Hi, julius You have 'LoginBean' instead of 'loginBean' (first letter capitalized) in your welcome.xhtml page.
Vladimir M. > hi, > > > i have used a simple eclipse jsf tutorial as a starting point and added a > ajax part to it. this is my first ajax project with eclipse/myfaces and > im a bit confused what is needed for a very basic project, the tutorials > on the net all seem to be outdated, incomplete or simply wrong. > > running the project for the first time in eclipse i get this: > > javax.servlet.ServletException: javax.el.PropertyNotFoundException: Target > Unreachable, identifier 'LoginBean' resolved to null > javax.faces.webapp.FacesServlet.service(FacesServlet.java:229) > > > stopping the server from eclipse and running the project again i get: > javax.servlet.ServletException: /login.xhtmlNo saved view state could be > found for the view identifier: /login.xhtml > javax.faces.webapp.FacesServlet.service(FacesServlet.java:213) > > ive started with this code: > http://help.eclipse.org/helios/index.jsp?topic=%2Forg.eclipse.jst.jsf.doc. > user%2Fhtml%2Fgettingstarted%2Ftutorial%2FJSFTools_tutorial_JSF20.html > > it worked, logging in with a random username/password did bring me to the > next page and displayed the username as expected. navifation is from > login.xhtml to welcome.xhtml. > > > now i added the ajax code on the welcome.xhtml page, for now i just want > to get something updated. in this case the number of chars that is > entered. > > > for the first error, this is my LoginBean.java: > /** > * LoginBean.java > * > */ > > package com.tutorial; > import javax.faces.event.AjaxBehaviorEvent; > > public class LoginBean > { > private String name; > private String password; > public int eventCount = 0; > > > public String getName () > { > return name; > } > > > public void setName (final String name) > { > this.name = name; > } > > > public String getPassword () > { > return password; > } > > > public void setPassword (final String password) > { > this.password = password; > } > > public void update (AjaxBehaviorEvent event) > { > eventCount++; > } > } > > > as you can see, nothing fancy. update() is the listener method for the > ajax update. > > > > login.xhtml > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" > "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";;> > > <html xmlns="http://www.w3.org/1999/xhtml";; > xmlns:ui="http://java.sun.com/jsf/facelets";; > xmlns:h="http://java.sun.com/jsf/html";; > xmlns:f="http://java.sun.com/jsf/core";;> > > <ui:composition template="/WEB-INF/templates/BasicTemplate.xhtml"> > <ui:define name="content"> > <h:form> > <h:panelGrid columns="2"> > <h:outputText value="Name"></h:outputText> > <h:inputText value="#{loginBean.name}"></h:inputText> > <h:outputText value="Password"></h:outputText> > <h:inputSecret > value="#{loginBean.password}"></h:inputSecret> </h:panelGrid> > <h:commandButton value="Login" > action="login"></h:commandButton> </h:form> > > </ui:define> > </ui:composition> > </html> > > > welcome.xhtml > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" > "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";;> > > <html xmlns="http://www.w3.org/1999/xhtml";; > xmlns:ui="http://java.sun.com/jsf/facelets";; > xmlns:h="http://java.sun.com/jsf/html";; > xmlns:f="http://java.sun.com/jsf/core";;> > > <ui:composition template="/WEB-INF/templates/BasicTemplate.xhtml"> > <ui:define name="content"> > <h:outputLabel value="Welcome #{LoginBean.name}" > for="outputText"/> <h:form> > <h:inputText id="myinput" value="#{LoginBean.name}"> > <f:ajax render="outtext" event="keyup" > listener="#{LoginBean.update}"/> </h:inputText> > > <h:outputText id="outtext" value="#{loginBean.eventCount}"/> > </h:form> > </ui:define> > </ui:composition> > </html> > > > for="outputText": outputText is non existing, someone from a german java > forum told me that it is needed even if it doesnt link anywhere. > > > > web.xml > <?xml version="1.0" encoding="UTF-8"?> > <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";; > xmlns="http://java.sun.com/xml/ns/javaee";; > xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd";; > xsi:schemaLocation="http://java.sun.com/xml/ns/javaee > http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd";; version="3.0"> > <display-name>webprojecttest</display-name> > <servlet> > <servlet-name>Faces Servlet</servlet-name> > <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> > <load-on-startup>1</load-on-startup> > </servlet> > <servlet-mapping> > <servlet-name>Faces Servlet</servlet-name> > <url-pattern>/faces/*</url-pattern> > </servlet-mapping> > <context-param> > > <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name> > <param-value>resources.application</param-value> > </context-param> > <context-param> > <description>State saving method: 'client' or 'server' (=default). See > JSF Specification 2.5.2</description> > <param-name>javax.faces.STATE_SAVING_METHOD</param-name> > <param-value>server</param-value> > </context-param> > <context-param> > <description> > This parameter tells MyFaces if javascript code should be allowed in > the rendered HTML output. > If javascript is allowed, command_link anchors will have javascript > code that submits the corresponding form. > If javascript is not allowed, the state saving info and nested > parameters will be added as url parameters. > Default is 'true'</description> > <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name> > <param-value>true</param-value> > </context-param> > <context-param> > <description> > If true, rendered HTML code will be formatted, so that it is > 'human-readable' i.e. additional line separators and whitespace will be > written, that do not influence the HTML code. > Default is 'true'</description> > <param-name>org.apache.myfaces.PRETTY_HTML</param-name> > <param-value>true</param-value> > </context-param> > <context-param> > <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name> > <param-value>false</param-value> > </context-param> > <context-param> > <description> > If true, a javascript function will be rendered that is able to > restore the former vertical scroll on every request. Convenient feature > if you have pages with long lists and you do not want the browser page to > always jump to the top if you trigger a link or button action that stays > on the same page. Default is 'false' > </description> > <param-name>org.apache.myfaces.AUTO_SCROLL</param-name> > <param-value>true</param-value> > </context-param> > <context-param> > <param-name>org.apache.myfaces.USE_ENCRYPTION</param-name> > <param-value>false</param-value> > </context-param> > <listener> > > <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</ > listener-class> </listener> > </web-app> > > > ive read: > http://wiki.apache.org/myfaces/Secure_Your_Application > and disabled encryption for testing, but the error is still there. > any idea what might be wrong?
