Cannot reset buffer after response has been committed JspViewDeclarationLanguageStrategy
Hi, i get following error if i try to open a page, which does not exist: Cannot reset buffer after response has been committed As far as i can see, the JspViewDeclarationLanguageStrategy handles the null viewId and if i return false in #isHandle, it works without problems. Why JspViewDeclarationLanguageStrategy handles also the null viewId? I looked at the code and org.apache.myfaces.SUPPORT_JSP_AND_FACES_EL should disable the JspViewDeclarationLanguageStrategy, right? If i set this context param to false, i get follwing exception on startup: An error occured while initializing MyFaces: No javax.el.ExpressionFactory found. Please provide context-param in web.xml: org.apache.myfaces.EXPRESSION_FACTORY Why is it required to manually set the ExpressionFactory? We use Jetty on localhost and JUEL/Tomcat on our servers. Thanks! Thomas
Re: Cannot reset buffer after response has been committed JspViewDeclarationLanguageStrategy
Ah, sorry! I got another exception now: javax.faces.FacesException: Cannot find a valid PDL for view id null. So the third question is, isn't there any viewId == null check? 2012/7/25 Thomas Andraschko zoi...@googlemail.com Hi, i get following error if i try to open a page, which does not exist: Cannot reset buffer after response has been committed As far as i can see, the JspViewDeclarationLanguageStrategy handles the null viewId and if i return false in #isHandle, it works without problems. Why JspViewDeclarationLanguageStrategy handles also the null viewId? I looked at the code and org.apache.myfaces.SUPPORT_JSP_AND_FACES_EL should disable the JspViewDeclarationLanguageStrategy, right? If i set this context param to false, i get follwing exception on startup: An error occured while initializing MyFaces: No javax.el.ExpressionFactory found. Please provide context-param in web.xml: org.apache.myfaces.EXPRESSION_FACTORY Why is it required to manually set the ExpressionFactory? We use Jetty on localhost and JUEL/Tomcat on our servers. Thanks! Thomas
Re: Cannot reset buffer after response has been committed JspViewDeclarationLanguageStrategy
I created an issue after analzing the original problem: https://issues.apache.org/jira/browse/MYFACES-3587 Should i also create an issue because disable SUPPORT_JSP_AND_FACES_EL requires to set the EXPRESSION_FACTORY? Or is it be design? 2012/7/25 Thomas Andraschko zoi...@googlemail.com Ah, sorry! I got another exception now: javax.faces.FacesException: Cannot find a valid PDL for view id null. So the third question is, isn't there any viewId == null check? 2012/7/25 Thomas Andraschko zoi...@googlemail.com Hi, i get following error if i try to open a page, which does not exist: Cannot reset buffer after response has been committed As far as i can see, the JspViewDeclarationLanguageStrategy handles the null viewId and if i return false in #isHandle, it works without problems. Why JspViewDeclarationLanguageStrategy handles also the null viewId? I looked at the code and org.apache.myfaces.SUPPORT_JSP_AND_FACES_EL should disable the JspViewDeclarationLanguageStrategy, right? If i set this context param to false, i get follwing exception on startup: An error occured while initializing MyFaces: No javax.el.ExpressionFactory found. Please provide context-param in web.xml: org.apache.myfaces.EXPRESSION_FACTORY Why is it required to manually set the ExpressionFactory? We use Jetty on localhost and JUEL/Tomcat on our servers. Thanks! Thomas
JSF Facescomponent change reference value
I pass a string reference to my composite component with the value =
ORIGINAL VALUE, then my composite component have a button, this button
change the original value to = HERE IM SETTING A NEW VALUE, then when
i press my button in my normal page: page.xhtml for review it,the
value still without any change (ORIGINAL VALUE), why this happend, if
my string is pass as a reference because is an object, what im doing
wrong?
Resume:
1. I pass a String (as attribute to my composite component) with the
value: ORIGINAL VALUE
2. Then in the composite component i get this attribute and change it
to =HERE IM SETTING A NEW VALUE
3. When i review the value in page.xhtml i see again ORIGINAL VALUE
(not expected)
4. If i review my value in my composite component i have:HERE IM
SETTING A NEW VALUE
I try to set my Bean to RequestScoped, ViewAccessScoped and
SessionScoped and the problem is the same.
Here is an example:
My composite component: myComponent.xhtml
ui:component xmlns=http://www.w3.org/1999/xhtml;
xmlns:p=http://primefaces.org/ui;
xmlns:cc=http://java.sun.com/jsf/composite;
xmlns:ui=http://java.sun.com/jsf/facelets;
xmlns:h=http://java.sun.com/jsf/html;
cc:interface componentType=myComponent
cc:attribute name=myString type=java.lang.String/
/cc:interface
cc:implementation
p:commandButton value=Change Value
actionListener=#{cc.changeStringValue}/
/cc:implementation
/ui:component
My FacesComponent Class:
@FacesComponent(value=myComponent)
public class MyComponent extends UINamingContainer {
public void changeStringValue(ActionEvent e){
String originalValue = (String) getAttributes().get(myString);
//Here i change the value
originalValue = HERE IM SETTING A NEW VALUE;
}
}
My page.xhtml
h:body
h:form id=myform
test:myComponent myString=#{myBean.myString}/
p:commandButton value=Review change
actionListener=#{myBean.showValue}/
h/form
/h:body
ManagedBean:
@Named
@ViewAccessScoped
public void MyBean implements Serializable{
public String myString = ORIGINAL VALUE;
public void showValue(ActionEvent e){
//why here i see ORIGINAL VALUE if my component change the reference value??
System.out.println(Value: +myString);
}
//setters and getters...
}
What im doing wrong???
