- package test;
- import Java.security.MessageDigest;
- /**
- * <p>Title: </p>
- * <p>Description: </p>
- * <p>Copyright: Copyright (c) 2003</p>
- * <p>Company: </p>
- * @author unascribed
- * @version 1.0
- */
- public class StringUtil {
- private final static String[] hexDigits = {
- "0", "1", "2", "3", "4", "5", "6", "7",
- "8", "9", "a", "b", "c", "d", "e", "f"};
- /**
- * 转换字节数组为16进制字串
- * @param b 字节数组
- * @return 16进制字串
- */
- public static String byteArrayToHexString(byte[] b) {
- StringBuffer resultSb = new StringBuffer();
- for (int i = 0; i < b.length; i ) {
- resultSb.append(byteToHexString(b[i]));
- }
- return resultSb.toString();
- }
- private static String byteToHexString(byte b) {
- int n = b;
- if (n < 0)
- n = 256 n;
- int d1 = n / 16;
- int d2 = n % 16;
- return hexDigits[d1] hexDigits[d2];
- }
- public static String MD5Encode(String origin) {
- String resultString = null;
- try {
- resultString=new String(origin);
- MessageDigest md = MessageDigest.getInstance("MD5");
- resultString=byteArrayToHexString(md.digest(resultString.getBytes()));
- }
- catch (Exception ex) {
- }
- return resultString;
- }
- public static void main(String[] args){
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