I´m trying to develop a simple example of new functionality of JSF 2.2, #FlowScope, I develop it with eclipse luna, glassfish 4.0, I guess the code is right cause I caught it on the web, probably the error is with the configuration of the project. Could anyone give me an Idea of what could be? Pleas ask me further information if it´s hard to understand with these few information but actually I don´t know what more I can write to help and this is my first question on stackoverflow.
public class NestedFlowBuilder implements Serializable {
private static final long serialVersionUID = 1L;
#Produces
#FlowDefinition
public Flow defineCallingFlow
(#FlowBuilderParameter FlowBuilder flowBuilder) {
String flowId = "secondJavaFlow";
flowBuilder.id("", flowId);
flowBuilder.viewNode(flowId, "/java-calling-flow/start-page.xhtml")
.markAsStartNode();
flowBuilder.viewNode("results",
"/java-calling-flow/results-page.xhtml");
flowBuilder.returnNode("return").fromOutcome("/return-page-for-java-calling-flow");
flowBuilder.returnNode("home").fromOutcome("/index");
flowBuilder.flowCallNode("go-to-nested")
.flowReference("", "thirdJavaFlow")
.outboundParameter("paramForNestedFlow",
"#{javaCallingFlowBean.param1}");
return(flowBuilder.getFlow());
}
#Produces
#FlowDefinition
public Flow defineNestedFlow
(#FlowBuilderParameter FlowBuilder flowBuilder) {
String flowId = "thirdJavaFlow";
flowBuilder.id("", flowId);
flowBuilder.viewNode(flowId,
"/java-nested-flow/start-page.xhtml")
.markAsStartNode();
flowBuilder.viewNode("results",
"/java-nested-flow/results-page.xhtml");
flowBuilder.returnNode("return-to-previous-start")
.fromOutcome("secondJavaFlow");
flowBuilder.returnNode("return-to-previous-results")
.fromOutcome("results");
flowBuilder.inboundParameter("paramForNestedFlow",
"#{javaNestedFlowBean.param3}");
return(flowBuilder.getFlow());
}
package coreservlets;
import java.io.Serializable;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.flow.FlowScoped;
import javax.inject.Named;
#Named
#FlowScoped("thirdJavaFlow")
public class JavaNestedFlowBean implements Serializable {
private static final long serialVersionUID = 1L;
private String param3, param4;
public String doFlow() {
if (param3.equalsIgnoreCase(param4)) {
FacesContext context = FacesContext.getCurrentInstance();
FacesMessage fMessage =
new FacesMessage("Params must be distinct");
fMessage.setSeverity(FacesMessage.SEVERITY_ERROR);
context.addMessage(null, fMessage);
return(null);
} else {
return("results");
}
}
public String getParam3() {
return param3;
}
public void setParam3(String param3) {
this.param3 = param3;
}
public String getParam4() {
return param4;
}
public void setParam4(String param4) {
this.param4 = param4;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
}
<?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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Java Calling Flow Start PAge</title>
</head>
<body>
<h:form>
<h:messages globalOnly="true" styleClass="error"/>
<h:panelGrid columns="3" styleClass="formTable">
Param 1:
<h:inputText value="#{javaCallingFlowBean.param1}" id="param1"
required="true"
requiredMessage="Param 1 is required"/>
<h:message for="param1" styleClass="error"/>
Param 2:
<h:inputText value="#{javaCallingFlowBean.param2}" id="param2"
required="true"
requiredMessage="Param 2 is required"/>
<h:message for="param2" styleClass="error"/>
<f:facet name="footer">
<h:commandButton value="Show Results"
action="#{javaCallingFlowBean.doFlow}"/><br/>
</f:facet>
</h:panelGrid>
</h:form>
</body>
</html>
I get this error:
javax.el.ELException: /java-calling-flow/start-page.xhtml #17,40 value="#{javaCallingFlowBean.param1}": org.jboss.weld.context.ContextNotActiveException: WELD-001303 No active contexts for scope type javax.faces.flow.FlowScoped
http://courses.coreservlets.com/Course-Materials/pdf/jsf/jsf2/JSF-2.2-Faces-Flow-2.pdf from pag 33
Related
I have a table FAQ ( Frequently asked questions )
Here's the Bean:
package projet.helpdesk.beans;
import javax.persistence.*;
#Entity
#Table(name="faq")
public class FAQ {
#Id
private int id_qr;
private int id_technicien;
private String question;
private String reponse;
public int getId_qr() {
return id_qr;
}
public void setId_qr(int id_qr) {
this.id_qr = id_qr;
}
public int getId_technicien() {
return id_technicien;
}
public void setId_technicien(int id_technicien) {
this.id_technicien = id_technicien;
}
public String getQuestion() {
return question;
}
public void setQuestion(String question) {
this.question = question;
}
public String getReponse() {
return reponse;
}
public void setReponse(String reponse) {
this.reponse = reponse;
}
}
This is the DAO class:
The function public List<FAQ> chargerFAQ() is supposed to return a list of FAQ.
The JPQL query is: private static final String JPQL_SELECT_ALL = "SELECT f FROM FAQ f";
`package projet.helpdesk.dao;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import projet.helpdesk.beans.FAQ;
#Stateless
public class FAQDao {
private static final String JPQL_SELECT_ALL = "SELECT f FROM FAQ f";
private static final String JPQL_SELECT_QR = "SELECT f FROM FAQ f WHERE id_qr=:id_qr";
private static final String PARAMETER = "id_qr";
#PersistenceContext( unitName = "bdd_helpdesk_PU" )
private EntityManager em;
public void creer( FAQ faq ) throws IllegalArgumentException, DAOException {
try {
em.persist(faq);
} catch ( Exception e ) {
throw new DAOException( e );
}
}
public List<FAQ> chargerFAQ() throws DAOException {
List<FAQ> listefaq;
Query query = em.createQuery(JPQL_SELECT_ALL);
try {
listefaq = (List<FAQ>) query.getResultList();
} catch ( NoResultException e ) {
return null;
} catch(Exception e) {
throw new DAOException(e);
}
return listefaq;
}
public FAQ trouverQR(int id_qr) throws DAOException{
FAQ qr;
Query query = em.createQuery(JPQL_SELECT_QR);
query.setParameter(PARAMETER, id_qr);
try {
qr = (FAQ) query.getSingleResult();
} catch ( NoResultException e ) {
return null;
} catch(Exception e) {
throw new DAOException(e);
}
return qr;
}
}
`
Persisting the FAQ entity was successful, but loading the data does'nt return anything, maybe the query instruction is wrong?
Here's the servlet:
`#WebServlet ( urlPatterns = { "/afficherfaq" })
public class AfficherFaq extends HttpServlet {
#EJB
private FAQDao faqDao;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.getServletContext().getRequestDispatcher("/WEB-INF/ChargerFaq.jsp").forward(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
List<FAQ> lfaq = faqDao.chargerFAQ();
request.setAttribute("lfaq", lfaq);
this.getServletContext().getRequestDispatcher("/WEB-INF/ChargerFaq.jsp").forward(request, response);
}
}
`
And the Entity's path is included in the persistence.xml file.
EDIT: Added JSP code.
JSP file to show the result:
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link type="text/css" rel="stylesheet" href="inc/style.css" />
<title>Foire aux questions</title>
</head>
<body>
Test
<c:forEach items="${lfaq}" var="faq" varStatus="boucle">
<fieldset>
<p><span class="info">Question:</span></p><br>
<p>${faq.question}</p><br>
<p><span class="info">Reponse:</span></p><br>
<p>${faq.reponse}</p><br>
</fieldset><br><br>
</c:forEach>
</body>
</html>
So .. I have two tables Utilisateur and ReponsesTickets ( there's no trouble inserting selecting updating deleting from each table by itself) to make a join between these two tables i had to create a new Entity here's its code.
package projet.helpdesk.beans;
import java.sql.Timestamp;
//TEXTE - DATE_POST - NOM - PRENOM - AGENCE - POSTE - DEPARTEMENT - ID_EMPLOYE
public class Jointure1 {
private String texte;
private String nom;
private String prenom;
private String Agence;
private String poste;
private String departement;
private int id_employe;
private Timestamp date_post;
public String getTexte() {
return texte;
}
public void setTexte(String texte) {
this.texte = texte;
}
public String getNom() {
return nom;
}
public void setNom(String nom) {
this.nom = nom;
}
public String getPrenom() {
return prenom;
}
public void setPrenom(String prenom) {
this.prenom = prenom;
}
public String getAgence() {
return Agence;
}
public void setAgence(String agence) {
Agence = agence;
}
public String getPoste() {
return poste;
}
public void setPoste(String poste) {
this.poste = poste;
}
public String getDepartement() {
return departement;
}
public void setDepartement(String departement) {
this.departement = departement;
}
public int getId_employe() {
return id_employe;
}
public void setId_employe(int id_employe) {
this.id_employe = id_employe;
}
public Timestamp getDate_post() {
return date_post;
}
public void setDate_post(Timestamp date_post) {
this.date_post = date_post;
}
}
That's the SQL instruction i'm trying to translate into JPQL.
SELECT u.nom, u.prenom, r.texte, r.date_post
FROM Utilisateur u, ReponseTicket r
WHERE u.id_emp = r.id_employe
AND r.id_ticket = ? ( parameter here )
This is the method in the DAO pattern.
private static final String PARAM_TICKET = "id_ticket";
private static final String JPQL_SELECT ="SELECT u.nom, u.prenom, r.texte, r.date_post FROM Utilisateur u JOIN ReponseTicket r ON u.id_emp = r.id_employe AND r.id_ticket=:id_ticket";
//^ Above is the JPQL instruction, not sure if it's correct.
#PersistenceContext( unitName = "bdd_helpdesk_PU" )
private EntityManager em;
public List<Jointure1> trouverJointure( int id_ticket ) throws DAOException {
List<Jointure1> liste;
TypedQuery<Jointure1> query = em.createQuery(JPQL_SELECT, Jointure1.class);
query.setParameter(PARAM_TICKET, id_ticket);
try {
liste = (List<Jointure1>) query.getResultList();
} catch ( NoResultException e ) {
return null;
} catch(Exception e) {
throw new DAOException(e);
}
return liste;
}
Then goes the ResponseForm that communicates with the DAO method.
this method collects the ticket id from the request and passes it to the DAOmethod to insert it into the JPQL instruction.
public List<Jointure1> recupererJointure(HttpServletRequest request)
{
List<Jointure1> ljointure;
int id = getId_ticket(request);
if(id!=0){
ljointure = reponseDao.trouverJointure(id);
}else ljointure=null;
return ljointure;
}
Stacktrace:
Caused by: Exception [EclipseLink-6168] (Eclipse Persistence Services - 2.6.1.v20150605-31e8258): org.eclipse.persistence.exceptions.QueryException
Exception Description: Query failed to prepare, unexpected error occurred: [java.lang.NullPointerException].
Internal Exception: java.lang.NullPointerException
Query: ReportQuery(referenceClass=Utilisateur jpql="SELECT u.nom, u.prenom, r.texte, r.date_post FROM Utilisateur u JOIN ReponseTicket r ON u.id_emp = r.id_employe AND r.id_ticket=:id_ticket")
I don't know about the null pointer exception, the parameter id_ticket is visible in the URL.
However i didn't add the new Entity in the persistence.xml
http://localhost:4040/monprojet2/reponsesticket?id_ticket=62
This is the servlet.
package projet.helpdesk.servlets;
#WebServlet(urlPatterns={"/reponsesticket"})
public class Reponsestickets extends HttpServlet {
#EJB
private TicketDao ticketDao;
#EJB
private ReponseTicketDao reponseDao;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
CreationTicketForm ticketform = new CreationTicketForm(ticketDao);
Ticket ticket = ticketform.recupererTicket(request);
CreationReponseForm reponse = new CreationReponseForm(reponseDao);
List<Jointure1> listereponse = reponse.recupererJointure(request);
if(ticket==null)
{
response.sendRedirect("/connexion");
} else {
request.setAttribute("lreponse", listereponse);
request.setAttribute("ticket", ticket);
this.getServletContext().getRequestDispatcher("/WEB-INF/ReponsesTickets.jsp").forward(request, response);
}
}
}
EDIT:
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Réponses ticket</title>
<meta http-equiv="Content-Type" content="text/html">
<link type="text/css" rel="stylesheet" href="inc/style.css" />
</head>
<body>
<p>Test---> <br>votre id:${masession.idemp}<br>
Type:${masession.type}<br>
</p>
<fieldset>
<legend>Réponses pour ticket id: ${ticket.id_ticket}</legend><br>
<p>Sujet:</p> ${ticket.sujet} <br>
<p>Description:</p> ${ticket.description}<br>
</fieldset>
<br>
<c:forEach items="${lreponse}" var="reponse">
<p>Nom: ${reponse.nom}</p>
<p>Prenom: ${reponse.prenom }</p>
<p>Réponse: ${reponse.texte }</p>
<p>Date: ${reponse.date_post }</p>
<br><br>
</c:forEach>
<br><br><br>
<fieldset>
<legend>Répondre:</legend>
<form method="post" action="creerreponse" enctype="application/x-www-form-urlencoded">
<textarea rows="5" cols="36" name="texte"></textarea>${erreurs['texte']}<br/>
<input type="hidden" name="id_employe" value="${masession.idemp}">
<input type="hidden" name="id_ticket" value="${ticket.id_ticket}">
<input type="hidden" name="type" value="${masession.type}">
<input type="submit" value="Valider"><br/>
</form>
<p></p>
</fieldset>
</body>
</html>
Stacktrace:
[2017-05-03T16:47:49.790+0100] [glassfish 4.1] [WARNING] [] [javax.enterprise.web] [tid: _ThreadID=30 _ThreadName=http-listener-1(4)] [timeMillis: 1493826469790] [levelValue: 900] [[
StandardWrapperValve[projet.helpdesk.servlets.Reponsestickets]: Servlet.service() for servlet projet.helpdesk.servlets.Reponsestickets threw exception
java.lang.NumberFormatException: For input string: "nom"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:580)
at java.lang.Integer.parseInt(Integer.java:615)
at javax.el.ArrayELResolver.toInteger(ArrayELResolver.java:378)
at javax.el.ArrayELResolver.getValue(ArrayELResolver.java:198)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:188)
at com.sun.el.parser.AstValue.getValue(AstValue.java:140)
at com.sun.el.parser.AstValue.getValue(AstValue.java:204)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
at org.apache.jasper.runtime.PageContextImpl.evaluateExpression(PageContextImpl.java:1016)
at org.apache.jsp.WEB_002dINF.ReponsesTickets_jsp._jspx_meth_c_forEach_0(ReponsesTickets_jsp.java:143)
at org.apache.jsp.WEB_002dINF.ReponsesTickets_jsp._jspService(ReponsesTickets_jsp.java:85)
I'm working on a project. I need to get a list from MySql database and list it. I'm using JSF 2.1 Primeface 3.5 and Eclipse Juno. I run my code but it doesn't work. You can see my codes in below
//LOGIN CLASS
import parts
#ManagedBean
#SessionScoped
public class Login {
private String username, password;
private PreparedStatement ps, ps2;
private ResultSet rs, rs2;
private List<Application> applications = new ArrayList<Application>();;
private Application selectedApplication;
// GETTERS SETTERS
public String login() {
Connection object = new Connection();
try {
ps = nesne
.getCon()
.prepareStatement(
"select Username, Password from company where Username=? and Password=?");
ps.setString(1, getUsername());
ps.setString(2, getPassword());
rs = ps.executeQuery();
while (rs.next()) {
getList();
return "application";
}
} catch (Exception e) {
System.err.println(e);
}
return "confirm";
}
private List<Application> getList() {
Baglanti nesne = new Baglanti();
try {
ps2 = nesne
.getCon()
.prepareStatement(
"select ApplicationName from application where CompanyID=(select ID from company "
+ "where Username=? and Password=?)");
ps2.setString(1, getUsername());
ps2.setString(2, getPassword());
rs2 = ps2.executeQuery();
while (rs2.next()) {
Application obj = new Application();
obj.setApplicationName(rs2.getString("ApplicationName"));
applications.add(obj);
}
} catch (Exception e) {
System.err.println(e);
}
return applications;
}
APPLICATION CLASS
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
#ManagedBean
#SessionScoped
public class Application {
private int ID;
private int CompanyID;
private String Type;
private Date Date;
private String ApplicationName;
private int CurrentMessageCount;
private int MaxMessage;
private String isPro;
//GETTERS SETTERS
application.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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head>
<title>Login Confirmed</title>
</h:head>
<h:body>
<h1 class="ui-widget-header ui-corner-all" align="center">Application
List</h1>
<br />
<h:form id="form">
<p:growl id="msgs" showDetail="true" />
<p:dataTable id="applications" var="application"
value="#{login.applications}">
<p:column headerText="Application" style="width:24%">
<h:outputText value="#{login.applications}" />
</p:column>
<p:column style="width:4%">
<p:commandButton id="selectButton" icon="ui-icon-search"
title="View">
<f:setPropertyActionListener value="#{application}"
target="#{login.selectedApplication}" />
</p:commandButton>
</p:column>
</p:dataTable>
</h:form>
I can login properly after that ı saw this page.
Now where is my mistake?
Your var="application" is conflicting with the implicit EL object referring the application context (the ServletContext). You can find here a list of all implicit EL objects. Memorize them. You should never declare an EL variable on exactly those names.
Give it a different name. E.g. var="app", var="_application", etc.
In data table var property mean that every item from database will be accesible as this "var" value. i.e:
You have class Foo:
class Foo{
int number;
String text;
//Setters and getters
}
And another class which handle list of Foo objects (your model as CDI Bean):
#Named
class Boo{
List<Foo> list = new ArrayList<>();
//Getter and setters
}
So to list it all in jsf page you should use it like this:
<p:dataTable id="list" var="listobject" value="#{boo.list}">
<p:column headerText="Number" style="width:24%">
<h:outputText value="#{listobject.number}" />
</p:column>
<p:column headerText="Text" style="width:24%">
<h:outputText value="#{listobject.String}" />
</p:column>
</p:dataTable>
So summary "var" value is accessor string to boo object.
Look also:
PrimeFaces datatable demo and here
Mkyong datatable tutorial
Using GWT 2.5.0,
I would like to use Client side validation and Editors. I encounter the following error when trying to pass the ConstraintViolation java.util.Set to the EditorDriver as follows.
Validator a = Validation.buildDefaultValidatorFactory().getValidator();
Set<ConstraintViolation<Person>> b = a.validate(person);
editorDriver.setConstraintViolations(b);
The method setConstraintViolations(Iterable<ConstraintViolation<?>>) in the type EditorDriver<Person> is not applicable for the arguments (Set<ConstraintViolation<Person>>)
The only somewhat relevant post I could find was Issue 6270!
Below is an Example which brings up a PopUpDialog with a Person Editor that allows you to specify a name and validate it against your annotations. Commenting out the personDriver.setConstraintViolations(violations); line in the PersonEditorDialog will allow you to run the example.
I don't have enough reputation points to post the image of the example.
Classes
Person
public class Person {
#NotNull(message = "You must have a name")
#Size(min = 3, message = "Your name must contain more than 3 characters")
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
PersonEditorDialog
public class PersonEditorDialog extends DialogBox implements Editor<Person> {
private static PersonEditorDialogUiBinder uiBinder = GWT
.create(PersonEditorDialogUiBinder.class);
interface PersonEditorDialogUiBinder extends
UiBinder<Widget, PersonEditorDialog> {
}
private Validator validator;
public PersonEditorDialog() {
validator = Validation.buildDefaultValidatorFactory().getValidator();
setWidget(uiBinder.createAndBindUi(this));
}
interface Driver extends SimpleBeanEditorDriver<Person, PersonEditorDialog> {
};
#UiField
ValueBoxEditorDecorator<String> nameEditor;
#UiField
Button validateBtn;
private Driver personDriver;
#UiHandler("validateBtn")
public void handleValidate(ClickEvent e) {
Person created = personDriver.flush();
Set<ConstraintViolation<Person>> violations = validator
.validate(created);
if (!violations.isEmpty() || personDriver.hasErrors()) {
StringBuilder violationMsg = new StringBuilder();
for (Iterator<ConstraintViolation<Person>> iterator = violations.iterator(); iterator.hasNext();) {
ConstraintViolation<Person> constraintViolation = (ConstraintViolation<Person>) iterator
.next();
violationMsg.append(constraintViolation.getMessage() + ",");
}
Window.alert("Detected violations:" + violationMsg);
personDriver.setConstraintViolations(violations);
}
}
#Override
public void center() {
personDriver = GWT.create(Driver.class);
personDriver.initialize(this);
personDriver.edit(new Person());
super.center();
}
}
SampleValidationFactory
public final class SampleValidationFactory extends AbstractGwtValidatorFactory {
/**
* Validator marker for the Validation Sample project. Only the classes and
* groups listed in the {#link GwtValidation} annotation can be validated.
*/
#GwtValidation(Person.class)
public interface GwtValidator extends Validator {
}
#Override
public AbstractGwtValidator createValidator() {
return GWT.create(GwtValidator.class);
}
}
EditorValidationTest
public class EditorValidationTest implements EntryPoint {
/**
* This is the entry point method.
*/
public void onModuleLoad() {
PersonEditorDialog personEditorDialog = new PersonEditorDialog();
personEditorDialog.center();
}
}
UiBinder
PersonEditorDialog.ui.xml
<!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent">
<ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder"
xmlns:g="urn:import:com.google.gwt.user.client.ui" xmlns:e="urn:import:com.google.gwt.editor.ui.client">
<ui:style>
.important {
font-weight: bold;
}
</ui:style>
<g:HTMLPanel>
<g:Label>Enter your Name:</g:Label>
<e:ValueBoxEditorDecorator ui:field="nameEditor">
<e:valuebox>
<g:TextBox />
</e:valuebox>
</e:ValueBoxEditorDecorator>
<g:Button ui:field="validateBtn">Validate</g:Button>
</g:HTMLPanel>
</ui:UiBinder>
GWT Module
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.5.0//EN"
"http://google-web-toolkit.googlecode.com/svn/tags/2.5.0/distro-source/core/src/gwt-module.dtd">
<module rename-to='editorvalidationtest'>
<inherits name='com.google.gwt.user.User' />
<inherits name='com.google.gwt.user.theme.clean.Clean' />
<inherits name="com.google.gwt.editor.Editor"/>
<!-- Validation module inherits -->
<inherits name="org.hibernate.validator.HibernateValidator" />
<replace-with
class="com.test.client.SampleValidationFactory">
<when-type-is class="javax.validation.ValidatorFactory" />
</replace-with>
<!-- Specify the app entry point class. -->
<entry-point class='com.test.client.EditorValidationTest' />
<!-- Specify the paths for translatable code -->
<source path='client' />
<source path='shared' />
</module>
Libs required on Classpath
hibernate-validator-4.1.0.Final.jar
hibernate-validator-4.1.0.Final-sources.jar
validation-api-1.0.0.GA.jar (in GWT SDK)
validation-api-1.0.0.GA-sources.jar (in GWT SDK)
slf4j-api-1.6.1.jar
slf4j-log4j12-1.6.1.jar
log4j-1.2.16.jar
As discussed in the comments, the following cast was determined to be a valid workaround.
Set<?> test = violations;
editorDriver.setConstraintViolations((Set<ConstraintViolation<?>>) test);
This is what I do over and over again :
List<ConstraintViolation<?>> adaptedViolations = new ArrayList<ConstraintViolation<?>>();
for (ConstraintViolation<Person> violation : violations) {
adaptedViolations.add(violation);
}
editorDriver.setConstraintViolations(adaptedViolations);
The driver has a wild card generic type defined and you can not pass in the typed constraint violations.
This question already has answers here:
JasperException: The value for the useBean class attribute is invalid
(6 answers)
Closed 3 years ago.
I am new in JSP and trying to to simple power calculater. So I take 2 numbers from user and later I get result of calculation and show on page. Here is my bean class:
package org.mypackage.power;
public class MyPow {
private double base;
private double pow;
private double result;
MyPow()
{
base = 0;
pow=1;
}
/**
* #return the base
*/
public double getBase() {
return base;
}
/**
* #param base the base to set
*/
public void setBase(double base) {
this.base = base;
}
/**
* #return the pow
*/
public double getPow() {
return pow;
}
/**
* #param pow the pow to set
*/
public void setPow(double pow) {
this.pow = pow;
}
/**
* #return the result
*/
public double getResult() {
return Math.pow(base, pow);
}
/**
* #param result the result to set
*/
public void setResult(double result) {
this.result = result;
}
}
And here is the index page:
<HTML>
<BODY>
<FORM METHOD=POST ACTION="result.jsp">
What's your base? <INPUT TYPE=TEXT NAME=base SIZE=20>
What is your power <INPUT TYPE=TEXT NAME=power SIZE=10>
<P><INPUT TYPE=SUBMIT>
</FORM>
</BODY>
</HTML>
And here is the JSP page that will show the result
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Hello World!</h1>
<jsp:useBean id="powerBean" scope="session" class="org.mypackage.power.MyPow" />
<jsp:setProperty name="powerBean" property="*"/>
<jsp:getProperty name="powerBean" property="result"/>
</body>
</html>
And this code gives
The value for the useBean class attribute is invalid
My class is under the org.mypackage.power.MyPow package. Before I update this it was a simple hello world and was working correctly. But I just change class and add new fields and changed JSP page. Could anyone help me please?
I am using Tomcat 7.0.14 and Netbeans 7.01
This error basically means that
MyPow powerBean = new MyPow();
has failed.
The beans are required to have a public constructor. So, change the package-private constructor
MyPow() {
// ...
}
to a public constructor
public MyPow() {
// ...
}
This way JSP (which is by itself in a different package) will be able to access and invoke the bean's constructor.
You only need to restart Tomcat. This will solve your problem. The easy way, from your Tomcat root directory (Mac or Linux):
$ ./bin/shutdown.sh
$ ./bin/startup.sh
In Windows it must be with .bat files...
public User() {
super();
}
After adding default constructor, it worked fine without error