9:42 p.m.
Hi, I have a strange null pointer exception when trying to implement the Remember Me
functionality.
It seems to be a null pointer exception in
org.jboss.seam.core.Selector.setCookieValue(Selector:77). I've looked at the code and
it appears that the response object is null which to me is strange.
Below is the method in Seam that is "causing" the problem.
I'm using Seam 1.2 patched and IceFaces 1.5.3
| /**
| * Set the cookie
| */
| protected void setCookieValue(String value)
| {
| if ( isCookieEnabled() )
| {
| HttpServletResponse response = (HttpServletResponse)
FacesContext.getCurrentInstance().getExternalContext().getResponse();
| Cookie cookie = new Cookie( getCookieName(), value );
| cookie.setMaxAge( getCookieMaxAge() );
| response.addCookie(cookie); /* NPE IS RIGHT HERE */
| }
| }
|
I have no idea why the response would be null at this point in time. My login works fine
and authenticates correctly. Only dumps if I have the remember me check box selected.
For completeness I'll list the full stack trace here:
| 22:21:11,867 ERROR [[Blocking Servlet]] Servlet.service() for servlet Blocking Servlet
threw exception
| javax.faces.FacesException: Error calling action method of component with id
_id32:_id56
| at
org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
| at javax.faces.component.UICommand.broadcast(UICommand.java:106)
| at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
| at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
| at
org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
| at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
| at
com.icesoft.faces.webapp.xmlhttp.BlockingServlet.renderCycle(BlockingServlet.java:438)
| at
com.icesoft.faces.webapp.xmlhttp.BlockingServlet.receiveUpdates(BlockingServlet.java:426)
| at
com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:279)
| at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
| at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at
org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
| at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:595)
| Caused by: javax.faces.el.EvaluationException: /login.xhtml @59,93
action="#{identity.login}": java.lang.NullPointerException
| at
com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
| at
org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
| ... 29 more
| Caused by: java.lang.NullPointerException
| at org.jboss.seam.core.Selector.setCookieValue(Selector.java:77)
| at org.jboss.seam.security.Identity.postAuthenticate(Identity.java:284)
| at
org.jboss.seam.security.RuleBasedIdentity.postAuthenticate(RuleBasedIdentity.java:70)
| at org.jboss.seam.security.Identity.authenticate(Identity.java:250)
| at org.jboss.seam.security.Identity.authenticate(Identity.java:242)
| at org.jboss.seam.security.Identity.login(Identity.java:172)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at com.sun.el.parser.AstValue.invoke(AstValue.java:151)
| at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
| at
com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
| at
com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:69)
| ... 30 more
|
And here is my login form:
| <h:form>
|
| <div class="dialog">
| <div class="entry">
| <div class="label">
| <h:outputText value="#{messages['login.name']}" />
| </div>
| <div class="input">
| <h:inputText id="username"
value="#{identity.username}"/>
| </div>
| </div>
| <div class="entry">
| <div class="label">
| <h:outputText value="#{messages['login.password']}" />
| </div>
| <div class="input">
| <h:inputSecret id="password"
value="#{identity.password}"/>
| </div>
| </div>
| <div class="entry">
| <div class="label">
| <h:outputText
value="#{messages['login.rememberMe']}" />
| </div>
| <div class="input">
| <h:selectBooleanCheckbox id="rememberMe"
value="#{identity.rememberMe}"/>
| </div>
| </div>
| <div class="entry">
| <div>
| <h:graphicImage
value="/seam/resource/captcha?#{captcha.id}"/>
| </div>
| <div class="label">
| <h:outputLabel for="verifyCaptcha">Enter the above
letters</h:outputLabel>
| </div>
| <div class="input">
| <h:inputText id="verifyCaptcha"
value="#{captcha.response}" required="true"/>
| </div>
| <div class="errors"><h:message
for="verifyCaptcha"/></div>
| </div>
| </div>
|
| <div class="actionButtons">
| <h:commandButton value="#{messages['login.login']}"
action="#{identity.login}"/>
| </div>
|
| <div class="actionButtons">
| <s:link view="/registerUser.xhtml"
value="#{messages['registerUser.new']}" />
| </div>
|
| </h:form>
|
Any help is greatly appreciated,
PVM
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