private static final String hexDigits[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"}; /** * 1.加密加盐调用的方法 * @param jmContent 加密内容 * @param jyContent 加盐内容 * */ public static String MD5EncodeUtf8(String jmContent,String jyContent) { jmContent = jmContent + jyContent; return MD5Encode(jmContent, "utf-8"); } //2.这里主要是遍历8个byte，转化为16位进制的字符，即0-F private 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(); } //3.这里是针对单个byte，256的byte通过16拆分为d1和d2 private static String byteToHexString(byte b) { int n = b; if (n < 0) n += 256; int d1 = n / 16; int d2 = n % 16; return hexDigits[d1] + hexDigits[d2]; } /** * 4.返回大写MD5 * @param origin * @param charsetname * @return */ private static String MD5Encode(String origin, String charsetname) { String resultString = null; try { resultString = new String(origin); MessageDigest md = MessageDigest.getInstance("MD5"); if (charsetname == null || "".equals(charsetname)) resultString = byteArrayToHexString(md.digest(resultString.getBytes())); else resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname))); } catch (Exception exception) { } return resultString; }
例如：
加密数据：jyr666
加盐数据：123456
调用：MD5EncodeUtf8( jyr666 , 123456 )