jsf - Target Unreachable, identifier 'nameWrapper' resolved to null] with root cause javax.el.PropertyNotFoundException -



jsf - Target Unreachable, identifier 'nameWrapper' resolved to null] with root cause javax.el.PropertyNotFoundException -

i'm new jsf , when checked code i'm alwayes exeption:

blockquote org.apache.catalina.core.standardwrappervalve invoke severe: servlet.service() servlet [faces servlet] in context path [/sampleapplication] threw exception [/login.xhtml @11,69 value="#{namewrapper.name}": target unreachable, identifier 'namewrapper' resolved null] root cause javax.el.propertynotfoundexception: target unreachable, identifier 'namewrapper' resolved null @ org.apache.el.parser.astvalue.gettarget(astvalue.java:98) @ org.apache.el.parser.astvalue.gettype(astvalue.java:82) @ org.apache.el.valueexpressionimpl.gettype(valueexpressionimpl.java:172) @ com.sun.faces.facelets.el.tagvalueexpression.gettype(tagvalueexpression.java:98) @ com.sun.faces.renderkit.html_basic.htmlbasicinputrenderer.getconvertedvalue(htmlbasicinputrenderer.java:95) @ javax.faces.component.uiinput.getconvertedvalue(uiinput.java:1046) @ javax.faces.component.uiinput.validate(uiinput.java:976) @ javax.faces.component.uiinput.executevalidate(uiinput.java:1249) @ javax.faces.component.uiinput.processvalidators(uiinput.java:712) @ javax.faces.component.uiform.processvalidators(uiform.java:253) @ javax.faces.component.uicomponentbase.processvalidators(uicomponentbase.java:1261) @ javax.faces.component.uiviewroot.processvalidators(uiviewroot.java:1195) @ com.sun.faces.lifecycle.processvalidationsphase.execute(processvalidationsphase.java:76) @ com.sun.faces.lifecycle.phase.dophase(phase.java:101) @ com.sun.faces.lifecycle.lifecycleimpl.execute(lifecycleimpl.java:198) @ javax.faces.webapp.facesservlet.service(facesservlet.java:646) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:51) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:222) @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:123) @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:502) @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:171) @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:100) @ org.apache.catalina.valves.accesslogvalve.invoke(accesslogvalve.java:953) @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:118) @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:408) @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1041) @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:603) @ org.apache.tomcat.util.net.jioendpoint$socketprocessor.run(jioendpoint.java:312) @ java.util.concurrent.threadpoolexecutor.runworker(unknown source) @ java.util.concurrent.threadpoolexecutor$worker.run(unknown source) @ java.lang.thread.run(unknown source)

this code:

<h:form> name: <h:inputtext id="text1" value="#{namewrapper.name}" /> <br /> address: <h:inputtext id="text2" value="#{namewrapper.address}" /> <br /> zip: <h:inputtext id="text3" value="#{namewrapper.zip}" /> <br /> <h:commandbutton id="submit" value="submit" action="pagetwo" /> </h:form>

and:

your password <h:outputtext id="outtext" value="#{namewrapper.outtext}" />!

and:

import javax.faces.bean.managedbean; import javax.faces.bean.sessionscoped; @managedbean @sessionscoped public class namewrapper { private string name; private string address; private string zip; @suppresswarnings("unused") private string outtext; public string getname() { homecoming name; } public void setname(string name) { this.name = name; } public string getaddress() { homecoming address; } public void setaddress(string address) { this.address = address; } public string getzip() { homecoming zip; } public void setzip(string zip) { this.zip = zip; } public string getouttext() { homecoming name + zip + address; } public void setouttext(string outtext) { this.outtext = outtext; } }

i followed answers exception, , still didn't succeed solved tanks!

you must utilize jsf standard tags(h:head, h:body), give illustration below, , implements serializable in managedbean.

xhtml

<?xml version="1.0" encoding="utf-8"?> <!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:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html"> <h:head> <title>test</title> </h:head> <h:body> <h:form> name: <h:inputtext id="text1" value="#{namewrapper.name}" /> <br /> address: <h:inputtext id="text2" value="#{namewrapper.address}" /> <br /> zip: <h:inputtext id="text3" value="#{namewrapper.zip}" /> <br /> <h:commandbutton id="submit" value="submit" action="pagetwo" /> </h:form> </h:body> </html>

managedbean

import java.io.serializable; import javax.faces.bean.managedbean; import javax.faces.bean.sessionscoped; @managedbean(name = "namewrapper") @sessionscoped public class namewrapper implements serializable{ private string name; private string address; private string zip; @suppresswarnings("unused") private string outtext; public string getname() { homecoming name; } public void setname(string name) { this.name = name; } public string getaddress() { homecoming address; } public void setaddress(string address) { this.address = address; } public string getzip() { homecoming zip; } public void setzip(string zip) { this.zip = zip; } public string getouttext() { homecoming name + zip + address; } public void setouttext(string outtext) { this.outtext = outtext; } }

xhtml of pagetwo

<?xml version="1.0" encoding="utf-8"?> <!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:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html"> <h:head> <title>pagetwo</title> </h:head> <h:body> pagetwo </h:body> </html>

jsf managed-bean

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