private static <T extends Model> String getLoginKey(T user, String ip, String user_agent) {
        return encrypt(String.valueOf(user.getNumber(StringPool.PK_COLUMN)) + '|'
                + user.getStr("password") + '|' + ip + '|' + ((user_agent == null) ? 0
                : user_agent.hashCode()) + '|' + System.currentTimeMillis());
    }
private static <T extends Model> String getLoginKey(T user, String ip, String user_agent) {
        return encrypt(String.valueOf(user.getNumber(StringPool.PK_COLUMN)) + '|'
                + user.getStr("password") + '|' + ip + '|' + ((user_agent == null) ? 0
                : user_agent.hashCode()) + '|' + System.currentTimeMillis());
    }
private static < T extends Model > String getLoginKey ( T user , String ip , String user_agent ) { return encrypt ( String . valueOf ( user . getNumber ( StringPool . PK_COLUMN ) ) + ' ' + user . getStr ( "password" ) + ' ' + ip + ' ' + ( ( user_agent == null ) ? 0 : user_agent . hashCode ( ) ) + ' ' + System . currentTimeMillis ( ) ) ; }
Generating system user login ID string.

@param user       The user has logged on.
@param ip         The login ip.
@param user_agent http agent.
@return User login identification string
Generating system user login ID string .