 正则表达式 java_java匹配IP正则表达式

Leytton:网上好多错的，亲测留着备用

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();

}

}