根据字符串生成MD5

1

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class MD5 {

    // MD5変換

    public static String Md5(String str) {

        if (str != null && !str.equals("")) {

            try {

                MessageDigest md5 = MessageDigest.getInstance("MD5");

                char[] HEX = { ‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘, ‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘, ‘f‘ };

                byte[] md5Byte = md5.digest(str.getBytes("UTF8"));

                StringBuffer sb = new StringBuffer();

                for (int i = 0; i < md5Byte.length; i++) {

                    sb.append(HEX[(int) (md5Byte[i] & 0xff) / 16]);

                    sb.append(HEX[(int) (md5Byte[i] & 0xff) % 16]);

                }

                str = sb.toString();

            } catch (NoSuchAlgorithmException e) {

            } catch (Exception e) {

            }

        }

        return str;

    }
}

Done

根据字符串生成MD5,布布扣,bubuko.com