IP转换为整型

来源：互联网发布：abb机器人编程入门编辑：程序博客网时间：2024/05/15 12:15
import javax.servlet.http.HttpServletRequest;/** * IP转换为整形 */public class IpConvert {/** * 获取客户端浏览器的ip地址 */public static String getIpAddr(HttpServletRequest request) {String ip = request.getHeader("x-forwarded-for");if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("Proxy-Client-IP");}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("WL-Proxy-Client-IP");}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getRemoteAddr();}if (ip != null && ip.indexOf(":") >= 0) { // 判断是否为IPV6地址ip = "127.0.0.1";}return ip;}// 將IP地址转换成10进制整数public static Integer IpToLong(String strIp) {long[] ip = new long[4];// 先找到IP地址字符串中.的位置int position1 = strIp.indexOf(".");int position2 = strIp.indexOf(".", position1 + 1);int position3 = strIp.indexOf(".", position2 + 1);// 将每个.之间的字符串转换成整型ip[0] = Integer.parseInt(strIp.substring(0, position1));ip[1] = Integer.parseInt(strIp.substring(position1 + 1, position2));ip[2] = Integer.parseInt(strIp.substring(position2 + 1, position3));ip[3] = Integer.parseInt(strIp.substring(position3 + 1));return (int) ((ip[0] << 24) + (ip[1] << 16) + (ip[2] << 8) + ip[3]);}// 将十进制整数形式转换成127.0.0.1形式的ip地址public static String LongToIP(Integer longIp) {StringBuffer sb = new StringBuffer("");// 直接右移24位sb.append(String.valueOf((longIp >>> 24)));sb.append(".");// 将高8位置0，然后右移16位sb.append(String.valueOf((longIp & 0x00FFFFFF) >>> 16));sb.append(".");// 将高16位置0，然后右移8位sb.append(String.valueOf((longIp & 0x0000FFFF) >>> 8));sb.append(".");// 将高24位置0sb.append(String.valueOf((longIp & 0x000000FF)));return sb.toString();}/** * 测试 * @param args     */public static void main(String[] args) {Integer ip=IpToLong("127.0.0.1");System.out.println(ip);System.out.println(LongToIP(ip));}}
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