MD5算法:
public static final char HEX_DIGITS[] = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e',
'f'
};
public static String getMD5(String text) {
String digest = "";
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(text.getBytes("utf-8"));
byte b[] = md.digest();
char str[] = new char[b.length * 2];
int k = 0;
for (int i = 0; i < b.length; i++) {
byte byte0 = b[i];
str[k++] = HEX_DIGITS[byte0 >>> LENGHT_4 & BYTEMASK_HIGH];
str[k++] = HEX_DIGITS[byte0 & BYTEMASK_HIGH];
}
digest = new String(str);
} catch (NoSuchAlgorithmException e) {
} catch (UnsupportedEncodingException e) {
}
return digest;
}
public static boolean isChinese(String text) {
boolean isChinese = false;
if (!TextUtils.isEmpty(text)) {
isChinese = true;
int length = text.length();
for (int i = 0; i < length; i++) {
char c = text.charAt(i);
if (c < '\u4e00' || c > '\u9fa5') {
isChinese = false;
break;
}
}
}
return isChinese;
}