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Java > Open Source Codes > dlog4j > security > IsLoginTag


1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 2 of the License, or
5  * (at your option) any later version.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU Library General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * along with this program; if not, write to the Free Software
14  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15  */
16 package dlog4j.security;
17
18 import javax.servlet.http.HttpServletRequest JavaDoc;
19 import javax.servlet.jsp.JspException JavaDoc;
20 import javax.servlet.jsp.tagext.TagSupport JavaDoc;
21
22 import dlog4j.formbean.UserForm;
23
24 /**
25  * ÅжÏÓû§ÊÇ·ñµÇ½
26  * <xxx:isLogin/>
27  * @author Winter Lau
28  */
29 public class IsLoginTag extends TagSupport JavaDoc {
30
31     public int doStartTag() throws JspException JavaDoc {
32         UserForm user = UserForm.getLoginUser((HttpServletRequest JavaDoc)pageContext.getRequest());
33         return (user==null)?SKIP_BODY:EVAL_BODY_INCLUDE;
34     }
35 }
36
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