Problem with localization (MyFaces and JSTL)

[Piotr Cierny]

I have created a simple application that uses 2 languages - english and polish. I want to set locale with html link for myfaces and jstl tags.
The problem is that when i press the link, it only changes the messages outputed by jsf tags. The jstl messages remain unchanged.
The locale is changing (checked with c:out) but messages aren`t.
The funniest thing happends when i change language to english and check the chceckbox - All messages change to english and the jstl locale variable is emptied (c:out doesn`t write anything out).

This example worked with jsf1.1.5 but it doesn`t work with jsf 1.2.
Can any one tell me why??

I enclose the code of this example:
welcome.jsp

   <%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%&rt;
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%&rt;
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%&rt;
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%&rt;
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%&rt;
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%&rt;
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%&rt;
<%@taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml"%&rt;
 

 
<c:if test="${param.lang!=null}"&rt;
<c:set var="langExt" value="${param.lang}" /&rt;
<fmt:setLocale value="${langExt}" scope="session" /&rt;
<c:if test="${langExt=='en'}"&rt;
<%javax.faces.context.FacesContext.getCurrentInstance().getViewRoot().setLocale(new java.util.Locale("en"));%&rt;
</c:if&rt;
<c:if test="${langExt=='pl'}"&rt;
<%javax.faces.context.FacesContext.getCurrentInstance().getViewRoot().setLocale(new java.util.Locale("pl"));%&rt;
</c:if&rt;
</c:if&rt;
 
<f:view&rt; 
<f:loadBundle basename="resources.MessageResources" var="key" /&rt;
<fmt:setBundle basename="resources.MessageResources" var="lang"scope="session" /&rt;
 
<HTML&rt;
<HEAD&rt;
<TITLE&rt;test</TITLE&rt;
</HEAD&rt;
<body&rt;
<h1&rt;<fmt:message key="login.choose" bundle="${lang}" /&rt;</h1&rt;
<a href="welcome.faces?lang=en"&rt; <fmt:message key="login.english"
bundle="${lang}" /&rt; </a&rt;
 
 
<a href="welcome.faces?lang=pl"&rt; <fmt:message key="login.polish"
bundle="${lang}" /&rt;</A&rt;
<h:form&rt;
<h:panelGrid columns="2"&rt;
<f:verbatim&rt;
<h:outputText value="#{key['user.surname']}" /&rt;
</f:verbatim&rt;
<h:inputText id="surname" value="#{Userbean.lastName}"/&rt;
</h:panelGrid&rt;

<h:panelGrid columns="3"&rt;
<h:commandButton action="#{Userbean.submit}" value="Login"
disabled="#{!Userbean.selectBooleanCheckbox}" /&rt;
<h:selectBooleanCheckbox value="#{Userbean.selectBooleanCheckbox}"
id="selectBooleanCheckbox"
valueChangeListener="#{Userbean.checkboxChanged}" immediate="true"
onklick="submit()" /&rt;
<h:outputText value="enable submit button" /&rt;
</h:panelGrid&rt;
</h:form&rt;
 
</body&rt;
</html&rt;
</f:view&rt; 

User.java

  
package coreservlets;
import java.io.Serializable;
import javax.faces.context.FacesContext;
import javax.faces.event.ValueChangeEvent;
public class User implements Serializable{
private static final long serialVersionUID = 7254347251709574230L;
private String lastName;
private boolean selectBooleanCheckbox = false;

public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}

public boolean isSelectBooleanCheckbox() {
return selectBooleanCheckbox;
}

public void setSelectBooleanCheckbox(boolean selectBooleanCheckbox) {
this.selectBooleanCheckbox = selectBooleanCheckbox;
}

public String submit(){ 
 return null;    
}

public void checkboxChanged(ValueChangeEvent valueChangeEvent) {
if (((Boolean)valueChangeEvent.getNewValue()).booleanValue() == false){
setSelectBooleanCheckbox(false);
}
else{
setSelectBooleanCheckbox(true);
}
FacesContext.getCurrentInstance().renderResponse();
}
}

faces-config.xml

  <?xml version="1.0" encoding="UTF-8"?&rt;
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee <a href="http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"&rt;" target="_blank" rel="nofollow">http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"&rt;</a>
 
<managed-bean&rt;
<managed-bean-name&rt;Userbean</managed-bean-name&rt;
<managed-bean-class&rt;coreservlets.User</managed-bean-class&rt;
<managed-bean-scope&rt;session</managed-bean-scope&rt;
</managed-bean&rt;
<navigation-rule /&rt;
<application&rt;
<message-bundle&rt;resources.MessageResources</message-bundle&rt;
<locale-config&rt;
<supported-locale&rt;pl</supported-locale&rt;
<supported-locale&rt;en</supported-locale&rt;
</locale-config&rt;
</application&rt;
</faces-config&rt;

I`ve tried to download new jstl.jar and standard.jar, add tlds and declarations in web.xml but it didn`t help.

If anyone knows answer to this mystery please help.

[Piotr Cierny]

This is my first post. Sorry for bad code. here is a good one.

welcome.jsp

   <%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%>
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>
<%@taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml"%>
 

 
<c:if test="${param.lang!=null}">
<c:set var="langExt" value="${param.lang}" />
<fmt:setLocale value="${langExt}" scope="session" />
<c:if test="${langExt=='en'}">
<%javax.faces.context.FacesContext.getCurrentInstance().getViewRoot().setLocale(new java.util.Locale("en"));%>
</c:if>
<c:if test="${langExt=='pl'}">
<%javax.faces.context.FacesContext.getCurrentInstance().getViewRoot().setLocale(new java.util.Locale("pl"));%>
</c:if>
</c:if>
 
<f:view> 
<f:loadBundle basename="resources.MessageResources" var="key" />
<fmt:setBundle basename="resources.MessageResources" var="lang"scope="session" />
 
<HTML>
<HEAD>
<TITLE>test</TITLE>
</HEAD>
<body>
<h1><fmt:message key="login.choose" bundle="${lang}" /></h1>
<a href="welcome.faces?lang=en"> <fmt:message key="login.english"
bundle="${lang}" /> </a>
 
 
<a href="welcome.faces?lang=pl"> <fmt:message key="login.polish"
bundle="${lang}" /></A>
<h:form>
<h:panelGrid columns="2">
<f:verbatim>
<h:outputText value="#{key['user.surname']}" />
</f:verbatim>
<h:inputText id="surname" value="#{Userbean.lastName}"/>
</h:panelGrid>

<h:panelGrid columns="3">
<h:commandButton action="#{Userbean.submit}" value="Login"
disabled="#{!Userbean.selectBooleanCheckbox}" />
<h:selectBooleanCheckbox value="#{Userbean.selectBooleanCheckbox}"
id="selectBooleanCheckbox"
valueChangeListener="#{Userbean.checkboxChanged}" immediate="true"
onklick="submit()" />
<h:outputText value="enable submit button" />
</h:panelGrid>
</h:form>
 
</body>
</html>
</f:view> 

User.java

  
package coreservlets;
import java.io.Serializable;
import javax.faces.context.FacesContext;
import javax.faces.event.ValueChangeEvent;
public class User implements Serializable{
private static final long serialVersionUID = 7254347251709574230L;
private String lastName;
private boolean selectBooleanCheckbox = false;

public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}

public boolean isSelectBooleanCheckbox() {
return selectBooleanCheckbox;
}

public void setSelectBooleanCheckbox(boolean selectBooleanCheckbox) {
this.selectBooleanCheckbox = selectBooleanCheckbox;
}

public String submit(){ 
 return null;    
}

public void checkboxChanged(ValueChangeEvent valueChangeEvent) {
if (((Boolean)valueChangeEvent.getNewValue()).booleanValue() == false){
setSelectBooleanCheckbox(false);
}
else{
setSelectBooleanCheckbox(true);
}
FacesContext.getCurrentInstance().renderResponse();
}
}

faces-config.xml

  <?xml version="1.0" encoding="UTF-8"?>
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee <a href="http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">" target="_blank" rel="nofollow">http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"></a>
 
<managed-bean>
<managed-bean-name>Userbean</managed-bean-name>
<managed-bean-class>coreservlets.User</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
<navigation-rule />
<application>
<message-bundle>resources.MessageResources</message-bundle>
<locale-config>
<supported-locale>pl</supported-locale>
<supported-locale>en</supported-locale>
</locale-config>
</application>
</faces-config>

[Ryan Lubke]

This was cross-posted in the sun forums. I've already answered there.

Originally posted by Piotr Cierny:
I have created a simple application that uses 2 languages - english and polish. I want to set locale with html link for myfaces and jstl tags.
The problem is that when i press the link, it only changes the messages outputed by jsf tags. The jstl messages remain unchanged.
The locale is changing (checked with c:out) but messages aren`t.
The funniest thing happends when i change language to english and check the chceckbox - All messages change to english and the jstl locale variable is emptied (c:out doesn`t write anything out).

This example worked with jsf1.1.5 but it doesn`t work with jsf 1.2.
Can any one tell me why??

I enclose the code of this example:
welcome.jsp

   <%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%&rt;
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%&rt;
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%&rt;
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%&rt;
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%&rt;
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%&rt;
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%&rt;
<%@taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml"%&rt;
 
 
 
<c:if test="${param.lang!=null}"&rt;
<c:set var="langExt" value="${param.lang}" /&rt;
<fmt:setLocale value="${langExt}" scope="session" /&rt;
<c:if test="${langExt=='en'}"&rt;
<%javax.faces.context.FacesContext.getCurrentInstance().getViewRoot().setLocale(new java.util.Locale("en"));%&rt;
</c:if&rt;
<c:if test="${langExt=='pl'}"&rt;
<%javax.faces.context.FacesContext.getCurrentInstance().getViewRoot().setLocale(new java.util.Locale("pl"));%&rt;
</c:if&rt;
</c:if&rt;
 
<f:view&rt; 
<f:loadBundle basename="resources.MessageResources" var="key" /&rt;
<fmt:setBundle basename="resources.MessageResources" var="lang"scope="session" /&rt;
 
<HTML&rt;
<HEAD&rt;
<TITLE&rt;test</TITLE&rt;
</HEAD&rt;
<body&rt;
<h1&rt;<fmt:message key="login.choose" bundle="${lang}" /&rt;</h1&rt;
<a href="welcome.faces?lang=en"&rt; <fmt:message key="login.english"
bundle="${lang}" /&rt; </a&rt;
 
 
<a href="welcome.faces?lang=pl"&rt; <fmt:message key="login.polish"
bundle="${lang}" /&rt;</A&rt;
<h:form&rt;
<h:panelGrid columns="2"&rt;
<f:verbatim&rt;
<h:outputText value="#{key['user.surname']}" /&rt;
</f:verbatim&rt;
<h:inputText id="surname" value="#{Userbean.lastName}"/&rt;
</h:panelGrid&rt;

<h:panelGrid columns="3"&rt;
<h:commandButton action="#{Userbean.submit}" value="Login"
disabled="#{!Userbean.selectBooleanCheckbox}" /&rt;
<h:selectBooleanCheckbox value="#{Userbean.selectBooleanCheckbox}"
id="selectBooleanCheckbox"
valueChangeListener="#{Userbean.checkboxChanged}" immediate="true"
onklick="submit()" /&rt;
<h:outputText value="enable submit button" /&rt;
</h:panelGrid&rt;
</h:form&rt;
 
</body&rt;
</html&rt;
</f:view&rt; 

User.java

  
package coreservlets;
import java.io.Serializable;
import javax.faces.context.FacesContext;
import javax.faces.event.ValueChangeEvent;
public class User implements Serializable{
private static final long serialVersionUID = 7254347251709574230L;
private String lastName;
private boolean selectBooleanCheckbox = false;

public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}

public boolean isSelectBooleanCheckbox() {
return selectBooleanCheckbox;
}

public void setSelectBooleanCheckbox(boolean selectBooleanCheckbox) {
this.selectBooleanCheckbox = selectBooleanCheckbox;
}

public String submit(){ 
 return null;    
}

public void checkboxChanged(ValueChangeEvent valueChangeEvent) {
if (((Boolean)valueChangeEvent.getNewValue()).booleanValue() == false){
setSelectBooleanCheckbox(false);
}
else{
setSelectBooleanCheckbox(true);
}
FacesContext.getCurrentInstance().renderResponse();
}
}

faces-config.xml

  <?xml version="1.0" encoding="UTF-8"?&rt;
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee <a href="http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"&rt;" target="_blank" rel="nofollow">http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"&rt;</a>
 
<managed-bean&rt;
<managed-bean-name&rt;Userbean</managed-bean-name&rt;
<managed-bean-class&rt;coreservlets.User</managed-bean-class&rt;
<managed-bean-scope&rt;session</managed-bean-scope&rt;
</managed-bean&rt;
<navigation-rule /&rt;
<application&rt;
<message-bundle&rt;resources.MessageResources</message-bundle&rt;
<locale-config&rt;
<supported-locale&rt;pl</supported-locale&rt;
<supported-locale&rt;en</supported-locale&rt;
</locale-config&rt;
</application&rt;
</faces-config&rt;

I`ve tried to download new jstl.jar and standard.jar, add tlds and declarations in web.xml but it didn`t help.

If anyone knows answer to this mystery please help.

[Piotr Cierny]

I fixed the problem by adding locale="#{facesContext.viewRoot.locale}" to f:view tag.

But could anyone explain me why this does`t work without specifying the locale in the view tag?

Shouldn`t the fmt:setLocale tag set locale for jstl tags only using parameter given in URL