常用工具类

1.MD5加密

public static String MD5(String data) {
    try {
        java.security.MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] array = md.digest(data.getBytes("UTF-8"));
        StringBuilder sb = new StringBuilder();
        for (byte item : array) {
            sb.append(Integer.toHexString((item & 0xFF) | 0x100).substring(1, 3));
        }
        return sb.toString().toUpperCase();
    } catch (Exception exception) {
    }
    return null;
}

常用工具类

原文：https://www.cnblogs.com/Gen2021/p/14668920.html