on line 10 I have
if(!ses.get("context").equals(null)&&!ses.get("role").equals(null)){
if(!ses.get("context").toString().isEmpty()&&!ses.get("role").toString().isEmpty()){
thanks for your considering
2009/11/30 Saeed Iqbal <saee...@gmail.com>
> Whats on line 10
>
> On Monday, November 30, 2009, Nguyen Xuan Son
> <nr000...@ed.ritsumei.ac.jp> wrote:
> > dear all
> > I have the C0002_Home.jsp and sessionChk.jsp files. The C0002_Home.jsp's
> > source code is
> > <s:action name="SessionCheck"></s:action>
> >
> > the meaning of this source code is to check users session whenever they
> > enter the webpage
> > the struts.xml is structured as:
> > <action name="SessionCheck" class="com.baibai.action.SessionCheckAction">
> > <result name="input">sessionChk.jsp</result>
> > </action>
> > <action name="C0002_Home" class="com.baibai.action.C0002_HomeAction">
> > <result name="input">C0002_Home.jsp</result>
> > </action>
> >
> > the detail of the SessionCheckAction.java file is
> > public class SessionCheckAction extends ActionSupport{
> > public String execute() throws Exception {
> > Map ses = ActionContext.getContext().getSession();
> >
> if((ses.get("context").toString()!="")&&(ses.get("role").toString()=="admin")){
> > // the user is loginned as an administrator
> > System.out.println("you have session");
> > } else {
> > System.out.println("you dont have session");
> > }
> > return SUCCESS;
> > }
> > }
> >
> > however when i tried to enter the C0002_Home.jsp without Login
> > the error appears
> > 2009/11/30 10:40:07
> > com.opensymphony.xwork2.util.logging.commons.CommonsLogger error
> > 致命的: Could not execute action: /SessionCheck
> > java.lang.NullPointerException
> > at
> com.baibai.action.SessionCheckAction.execute(SessionCheckAction.java:10)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> > at java.lang.reflect.Method.invoke(Unknown Source)
> >
> > this doesnt happen if I login into the system
> > could you tell me where did I went wrong
> >
> > --
> > =======================================================================
> > Ritsumeikan University, Asia JinZai Project
> > Master of Information Science
> > Nguyen Xuan Son
> >
> > Add : Japan, Shiga-Ken, Kusatsu-Shi, Kasayama 3choume 1-18
> ShiteiHaimu
> > Rien, Room 103
> > Tel/Fax : 81-(0)90-3976 2246
> > Email : nr000...@ed.ritsumei.ac.jp
> > Mobile : 81-(0)90-3976 2246 URL : http://www.ritsumei.jp
> > =======================================================================
> >
>
> --
> Saeed Iqbal
> Independant Consultant (Freelance)
> Struts - J2EE - Application Architect / Developer
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscr...@struts.apache.org
> For additional commands, e-mail: user-h...@struts.apache.org
>
>
--
=======================================================================
Ritsumeikan University, Asia JinZai Project
Master of Information Science
Nguyen Xuan Son
Add : Japan, Shiga-Ken, Kusatsu-Shi, Kasayama 3choume 1-18 ShiteiHaimu
Rien, Room 103
Tel/Fax : 81-(0)90-3976 2246
Email : nr000...@ed.ritsumei.ac.jp
Mobile : 81-(0)90-3976 2246 URL : http://www.ritsumei.jp
=======================================================================
