velocity获取session值并判断是不是成

<div class="right_main_container">
	#if(!$!session.getAttribute("LogonPassport"))
		<a href="login.htm">登录</a>
	#else
		欢迎[$!session.getAttribute("LogonPassport").realName]进入首页
	#end
</div>

欢迎[安欣生活]进入首页loginId=[anxin], webVerifyCode=[null], status=[0], remark=[null], createdTime=[145959], loginVerifyCode=[null], repeatPassword=[null], errorMsg=[null], password=[null], id=[1], currentLoginIp=[null], loginErrorTimes=[0], errorCode=[null], merchantName=[安欣生活], realName=[安欣生活], merchantId=[123456789012345], createdDate=[20130311], qq=[null], mobile=[15800005555]