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>${message.from}</td><td><pre>${message.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(HelperInfo.java:102) webprofe.webfw.view.runtime.expression.PropertyExpression.evaluateWithTarget(PropertyExpression.java:26) webprofe.webfw.view.runtime.expression.ExpressionWithTarget.evaluate(ExpressionWithTarget.java:30) webprofe.webfw.view.runtime.tree.ExpressionNode.invoke(ExpressionNode.java:19) webprofe.webfw.view.runtime.tree.Fragment.invoke(Fragment.java:50) webprofe.webfw.view.components.base.ForEachComponent.processCollection(ForEachComponent.java:120) webprofe.webfw.view.components.base.ForEachComponent.execute(ForEachComponent.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 Tomcat/6.0.13.--------------------------------------------------------------------------------Apache Tomcat/6.0.13
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