用MD5做散列函数的新Base64算法

吃完晚饭没事，随便写了点东西，没想到弄巧成拙，写出来一堆代码，仁者见仁智者见智。大家拿去用吧，o(∩_∩)o 哈哈~

[code] public class WL { private int base = 63; private String base64 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_";

public String getWL(String url) { String hex = MD5.getMD5(url.getBytes()); int hexLen = hex.length(); int subHexLen = hexLen / 8; StringBuffer result = new StringBuffer(); for (int i = 0; i < subHexLen; ++i) { String subHex = hex.substring(8 * i, 8 * i + 7); Long num = 0x3FFFFFFF & Long.parseLong(subHex, 16); for (int j = 0; j < 5; ++j) { Long val = 0x0000003F & num; result.append(base64.charAt(val.intValue())); num = num >> 6; } result.append("|"); } return result.toString().substring(0, 23); }

public static void main(String[] args) { WL wl = new WL(); System.out.println(wl.getWL("http://www.im47.net/")); } } [/code]