- /**
- * @author SunChong
- */
- public class IpUtil {
- /**
- * 将字符串型ip转成int型ip
- * @param strIp
- * @return
- */
- public static int Ip2Int(String strIp){
- String[] ss = strIp.split("\\\\.");
- if(ss.length != 4){
- return 0;
- }
- byte[] bytes = new byte[ss.length];
- for(int i = 0; i < bytes.length; i++){
- bytes[i] = (byte) Integer.parseInt(ss[i]);
- }
- return byte2Int(bytes);
- }
- /**
- * 将int型ip转成String型ip
- * @param intIp
- * @return
- */
- public static String int2Ip(int intIp){
- byte[] bytes = int2byte(intIp);
- StringBuilder sb = new StringBuilder();
- for(int i = 0; i < 4; i++){
- sb.append(bytes[i] & 0xFF);
- if(i < 3){
- sb.append(".");
- }
- }
- return sb.toString();
- }
- private static byte[] int2byte(int i) {
- byte[] bytes = new byte[4];
- bytes[0] = (byte) (0xff & i);
- bytes[1] = (byte) ((0xff00 & i) >> 8);
- bytes[2] = (byte) ((0xff0000 & i) >> 16);
- bytes[3] = (byte) ((0xff000000 & i) >> 24);
- return bytes;
- }
- private static int byte2Int(byte[] bytes) {
- int n = bytes[0] & 0xFF;
- n |= ((bytes[1] << 8) & 0xFF00);
- n |= ((bytes[2] << 16) & 0xFF0000);
- n |= ((bytes[3] << 24) & 0xFF000000);
- return n;
- }
- public static void main(String[] args) {
- String ip1 = "192.168.0.1";
- int intIp = Ip2Int(ip1);
- String ip2 = int2Ip(intIp);
- System.out.println(ip2.equals(ip1));
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/181220138124.html
来源: http://www.codesnippet.cn/detail/181220138124.html