PropertyNotFoundException in JSF 2.2

Question

I am trying to make a simple JSF projects but getting errors along the way... I updated my project as a maven project but still it does not work.

    <project xmlns="http://maven.apache.org/POM/4.0.0" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven- 
   4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>BeatifulThingsWebapp</groupId>
   <artifactId>BeatifulThingsWebapp</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <packaging>war</packaging>
   <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.1</version>
        <configuration>
          <release>16</release>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.2.3</version>
      </plugin>
    </plugins>
   </build>
   <dependencies>
    <!-- https://mvnrepository.com/artifact/com.sun.faces/jsf-impl -->
    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-impl</artifactId>
        <version>2.2.20</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.sun.faces/jsf-api -->
    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-api</artifactId>
        <version>2.2.20</version>
    </dependency>
   </dependencies>
   <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
   </properties>
   </project>

this is my index.xhtml

    <?xml version="1.0" encoding="ISO-8859-1" ?>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets">

    <body>
    <h1>Please fill out the form</h1>
    
    <h:form>
    Tell me about something nice:
    <h:inputText value="#{bt.thingTitle}"/>
    
    Now describe it:
    <h:inputText value="#{bt.thingDescription}"/>
    
    Rate this item:
    <h:inputText value="#{bt.rating}"/>
    
    <h:commandButton action="#{controller.onSubmitEdit()}" value="OK"/>
    
    </h:form>
    </body>
    </html>

java classes

    package beans;

    import java.io.Serializable;

    import javax.faces.bean.ManagedBean;
    import javax.faces.view.ViewScoped;

    @ManagedBean(name="bt")
    @ViewScoped
    public class BeautifulThing implements Serializable{
    
    int id;
    String thingTitle;
    String thingDescription;
    int rating;
    
    //ManagedBean has to have a non argument constructor
    

    public BeautifulThing(int id, String thingTitle, String thingDescription, int rating) {
        super();
        this.id = id;
        this.thingTitle = thingTitle;
        this.thingDescription = thingDescription;
        this.rating = rating;
    }
    
    public BeautifulThing() {
        
    }

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getThingTitle() {
        return thingTitle;
    }
    public void setThingTitle(String thingTitle) {
        this.thingTitle = thingTitle;
    }
    public String getThingDescription() {
        return thingDescription;
    }
    public void setThingDescription(String thingDescription) {
        this.thingDescription = thingDescription;
    }
    public int getRating() {
        return rating;
    }
    public void setRating(int rating) {
        this.rating = rating;
    }

    @Override
    public String toString() {
        return "BeautifulThing [id=" + id + ", thingTitle=" + thingTitle + ", rating=" + 
    rating + "]";
        }       
    }

--------------------

    package controllers;

    import java.io.Serializable;

    import javax.faces.bean.ManagedBean;

    @ManagedBean(name="controller")
    public class FormController implements Serializable{
    
    //ManagedBean has to have a non argument constructor
    

    public void onSubmitEdit() {
        //when the user clicks on the submit button
        System.out.println("You clicked the OK button");
    }

    public FormController() {
        super();
        // TODO Auto-generated constructor stub
        }
    }

the error I am getting:
HTTP Status 500 – Internal Server Error

--------------------------------------------------------------------------------

Type Exception Report

Message /index.xhtml @13,41 value="#{bt.thingTitle}": Target Unreachable, identifier [bt] 
resolved to null

Description The server encountered an unexpected condition that prevented it from 
fulfilling 
the request.

Exception

javax.servlet.ServletException: /index.xhtml @13,41 value="#{bt.thingTitle}": Target 
Unreachable, identifier [bt] resolved to null
javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Root Cause

javax.el.PropertyNotFoundException: /index.xhtml @13,41 value="#{bt.thingTitle}": Target 
Unreachable, identifier [bt] resolved to null
com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:100)
com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInpu 
tRenderer.java:95)
javax.faces.component.UIInput.getConvertedValue(UIInput.java:1067)
javax.faces.component.UIInput.validate(UIInput.java:981)
javax.faces.component.UIInput.executeValidate(UIInput.java:1270)
javax.faces.component.UIInput.processValidators(UIInput.java:714)
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:658)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Root Cause

javax.el.PropertyNotFoundException: Target Unreachable, identifier [bt] resolved to null
org.apache.el.parser.AstValue.getTarget(AstValue.java:73)
org.apache.el.parser.AstValue.getType(AstValue.java:57)
org.apache.el.ValueExpressionImpl.getType(ValueExpressionImpl.java:173)
com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:98)
com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInpu 
tRenderer.java:95)
javax.faces.component.UIInput.getConvertedValue(UIInput.java:1067)
javax.faces.component.UIInput.validate(UIInput.java:981)
javax.faces.component.UIInput.executeValidate(UIInput.java:1270)
javax.faces.component.UIInput.processValidators(UIInput.java:714)
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:658)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Note The full stack trace of the root cause is available in the server logs.


--------------------------------------------------------------------------------

Apache Tomcat/9.0.50

score 0 · Answer 1 · answered Jul 23 '21 at 20:31

0

Your JSF container dont create your BeautifulThing bean and therefore jsf servler dont find it.

Try change @MangedBean("bt") to @Named("bt") or delete constructor with arguments. (And totaly delete super(); because your bean don't extend any other object).

If no one from this will be work, look to logs of your application server from start or deploy war.

answered Jul 23 '21 at 20:31

Cheatr01

51
5

I tried those but none of them worked. I ran a maven test and it was build unsuccessful, it looks like "maven does not see my .java files". – Andrew Pennre Jul 24 '21 at 14:12
this is a nightmare really, I got it worked twice, now it is throwing the same error again – Andrew Pennre Jul 24 '21 at 21:01
Is in logs something usefull about inicialization of this bean? – Cheatr01 Jul 25 '21 at 13:35

PropertyNotFoundException in JSF 2.2

1 Answers1