JSF Datatable does not show all List fields(columns)

Question

I want to display a table in JSF:DataTAble. I successfully retrived table from database to List of users type where "users" is my pojo class. Now I am having problem with displaying it on data table some of the columns like FName, LName, Pwd, displayed correctly but when i add other coulmns like "Note" "Email" it gives me this error

javax.servlet.ServletException: /dt.xhtml: Property 'Email' not found on type in.ali.pojo.users
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)


root cause 

javax.el.ELException: /dt.xhtml: Property 'Email' not found on type in.ali.pojo.users
    com.sun.faces.facelets.compiler.TextInstruction.write(TextInstruction.java:88)
    com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82)
    com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:302)
    com.sun.faces.renderkit.html_basic.TableRenderer.renderRow(TableRenderer.java:385)
    com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:162)
    javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894)
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
    com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443)
    com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
    com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
    com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)

here is my xhtml page

<?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:h="http://java.sun.com/jsf/html"
       xmlns:f="http://java.sun.com/jsf/core"
       xmlns:ui="http://java.sun.com/jsf/facelets">
    <h:head>
        <title>Facelet Title</title>
    </h:head>
    <h:body>
<h:dataTable value="#{pretechDataTableBean.user}" var="users">
                 <h:column>
                    <f:facet name="header">Name</f:facet>
                    #{users.FName}
                      </h:column>
                 <h:column>
                    <f:facet name="header">Email</f:facet>
                    #{users.Email}
                </h:column>
                <h:column>
                    <f:facet name="header">Password</f:facet>
                    #{users.pwd}
                </h:column>

             </h:dataTable>
    </h:body>
</html>

here is my PretechDataTableBean which i used for retrieving data from DB

package com.pretech; 
import in.ali.pojo.users;
import in.ali.util.HibernateUtil;

import java.util.List;

import org.hibernate.Session;
import org.hibernate.Transaction;



import java.util.ArrayList;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped; 
/**
*
* @author vinod
*/
@ManagedBean
@RequestScoped
public class PretechDataTableBean { 
    public PretechDataTableBean() {
    } 
    public List<users> getUser() {

        Session session = HibernateUtil.getSessionFactory().openSession();
        Transaction transaction = null;
        List<users> users =null;
        try
        {
            transaction = session.beginTransaction();
            users = session.createQuery("from users").list();   



        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        finally{
            session.close();
        }
        return users;


    }
}

This is my users pojo

package in.ali.pojo;

// Generated Sep 28, 2013 3:55:01 PM by Hibernate Tools 4.0.0

/**
 * users generated by hbm2java
 */
public class users implements java.io.Serializable {

    private long UserId;
    private String FName;
    private String LName;
    private long UserTypeId;
    private String UserName;
    private String Email;
    private String Pwd;
    private String Note;
    private boolean IsActive;

    public users() {
    }

    public users(long UserId) {
        this.UserId = UserId;
    }

    public users(long UserId, String FName, String LName, long UserTypeId,
            String UserName, String Email, String Pwd, String Note,
            boolean IsActive) {
        this.UserId = UserId;
        this.FName = FName;
        this.LName = LName;
        this.UserTypeId = UserTypeId;
        this.UserName = UserName;
        this.Email = Email;
        this.Pwd = Pwd;
        this.Note = Note;
        this.IsActive = IsActive;
    }

    public long getUserId() {
        return this.UserId;
    }

    public void setUserId(long UserId) {
        this.UserId = UserId;
    }

    public String getFName() {
        return this.FName;
    }

    public void setFName(String FName) {
        this.FName = FName;
    }

    public String getLName() {
        return this.LName;
    }

    public void setLName(String LName) {
        this.LName = LName;
    }

    public long getUserTypeId() {
        return this.UserTypeId;
    }

    public void setUserTypeId(long UserTypeId) {
        this.UserTypeId = UserTypeId;
    }

    public String getUserName() {
        return this.UserName;
    }

    public void setUserName(String UserName) {
        this.UserName = UserName;
    }

    public String getEmail() {
        return this.Email;
    }

    public void setEmail(String Email) {
        this.Email = Email;
    }

    public String getPwd() {
        return this.Pwd;
    }

    public void setPwd(String Pwd) {
        this.Pwd = Pwd;
    }

    public String getNote() {
        return this.Note;
    }

    public void setNote(String Note) {
        this.Note = Note;
    }

    public boolean isIsActive() {
        return this.IsActive;
    }

    public void setIsActive(boolean IsActive) {
        this.IsActive = IsActive;
    }

}

score 3 · Accepted Answer · edited May 23 '17 at 12:28

The fields must be likeThis instead of LikeThis. Just change your JSF code to

<h:dataTable value="#{pretechDataTableBean.user}" var="user">
    <h:column>
        <f:facet name="header">Name</f:facet>
        #{user.fName}
    </h:column>
    <h:column>
        <f:facet name="header">Email</f:facet>
        #{user.email}
    </h:column>
    <h:column>
        <f:facet name="header">Password</f:facet>
        #{user.pwd}
    </h:column>
</h:dataTable>

And update the field names in your User class to follow the proper Java Bean naming convention.

public class users implements java.io.Serializable {

    private long userId;
    private String fName;
    private String lName;
    private long userTypeId;
    private String userName;
    private String email;
    private String pwd;
    private String note;
    private boolean isActive;
    //constructor, getters and setters
}

Apart from this, there are other bugs in your current design:

You must not have business logic in the getters of your managed bean, instead take advantage of the @PostConstruct method to initialize the necessary data to be used.
Since this bean looks that should stay alive while the user stays in the same view, it will be better to decorate it as @ViewScoped instead of @RequestScoped.
Use proper names for your classes and fields. For example, if you have a List<Something> field, name your variable somethingList or similar in order that the code is self-explanatory.

From these, you can change your managed bean to:

@ManagedBean
@ViewScoped
public class PretechDataTableBean { 

    private List<users> userList;

    public PretechDataTableBean() {
    }

    @PostConstruct
    public void init() {
        Session session = HibernateUtil.getSessionFactory().openSession();
        Transaction transaction = null;
        List<users> users =null;
        try
        {
            transaction = session.beginTransaction();
            users = session.createQuery("from users").list();   



        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        finally{
            session.close();
        }
        return users;
    }

    public List<users> getUserList() {
        return this.user;
    }
}

Since the field changed its name in the managed bean, you should edit it accordingly in the respective view:

<h:dataTable value="#{pretechDataTableBean.userList}" var="user">

Related info:

Why JSF calls getters multiple times
Communication in JSF 2: Managed bean scopes
JavaBeans API Specification , more specifically, Section 7: Properties.

JSF Datatable does not show all List fields(columns)

1 Answers1