/** * ip地址转成整数. * @param ip * @return */ public static long ip2long(String ip) { String[] ips = ip.split("[.]"); long num = 16777216L*Long.parseLong(ips[0]) + 65536L*Long.parseLong(ips[1]) + 256*Long.parseLong(ips[2]) + Long.parseLong(ips[3]); return num; } /** * 整数转成ip地址. * @param ipLong * @return */ public static String long2ip(long ipLong) { //long ipLong = 1037591503; long mask[] = {0x000000FF,0x0000FF00,0x00FF0000,0xFF000000}; long num = 0; StringBuffer ipInfo = new StringBuffer(); for(int i=0;i<4;i++){ num = (ipLong & mask[i])>>(i*8); if(i>0) ipInfo.insert(0,"."); ipInfo.insert(0,Long.toString(num,10)); } return ipInfo.toString(); }
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转载自kent-mu.iteye.com/blog/2261357
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