boolean commandUSER()
	    {
	        if(cmd.equals("USER"))
	        {
	            reply = "331 用户名正确,需要口令";
	            user = param;
	              state = FtpState.FS_WAIT_PASS;
	            return false;
	        }
	        else
	        {
	            reply = "501 参数语法错误,用户名不匹配";
	            return true;
	        }

	    }