java - Can't access managed bean again... jsf -
i'm not sure doing wrong. had same problem project of mine not access managed beans.
here facelet client:
<?xml version='1.0' encoding='utf-8' ?> <!doctype composition public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <ui:composition xmlns:ui="http://xmlns.jcp.org/jsf/facelets" xmlns:h="http://xmlns.jcp.org/jsf/html" xmlns:p="http://xmlns.jcp.org/jsf/passthrough" xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns="http://www.w3.org/1999/xhtml" template="./template.xhtml" xmlns:f="http://xmlns.jcp.org/jsf/core"> <ui:define name="left"> <h:form> <h:inputtextarea value="#{blogmanager.blogentity.text}" p:placeholder="tweet max 30 chars." style="width: 100%; height:150px; resize: none;" /><br/><br/> <h:commandbutton value="tweet" action="#{blogmanager.save}" /> </h:form> </ui:define> <ui:define name="right"> <c:foreach items="#{blogmanager.blogs()}" var="item"> <h:outputtext value="#{blogmanager.item.text}" /> likes: <h:outputtext value="" /> <h:commandlink action="" value="like"> <f:param name="tweetid" value="" /> <f:param name="username" value="" /> </h:commandlink> <br /> <textarea> <h:outputtext value="" /> </textarea> </c:foreach> </ui:define> this managed bean:
@named("blogmanager") @sessionscoped public class blogmanager implements serializable { private blog blogentity; @ejb private blogfacade blogfacade; @postconstruct public void init(){ blogentity = new blog(); } public blog getblogentity(){ return this.blogentity; } public void setblogentity(blog blogentity){ this.blogentity = blogentity; } public void save(){ blogfacade.create(blogentity); } public void delete(){ blogfacade.remove(blogentity); } public void deleteblog(@queryparam("blogid") int id){ blogfacade.deleteblog(id); } public list<blog> getblogs(){ return blogfacade.getblogs(); } } when trying use commandbutton "tweet" message: /index.xhtml @13,156 value="#{blogmanager.blogentity.text}": target unreachable, identifier 'blogmanager' resolved null
what doing wrong? ide netbeans recognizes managedbean in facelet , suggests message bean specific methods , entities.
stack trace:
javax.el.propertynotfoundexception: /index.xhtml @13,156 value="#{blogmanager.blogentity.text}": target unreachable, identifier 'blogmanager' resolved null @ com.sun.faces.facelets.el.tagvalueexpression.gettype(tagvalueexpression.java:100) @ 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.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.standardwrapper.service(standardwrapper.java:1682) @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:318) @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:160) @ org.apache.catalina.core.standardpipeline.doinvoke(standardpipeline.java:734) @ org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:673) @ com.sun.enterprise.web.webpipeline.invoke(webpipeline.java:99) @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:174) @ org.apache.catalina.connector.coyoteadapter.doservice(coyoteadapter.java:357) @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:260) @ com.sun.enterprise.v3.services.impl.containermapper.service(containermapper.java:188) @ org.glassfish.grizzly.http.server.httphandler.runservice(httphandler.java:191) @ org.glassfish.grizzly.http.server.httphandler.dohandle(httphandler.java:168) @ org.glassfish.grizzly.http.server.httpserverfilter.handleread(httpserverfilter.java:189) @ org.glassfish.grizzly.filterchain.executorresolver$9.execute(executorresolver.java:119) @ org.glassfish.grizzly.filterchain.defaultfilterchain.executefilter(defaultfilterchain.java:288) @ org.glassfish.grizzly.filterchain.defaultfilterchain.executechainpart(defaultfilterchain.java:206) @ org.glassfish.grizzly.filterchain.defaultfilterchain.execute(defaultfilterchain.java:136) @ org.glassfish.grizzly.filterchain.defaultfilterchain.process(defaultfilterchain.java:114) @ org.glassfish.grizzly.processorexecutor.execute(processorexecutor.java:77) @ org.glassfish.grizzly.nio.transport.tcpniotransport.fireioevent(tcpniotransport.java:838) @ org.glassfish.grizzly.strategies.abstractiostrategy.fireioevent(abstractiostrategy.java:113) @ org.glassfish.grizzly.strategies.workerthreadiostrategy.run0(workerthreadiostrategy.java:115) @ org.glassfish.grizzly.strategies.workerthreadiostrategy.access$100(workerthreadiostrategy.java:55) @ org.glassfish.grizzly.strategies.workerthreadiostrategy$workerthreadrunnable.run(workerthreadiostrategy.java:135) @ org.glassfish.grizzly.threadpool.abstractthreadpool$worker.dowork(abstractthreadpool.java:564) @ org.glassfish.grizzly.threadpool.abstractthreadpool$worker.run(abstractthreadpool.java:544) @ java.lang.thread.run(thread.java:744) caused by: javax.el.propertynotfoundexception: target unreachable, identifier 'blogmanager' resolved null @ com.sun.el.parser.astvalue.gettarget(astvalue.java:174) @ com.sun.el.parser.astvalue.gettype(astvalue.java:86) @ com.sun.el.valueexpressionimpl.gettype(valueexpressionimpl.java:201) @ org.jboss.weld.el.weldvalueexpression.gettype(weldvalueexpression.java:93) @ com.sun.faces.facelets.el.tagvalueexpression.gettype(tagvalueexpression.java:98)
<h:outputtext value="#{blogmanager.item.text}" should
<h:outputtext value="#{item.text}" you should initialize new entity in bean's constructor, if doesn't need initialization value service.
edit : try changing
@named("blogmanager") to @named("blogmanager")
and in facelet, replace
<h:inputtextarea value="#{blogmanager.blogentity.text}" by
<h:inputtextarea value="#{blogmanager.blogentity.text}" > in java programming language, convention / standard way name objects use lower case letter first letter. i.e change blogentity blogentity. problem not related that, still it's thing stick standards.
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