i want use Primefaces BlockUI's widgetvar (at the moment i use a modal dialog for it). The application should block only when i select something (a long method will call) and unblock after complete. But it blocks the full side on first side access. Make i something wrong?
When i block the table specific it works. (block="table") But i want block the whole page.
Use Primefaces 5.1 & Mojarra 2.2.8
Short example:
xhtml:
<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>test</title>
</h:head>
<h:body>
<h:form>
<p:blockUI widgetVar="block" blocked="false"/>
<p:dataTable id="table" value="#{myController.tableItems}" rowKey="#{data}"
selection="#{myController.selectedItem}" selectionMode="Single"
var="data">
<p:ajax event="rowSelect" onstart="PF('block').show()"
listener="#{myController.doSomething}"
oncomplete="PF('block').hide()" />
<p:column>#{data}</p:column>
</p:dataTable>
</h:form>
</h:body>
</html>
Bean:
#ManagedBean
#ViewScoped
public final class MyController implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private List<String> tableItems;
private String selectedItem;
#PostConstruct
public void init() {
tableItems = new ArrayList<String>();
tableItems.add("test1");
tableItems.add("test2");
}
public void doSomething(SelectEvent event){
System.out.println("DO Something");
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String getSelectedItem() {
return selectedItem;
}
public void setSelectedItem(String selectedItem) {
this.selectedItem = selectedItem;
}
public List<String> getTableItems() {
return tableItems;
}
public void setTableItems(List<String> tableItems) {
this.tableItems = tableItems;
}
}
Add an id attribute the body and use that in the block= attribute on the blockui component
Related
My class is as follows:
public class TestBean implements Serializable{
private int id;
private String name;
private boolean showOut;
public TestBean(){
showOut=false;
}
public void submit(){
System.out.println("id-----"+id);
}
public void whatsTheName(AjaxBehaviorEvent e){
System.out.println("listener called");
if(id==0){
name="Dog";
showOut=true;
}
else if(id==1)
name="Cat";
else
name="Bird";
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
System.out.println("name called-----"+name);
return name;
}
public void setName(String name) {
this.name = name;
}
public boolean isShowOut() {
System.out.println("showOut called----"+showOut);
return showOut;
}
public void setShowOut(boolean showOut) {
this.showOut = showOut;
}
}
and xhtml is :
<!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:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
</h:head>
<h:body>
<h:form id="frm1">
<h:selectOneMenu value="#{testBean.id}">
<f:selectItem itemLabel="Dog" itemValue="0"></f:selectItem>
<f:selectItem itemLabel="Cat" itemValue="1"></f:selectItem>
<f:selectItem itemLabel="Bird" itemValue="2"></f:selectItem>
<f:ajax execute="#form" event="change"
listener="#{testBean.whatsTheName}" render=":frm2:out"></f:ajax>
</h:selectOneMenu>
</h:form>
<br></br>
<br></br>
<h:form id="frm2">
<h:outputText id="out" value="#{testBean.name}" rendered="#{testBean.showOut}"/>
</h:form>
I want to show the Output box only when 'Dog' is selected. But rendered on outputText is not working even though the value of the particular variable is set properly on the backing bean.
You can fix by rendering entire frm2 render=":frm2".
As suggested by wittakarn, modify the render attribute and your outputText is rendered correctly.
But it will never disapper, because you never set showOut to false if a new selection is different to "Dog".
My suggestion is to change the content von whatsTheName(...) like so:
public void whatsTheName(AjaxBehaviorEvent e) {
System.out.println("listener called");
// change showOut in any case
showOut = (id == 0);
// apply text accordingly to the selected id
switch (id) {
case 0:
name = "Dog";
break;
case 1:
name = "Cat";
break;
case 2:
name = "Bird";
break;
}
}
i have a datatable with one row , i need to edit the fields of this row so i have a few inputText with the values, but when i edit them and click on the commandbutton(that calls the method "actualizarUsuario" the values are passed as null.
this is my bean code:
#ManagedBean(name = "user")
#ViewScoped
public class userDetalles implements Serializable {
private Usuario u;
private usuarioController controlador;
Rol rol;
private long selection;
private long selectionrol;
Agrupacion agrupacion;
private Privilegio privilegio;
private RolController controladorRol;
private ControladorAgrupaciones controladorAgrup;
private String nombres;
private String apellidoP;
private String apellidoM;
private Boolean check;
#PostConstruct
public void init() {
rol= new Rol() ;
u=new Usuario();
agrupacion=new Agrupacion();
privilegio=new Privilegio();
controlador= new usuarioController();
controladorRol=new RolController();
controladorAgrup=new ControladorAgrupaciones();
Usuario u=new Usuario();
FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = facesContext.getExternalContext();
//Obtener parametros del request
Map<String, String> parameterMap = (Map<String, String>) externalContext.getRequestParameterMap();
long iduser = Long.valueOf(parameterMap.get("id_usuario"));
this.u=controlador.getUser(iduser);
}
public Usuario getU() {
return u;
}
public void setU(Usuario u) {
this.u = u;
}
public long getSelection() {
System.out.println("selection value----------->"+selection);
return selection;
}
public void setSelection(long selection) {
this.selection = selection;
}
public long getSelectionrol() {
return selectionrol;
}
public void setSelectionrol(long selectionrol) {
this.selectionrol = selectionrol;
}
public String getNombres() {
return nombres;
}
public void setNombres(String nombres) {
this.nombres = nombres;
}
public String getApellidoP() {
return apellidoP;
}
public void setApellidoP(String apellidoP) {
this.apellidoP = apellidoP;
}
public String getApellidoM() {
return apellidoM;
}
public void setApellidoM(String apellidoM) {
this.apellidoM = apellidoM;
}
public Boolean getCheck() {
return check;
}
public void setCheck(Boolean check) {
this.check = check;
}
public void actualizarUsuario(){
FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = facesContext.getExternalContext();
Map<String, String> parameterMap = (Map<String, String>) externalContext.getRequestParameterMap();
nombres=parameterMap.get("nombres");
apellidoP=parameterMap.get("apellidoP");
apellidoM=parameterMap.get("apellidoM");
check=Boolean.parseBoolean(parameterMap.get("check"));
//test
System.out.println(nombres+" "+apellidoP+" "+apellidoM+" "+check);
u.setNombres(nombres);
u.setApellidoPaterno(apellidoP);
u.setApellidoMaterno(apellidoM);
u.setActive(check);
controlador.saveUsuario(u);
}
}
and this is my view:
<?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">
<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<div class="container">
<h:panelGroup id="Users">
<h:form id="Form">
<h2>Detalles Usuario</h2>
<h:dataTable id="users" value="#{user.u}" styleClass="table table-striped table-bordered" headerClass="sorting_asc"
rowClasses="odd,even">
<h:column>
<f:facet name="header">#</f:facet>
#{user.u.id}
</h:column>
<h:column>
<f:facet name="header">Identificador</f:facet>
<h:inputText id="identificador" value="#{user.u.identificador}" />
</h:column>
<h:column>
<f:facet name="header">Nombre</f:facet>
<h:inputText id="nombres" value="#{user.u.nombres}"/>
<h:inputText id="apellidoP" value="#{user.u.apellidoPaterno}"/>
<h:inputText id="apellidoM" value="#{user.u.apellidoMaterno}"/>
</h:column>
<h:column>
<f:facet name="header">Active</f:facet>
<h:selectBooleanCheckbox id="check" value="#{user.u.active}"></h:selectBooleanCheckbox>
</h:column>
</h:dataTable>
<h:commandButton value="Actualizar" type="submit" styleClass="btn-primary" actionListener="#{user.actualizarUsuario}">
</h:commandButton>
</h:form>
<script type="text/javascript" src="js/paging-bootstrap.js"></script>
<script type="text/javascript" src="js/contenidoc.datatable.init.js"></script>
</h:panelGroup>
</div>
</ui:composition>
Your concrete problem is caused because you used the wrong parameter names. Look in the generated HTML output and the HTTP traffic monitor for the right parameter names.
However, your actual problem is bigger: your view/model approach is completely wrong. You shouldn't be using a <h:dataTable> at all. It is intented for a collection of entities like List<User>, not for a single entity like User. You should be using <h:panelGrid>. You don't need to explode/flatten model properties in controller at all. You have those properties already in the model itself. You don't need to manually traverse the request parameter map. JSF will already do all the job for you.
I won't rewrite this mess for you, but to the point you should follow the following kickoff example:
Model:
public class User {
private Long id;
private String username;
private String firstname;
private String lastname;
// ...
// Autogenerate standard getters/setters.
}
Controller:
#ManagedBean
#ViewScoped
public class EditUser {
private User user; // Initialize it in postconstruct or as viewparam.
private UserService service; // Initialize it as #EJB or in postconstruct.
public void save() {
service.save(user); // That's all. Really.
}
public User getUser() {
return user;
}
// No other getters/setters! They are all already in User class.
}
View:
<h:panelGrid>
<h:inputText value="#{editUser.user.username}" />
<h:inputText value="#{editUser.user.firstname}" />
<h:inputText value="#{editUser.user.lastname}" />
<h:commandButton value="save" action="#{editUser.save}" />
</h:panelGrid>
That's all. See also among others this JSF 2.0 tutorial. As to your attempt to get the user by ID, you should rather use <f:viewParam>, see also What can <f:metadata>, <f:viewParam> and <f:viewAction> be used for? and communication in JSF 2.0.
I put this problem in a simple example, a composite component that calculates the sum of 2 inputs and prints the result in an outputText
Main JSF page:
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:ez="http://java.sun.com/jsf/composite/ezcomp/">
<h:head></h:head>
<h:body>
<ez:Calculator />
<br/>
<br/>
<ez:Calculator />
<br/>
<br/>
<ez:Calculator />
</h:body>
</html>
Composite component 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:composite="http://java.sun.com/jsf/composite"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>This content will not be displayed</title>
</h:head>
<h:body>
<composite:interface componentType="calculator">
</composite:interface>
<composite:implementation>
<h:form>
<h:inputText id="first" value="#{cc.firstNumber}" />
<h:commandButton value="+" action="#{cc.sum}"/>
<h:inputText id="second" value="#{cc.secondNumber}" />
</h:form>
<h:outputText id="result" value="#{cc.result}" />
</composite:implementation>
</h:body>
</html>
Composite component backing bean:
package ez;
import javax.faces.component.FacesComponent;
import javax.faces.component.UINamingContainer;
#FacesComponent("calculator")
public class Calculator extends UINamingContainer {
private Long firstNumber;
private Long secondNumber;
private Long result;
public Calculator() {
}
#Override
public String getFamily() {
return "javax.faces.NamingContainer";
}
public void setFirstNumber(String firstNumber) {
this.firstNumber = Long.parseLong(firstNumber);
}
public String getFirstNumber() {
if(firstNumber == null) {
return null;
}
return firstNumber.toString();
}
public void setSecondNumber(String secondNumber) {
this.secondNumber = Long.parseLong(secondNumber);
}
public String getSecondNumber() {
if(secondNumber == null) {
return null;
}
return secondNumber.toString();
}
public String getResult() {
if(result == null) {
return null;
}
return result.toString();
}
public void setResult(String result) {
this.result = Long.parseLong(result);
}
public void sum() {
this.result = this.firstNumber + this.secondNumber;
}
}
So, I have 3 Composite Components that all should do the same thing, but when I press a SUM button, after the server processes the request, the result is printed out on the page, but the other 2 components are cleared of their values.
How can I prevent this? How can I force it to retain those values?
UIComponent instances are recreated on every request, hereby losing all instance variables everytime. They basically act like request scoped managed beans, while you intend to have them in the view scope. You need to take view state saving into account on a per-attribute basis. This is normally by default already done for all attributes of #{cc.attrs}. So, if you can, just make use of it:
<cc:interface componentType="calculator">
<cc:attribute name="firstNumber" type="java.lang.Long" />
<cc:attribute name="secondNumber" type="java.lang.Long" />
</cc:interface>
<cc:implementation>
<h:form>
<h:inputText id="first" value="#{cc.attrs.firstNumber}" />
<h:commandButton value="+" action="#{cc.sum}"/>
<h:inputText id="second" value="#{cc.attrs.secondNumber}" />
</h:form>
<h:outputText id="result" value="#{cc.attrs.result}" />
</cc:implementation>
with just this (nullchecks omitted; I recommend to make use of required="true" on the inputs)
#FacesComponent("calculator")
public class Calculator extends UINamingContainer {
public void sum() {
Long firstNumber = (Long) getAttributes().get("firstNumber");
Long secondNumber = (Long) getAttributes().get("secondNumber");
getAttributes().put("result", firstNumber + secondNumber);
}
}
Otherwise, you'd have to take state saving into account yourself by delegating all attribute getters/setters to UIComponent#getStateHelper(). Based on the very same Facelets code as you have, the entire backing component would look like this:
#FacesComponent("calculator")
public class Calculator extends UINamingContainer {
public void sum() {
setResult(getFirstNumber() + getSecondNumber());
}
public void setFirstNumber(Long firstNumber) {
getStateHelper().put("firstNumber", firstNumber);
}
public Long getFirstNumber() {
return (Long) getStateHelper().eval("firstNumber");
}
public void setSecondNumber(Long secondNumber) {
getStateHelper().put("secondNumber", secondNumber);
}
public Long getSecondNumber() {
return (Long) getStateHelper().eval("secondNumber");
}
public void setResult(Long result) {
getStateHelper().put("result", result);
}
public Long getResult() {
return (Long) getStateHelper().eval("result");
}
}
See, no local variables anymore. Note that I also removed the need for those ugly manual String-Long conversions by just declaring the right getter return type and setter argument type. JSF/EL will do the conversion automagically based on default converters or custom Converters. As there's already a default one for Long, you don't need to provide a custom Converter.
Unrelated to the concrete problem, you can safely remove the getFamily() method. The UINamingContainer already provides exactly this. If you were implementing NamingContainer interface instead, then you'd indeed need to provide it yourself, but this is thus not the case here. The above backing component examples have it already removed.
I like to know whats the correct way to create a login/logout mechanizm in jsf2 environment.
I have created a login xhtml form and a Admin bean that stores a static boolean (is_authenticated) . I want to check that variable in every xhtml page , if true? continue , else redirect to login page.
this is Admin.java bean:
#ManagedBean
#SessionScoped
public class Admin implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
static Boolean authenticated;
String username;
String password;
#PostConstruct
public void initialisation() { // init bean on new instance
Admin.authenticated = false;
}
public Boolean getAuthenticated(){
return Admin.authenticated;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String doLogout() {
Admin.authenticated=false;
return "login?faces-redirect=true";
}
public String validity() {
if(username.equals("admin") && password.equals("admin")) {
Admin.authenticated=true;
return "success";
} else {
Admin.authenticated=false;
return "failure";
}
}
}
and this is the main.xhtml:
<?xml version="1.0" encoding="UTF-8" ?>
<ui:composition template="template.xhtml"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<ui:define name="content">
<c:if test="#{admin.authenticated == false}">
// update Admin.authenticate to false
<meta http-equiv="refresh" content="0;URL=login.xhtml" />
</c:if>
<h1>Statistics</h1>
<div style="margin:10px">
<h:panelGrid columns="3">
Advertisers:
<h:outputText value="#{stats.advertisers}"/>
<h:outputText value=""/>
Publishers:
<h:outputText value="#{stats.publishers}"/>
<h:outputText value=""/>
Campaigns:
<h:outputText value="#{stats.campaigns}"/>
<h:outputText value="(#{stats.activeCampaigns} active)"/>
Banners:
<h:outputText value="#{stats.banners}"/>
<h:outputText value="(#{stats.activeBanners} active)"/>
Games:
<h:outputText value="#{stats.games}"/>
<h:outputText value="(#{stats.activeGames} active)"/>
</h:panelGrid>
</div>
</ui:define>
</ui:composition>
Two questions:
in the jstl 'if' ,I get : "Property 'authenticated' not found on
type com.pkg.name.Admin"
How can I update Admin.authenticate to false from the xhtml file(sorry for the lame question, i'm really new to jsf and web dev in general)
is it good practice to use this static variable? (like an instance of the session variable)
According to me the correct and cleaner way to implement login/logout is to create a filter and apply it to the urls that should be protected(e.g. /admin/*).
If the user sucessfully logs in load his details in session bean. When the user requests a protected page the filter runs first. In the filter get the session from request and call its getAttribute method to get the session bean(jsf stores the session scoped beans as session attributes). If you get the bean object then he is logged in else if you get null he is not authorized and you can redirect him to login page.
For logout you can just call invalidate on the session and all the session scoped attributes will be destroyed.
A working example will be like following:
The SessionScoped bean which will save login information:
UserBean.java
#ManagedBean
#SessionScoped
class UserBean implements Serializable{
private User user;
//getter/setter for user
}
LoginBean.java
#ManagedBean
class LoginBean
{
#ManagedProperty(value="#{userBean}")
private UserBean userBean;
public UserBean getUserBean(){
return userBean;
}
public void setUserBean(UserBean userBean){
this.userBean=userBean;
}
private String username,password;
//getter and setter for username,password
public String checkLogin(){
//check database for user
if(user!=null){
userBean.setUser(user);
}
//...
}
}
LoginFilter.java- We apply this filter to url pattern: /admin/*
#WebFilter("/admin/*")
class LoginFilter implements Filter{
#Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
HttpSession session=((HttpServletRequest)request).getSession();
userBean userBean=(userBean)session.getAttribute("userBean");
if(userBean!=null){
User user=userBean.getUser();
if(user==null){
((HttpServletResponse)response).sendRedirect("login.jsf");
}
else
chain.doFilter(request, response);
}
else
((HttpServletResponse)response).sendRedirect("login.jsf");
}
public void init(FilterConfig fc){}
public void destroy(){}
}
login.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:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head><title>Login To Admin Panel</title>
</h:head>
<h:body>
<h:form>
Username : <h:inputText value="#{loginBean.username}"/>
Password : <h:inputSecret value="#{loginBean.password}"/>
<h:commandButton value="Login" action="#{loginBean.checkLogin}" />
</h:form>
</h:body>
</html>
For log out you can simply call session.invalidate() which will destroy the session along with any session scoped attributes.
This way you don't have to write conditional jstl tags to determine whether the use is logged in or not.
Hope this helps.
I'm starting my first steps in JSF.
I've already read this link
http://docs.oracle.com/javaee/6/tutorial/doc/bnawq.html#bnaww
in regards to map initialization.
The problem is, I want to populate my map with values residing in a file.
How can I do that?
I've tried not using faces-config.xml and calling a support method in the bean's constructor, but my select list box isn't populated.
My bean class:
#ManagedBean
public class ADGroupListBean {
private static final String WITH_ACCESS = "D:\\workspace\\AccessControl\\permissions.txt";
private static final String WITHOUT_ACCESS = "D:\\workspace\\AccessControl\\noPermissions.txt";
private Map<String,String> withAccess, withoutAccess;
private LDAPQueries queries;
public ADGroupListBean(){
withAccess = new LinkedHashMap<String, String>();
withoutAccess = new LinkedHashMap<String, String>();
queries = new LDAPQueries();
initList(WITH_ACCESS, withAccess);
initList(WITHOUT_ACCESS, withoutAccess);
}
private void initList(String filename, Map<String,String> list) {
File f = new File(filename);
if ( !f.exists() && f.getAbsolutePath().equals(WITHOUT_ACCESS) )
{
queries.queryAllGroups(WITHOUT_ACCESS);
}
try
{
Scanner sc = new Scanner(f);
while (sc.hasNext())
{
String group = sc.nextLine();
list.put(group, group);
}
}catch (IOException e) {
e.printStackTrace();
}
}
// public void populateList() {
//
//
// }
public Map<String,String> getWithAccess() {
return withAccess;
}
public Map<String,String> getWithoutAccess() {
return withoutAccess;
}
public void setWithoutAccess(Map<String,String> withoutAccess) {
this.withoutAccess = withoutAccess;
}
public void setwithAccess(Map<String,String> withAccess) {
this.withAccess = withAccess;
}
public void test() {
System.out.println("workssssssssssssssssss");
}
}
As for my JSF file, it is like this:
<!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>Your Title Here</title>
</h:head>
<h:body>
<h1>Your Heading Here</h1>
<h:form>
<h:selectOneMenu value="teste">
<f:selectItem itemLabel="" itemValue="" />
<f:selectItems value="#{ADGroupListBean.withoutAccess}" />
</h:selectOneMenu>
</h:form>
</h:body>
</html>
I've tested the bean's functions in a test application, and everything works fine.
So my guess is the bean isn't instantiated?
Regards,
Nuno.