As suggested by a user time ago in another question, I need to inject a bean in another bean.
So, i do the following :
@ManagedBean
@RequestScoped
public class Articles {
private String selectedMenu;
@ManagedProperty(value="#{user}")
private UserManager user;
@PostConstruct
public void init() {
if(selectedMenu==null || selectedMenu.trim().isEmpty()) {
this.selectedMenu="0";
}
}
// now here i should access to user.methods
// getter and setter
}
In fact, i can't access to UserManager data. I get these error :
BROWSER malformedXML: INVALID_STATE_ERR: Dom Exception 11
SERVER LOG
30-nov-2010 15.36.58 javax.faces.component.UIViewRoot$ViewMap put
AVVERTENZA: Setting non-serializable attribute value into ViewMap: (key: profileSelector, value class: model.ProfileSelector)
30-nov-2010 15.36.59 com.sun.faces.mgbean.BeanManager preProcessBean
GRAVE: JSF will be unable to create managed bean articles when it is requested. The following problems where found:
- Property user for managed bean articles does not exist. Check that appropriate getter and/or setter methods exist.
30-nov-2010 15.36.59 com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback visit
GRAVE: com.sun.faces.mgbean.ManagedBeanCreationException: Unable to create managed bean articles. The following problems were found:
- Property user for managed bean articles does not exist. Check that appropriate getter and/or setter methods exist.
If i comment @ManagedProperty(value="#{user}")
and private UserManager user;
than i don't see any error. So that's the problem. What am I wrong?
Cheers
malformedXML: INVALID_STATE_ERR: Dom Exception 11
This XML error indicates an error in your view (the XHTML), not in the bean. I don't understand why this error occurred, but likely you've a pretty complex component tree with several rendered
attributes of which one is depending on the user
property which caused a wrong state in the XML tree in the client side.
As to the server logs:
AVVERTENZA: Setting non-serializable attribute value into ViewMap: (key: profileSelector, value class: model.ProfileSelector)
This does not necessarily harm, but to fix it, you need to let the class implement java.io.Serializable
.
public class ProfileSelector implements Serializable {}
This way the server will be able to transfer the instance over network and/or store the instance on harddisk instead of in memory whenever necessary (when the server reboots or is placed in a server cluster).
30-nov-2010 15.36.59 com.sun.faces.mgbean.BeanManager preProcessBean GRAVE: JSF will be unable to create managed bean articles when it is requested. The following problems where found: - Property user for managed bean articles does not exist. Check that appropriate getter and/or setter methods exist.
This is self-explaining as well. Ensure that there are proper getter/setter methods for the property user
of the managed bean with name articles
.
@ManagedBean
@RequestScoped
public class Articles {
@ManagedProperty(value="#{user}")
private UserManager user;
public UserManager getUser() {
return user;
}
public void setUser(UserManager user) {
this.user = user;
}
}
You can if necessary let your IDE autogenerate them. In Eclipse, check the Source section in rightclick context menu (Alt+Shift+S).
30-nov-2010 15.36.59 com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback visit GRAVE: com.sun.faces.mgbean.ManagedBeanCreationException: Unable to create managed bean articles. The following problems were found: - Property user for managed bean articles does not exist. Check that appropriate getter and/or setter methods exist.
This has the same problem cause.