If you could demonstrate for us
how does the very first page (index.jsp/index.html) of your webapp get
produced?
Take it step by step showing all the entries in web.xml, code for
controller, interactions of controller, how are the beans configured and
where is the code for the beans, how are you accessing beans via EL? which
library are you using for this purpose? and how the index.jsp/index.html is
presented to the client's browser?
M--
----- Original Message -----
From: "rameau rameau1982" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Wednesday, December 26, 2007 4:22 AM
Subject: RE: javax.servlet.ServletException
${request.session.getAttribute('message_srv')} works perfectly because if I
don't login when doing the:
<b:if test="${not srv}">
<h1>ERROR</h1>
<p><span style="color: #FF0000;">Session Error</span></p>
<hr color="#1E90FF"/>
<a HREF="index.html">Volver</a>
</b:if>
it is desplayed perfectly, so the first clause is working properly.
I'm not using JSP !!! I'm using a framework done by my teacher that is based
on struts but it's not the same. The parallellism would be that the bean of
a JSP is my MailMessageSession.java. In this class there are several methods
used in the mail.view page as properties and are set in LoginCommand.java:
request.getSession().setAttribute("message_srv", mms);
The view language can be compared to .jsp
Thanl's for any help
> Date: Mon, 24 Dec 2007 10:10:17 -0500> From: [EMAIL PROTECTED]> To:
users@tomcat.apache.org> Subject: Re: javax.servlet.ServletException> > I'm
looking at your original post on this problem and what I see is you > are
trying to do stuff against how the EL expression language works.> > Stuff
like ${request.session.getAttribute('message_srv') can't work. > Instead,
this expression should access attributes as if they were bean > properties
of the page, request, or session, e.g. > ${sessionScope.message_srv}. See
JSP.2 of the JSP 2.0 specification.> > Looking at ${srv.receivedMessages()},
I would expect you need something > more like:> > <b:set
var="recmess"><jsp:expression>pageContext.getAttribute( "srv"
> ).receivedMessages()</jsp:expressoin></b:set>> <b:if test="${not
recmess}">....</b:if>> > Overall, the EL expression language was designed
around the idea of > accessing information via JavaBean patterns and doesn't
work with > straight function calls like your are attempting. Use the >
jsp:expression tag to evaluate such things and store the result in a >
pageContext variable for later use.> > --David> > rameau rameau1982 wrote:>
> I've done this and the problem is still there ... I don't know what to
do...> >> >> > To: [EMAIL PROTECTED]: Re:
javax.servlet.ServletExceptionDate: Sun, 23 Dec 2007 19:28:06 -0500From:
[EMAIL PROTECTED]> >> >> >> > In that case you're dealing with a flawed
architecture as you have no input mechamismyour web.xml should contain at
least 1 welcome display file such as this input declaration in web.xml> >
<welcome-file-list> <welcome-file> Login.html </welcome-file>
</welcome-file-list>Good LuckM--> >> > ----- Original Message ----- > >
From: rameau rameau1982 > > To: [EMAIL PROTECTED] > > Sent: Sunday,
December 23, 2007 6:00 PM> > Subject: RE: javax.servlet.ServletException> >
I don't use jsp. I use html pages for static content and .view pages for
dynamic content.If you want to see the aplication you have to deploy a .war
archive in tomcatThe .view pages get data from a servletrequest (through the
framework, wich I don't have access to it), present static content and send
requests to the controller (detailed in the controller.xml) wich
interactuates with the model (MailMessageSession.java and all the DAO's
classes and JDBC)> >> >> > To: [EMAIL PROTECTED]: Re:
javax.servlet.ServletExceptionDate: Sun, 23 Dec 2007 17:28:23 -0500From:
[EMAIL PROTECTED]> >> >> > Hello Rameau> > I did'nt see any jsp's included
(for viewing the webapp)> > ?M--> >> > ----- Original Message ----- > >
From: rameau rameau1982 > > To: users@tomcat.apache.org > > Sent: Sunday,
December 23, 2007 4:57 PM> > Subject: javax.servlet.ServletException> > Hi
again, by a problem with hotmail I have only been sending messages with one
person. I'll put it all again with a rar that is all my project. Hi!I'm
studying at the university an assignature based on web applications
developement using java servlets, tomcat, Model-view-controller, and a
framework done by my teacher that is a simplification of struts (we use his
jar to implement all te classes of his framework and he has told us that
everything is correct and that we cannot modify his classes). He has
invented a language called VIEW.The dynamic pages terminate with the sufix
view What I'm doing is a web application that has some users(with
passwords) in a postgresql database (here everything correct) and that they
login and send/receive messages to/from the rest of the users.I'm also using
eclipse, so everything is well compilatedWhen a user logins, tomcat sends me
an exception and doesn't shows the main dynamic page where the logged user
views recieved messages and can send messages to other users.I give you the
code of the mail.view page: <?xml version='1.0'
encoding='ISO-8859-1'?><v:view
xmlns:v='http://soft0.upc.es:8080/web/NS/webfw/view' xmlns:b='/base.vlib'
component-element-prefixes='b'><HTML><HEAD> <TITLE>Disseny d'aplicacions
WEB: P3</TITLE> <LINk rel='stylesheet' href='styles.css'
type='text/css'/></HEAD><BODY><center><table width='700' border='0'
cellspacing='0' cellpadding='0'><tr><td><br/><b:set var='srv'
value='${request.session.getAttribute('message_srv')}'/><b:if test='${not
srv}'> <h1>ERROR</h1> <p><span style='color: #FF0000;'>Session
Error</span></p> <hr color='#1E90FF'/> <a
HREF='index.html'>Volver</a></b:if><b:if test='${srv}'>
<H1>${srv.userName}</H1> <hr color='#1E90FF'/><b:set var='recmess'
value='${srv.receivedMessages()}'/><b:if test='${not recmess}'> <H2>No hay
mensajes recibidos</H2></b:if><b:if test='${recmess}'> <H2>Mensajes
recibidos:</H2> <FORM METHOD='POST' ACTION='delete.do'> <!-- Lista de
mensajes --> <table border='2' style='border-color: #1E90FF' cellspacing='1'
align='center'> <tr> <td><font>remitente</font></td>
<td><font>mensaje</font></td> <td><font>fecha</font></td>
<td><font>eliminar</font></td> </tr><b:for-each var='message'
items='${srv.receivedMessages()}'><tr><td>${message.from}</td><td><pre>${mes
sage.text}</pre></td><td><pre>${message.date}</pre></td><td><input
type='checkbox' name='message_id'
value='${message.id}'/></td></tr></b:for-each> </table> <p><INPUT
TYPE='submit' NAME='delete' VALUE='Eliminar'/></p> </FORM></b:if> <hr
color='#1E90FF'/><FORM METHOD='POST'
ACTION='send.do'><font>Destinatario/s:</font><br/><select name='receiver'
multiple='multiple'><b:for-each var='user' items='${srv.userListToSend()}'>
<option
value='${user.name}'>${user.name}</option>'</b:for-each></select><br/><font>
Mensaje:</font> <p><TEXTAREA NAME='message' ROWS='10'
COLS='100'></TEXTAREA></p> <p><INPUT TYPE='submit' NAME='send'
VALUE='Enviar'/></p> </FORM> <hr color='#1E90FF'/> <FORM METHOD='POST'
ACTION='logout.do'> <p><INPUT TYPE='submit' VALUE='Logout'/></p>
</FORM></b:if></td></tr></table></center></BODY></HTML></v:view> I think
that the problem is at:<b:set var='srv'
value='${request.session.getAttribute('message_srv')}'/> can somebody help
me?? Oh! and the tomcat exception:Estado HTTP
500 - ----------------------------------------------------------------------
----------type Informe de Excepciónmensaje descripción El servidor encontró
un error interno () que hizo que no pudiera rellenar este
requerimiento.excepción javax.servlet.ServletException: Cannot execute view
page '/mail.view': webprofe.webfw.view.processor.ViewException: Error in
call to component: webprofe.webfw.view.processor.ViewException: Error in
call to component: webprofe.webfw.view.runtime.expression.EvalException:
Undefined property 'name' on target [EMAIL PROTECTED]
webprofe.webfw.view.http.ViewServlet.process(ViewServlet.java:63)
webprofe.webfw.view.http.ViewServlet.doPost(ViewServlet.java:108)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
webprofe.webfw.controller.RequestMap.dispatchView(RequestMap.java:134)
webprofe.webfw.controller.RequestMap.process(RequestMap.java:122)
webprofe.webfw.controller.Controller.process(Controller.java:57)
webprofe.webfw.controller.ControllerServlet.doPost(ControllerServlet.java:48
) javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)causa raíz
webprofe.webfw.view.processor.ViewException: Error in call to component:
webprofe.webfw.view.processor.ViewException: Error in call to component:
webprofe.webfw.view.runtime.expression.EvalException: Undefined property
'name' on target [EMAIL PROTECTED]
webprofe.webfw.view.runtime.tree.CallNode.invoke(CallNode.java:87)
webprofe.webfw.view.runtime.tree.Fragment.invoke(Fragment.java:50)
webprofe.webfw.view.runtime.tree.Page.execute(Page.java:56)
webprofe.webfw.view.http.ViewServlet.process(ViewServlet.java:61)
webprofe.webfw.view.http.ViewServlet.doPost(ViewServlet.java:108)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
webprofe.webfw.controller.RequestMap.dispatchView(RequestMap.java:134)
webprofe.webfw.controller.RequestMap.process(RequestMap.java:122)
webprofe.webfw.controller.Controller.process(Controller.java:57)
webprofe.webfw.controller.ControllerServlet.doPost(ControllerServlet.java:48
) javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.httpHttpServlet.service(HttpServlet.java:803)causa raíz
webprofe.webfw.view.processor.ViewException: Error in call to component:
webprofe.webfw.view.runtime.expression.EvalException: Undefined property
'name' on target [EMAIL PROTECTED]
webprofe.webfw.view.runtime.tree.CallNode.invoke(CallNode.java:87)
webprofe.webfw.view.runtime.tree.Fragment.invoke(Fragment.java:50)
webprofe.webfw.view.components.base.IfComponent.execute(IfComponent.java:18)
webprofe.webfw.view.runtime.tree.CallNode.invoke(CallNode.java:76)
webprofe.webfw.view.runtime.tree.Fragment.invoke(Fragment.java:50)
webprofe.webfwview.runtime.tree.Page.execute(Page.java:56)
webprofe.webfw.viewhttp.ViewServlet.process(ViewServlet.java:61)
webprofe.webfw.view.http.ViewServlet.doPost(ViewServlet.java:108)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.httpHttpServlet.service(HttpServlet.java:803)
webprofe.webfw.controller.RequestMap.dispatchView(RequestMap.java:134)
webprofe.webfwcontroller.RequestMap.process(RequestMap.java:122)
webprofe.webfw.controller.Controller.process(Controller.java:57)
webprofe.webfw.controller.ControllerServlet.doPost(ControllerServlet.java:48
) javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)causa raíz
webprofe.webfw.view.runtime.expression.EvalException: Undefined property
'name' on target [EMAIL PROTECTED]
webprofe.webfw.view.runtime.introspection.HelperInfo.getProperty(HelperInfo.
java:22)
webprofe.webfw.view.runtime.introspection.BeanHelperInfo.getProperty(HelperI
nfo.java:102)
webprofe.webfw.view.runtime.expression.PropertyExpression.evaluateWithTarget
(PropertyExpression.java:26)
webprofe.webfw.view.runtime.expression.ExpressionWithTarget.evaluate(Express
ionWithTarget.java:30)
webprofe.webfw.view.runtime.tree.ExpressionNode.invoke(ExpressionNode.java:1
9) webprofe.webfw.view.runtime.tree.Fragment.invoke(Fragment.java:50)
webprofe.webfw.view.components.base.ForEachComponent.processCollection(ForEa
chComponent.java:120)
webprofe.webfw.view.components.base.ForEachComponent.execute(ForEachComponen
t.java:61)
webprofe.webfw.view.runtime.tree.CallNode.invoke(CallNode.java:76)
webprofe.webfw.view.runtime.tree.Fragment.invoke(Fragmentjava:50)
webprofe.webfw.view.components.base.IfComponent.execute(IfComponent.java:18)
webprofe.webfw.view.runtime.tree.CallNodeinvoke(CallNode.java:76)
webprofe.webfw.view.runtime.tree.Fragment.invoke(Fragment.java:50)
webprofe.webfw.view.runtime.tree.Pageexecute(Page.java:56)
webprofe.webfw.view.http.ViewServlet.process(ViewServlet.java:61)
webprofe.webfw.view.http.ViewServlet.doPost(ViewServlet.java:108)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
webprofe.webfw.controller.RequestMap.dispatchView(RequestMap.java:134)
webprofe.webfw.controller.RequestMapprocess(RequestMap.java:122)
webprofe.webfw.controller.Controller.process(Controller.java:57)
webprofe.webfw.controller.ControllerServlet.doPost(ControllerServlet.java:48
) javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)nota La traza
completa de la causa de este error se encuentra en los archivos de diario de
Apache
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