I'm trying to inject a ManagedBean in my FacesConverted the following way:
@ManagedBean
@RequestScoped
@FacesConverter(forClass
= Group.
class
)
public
class
GroupConverter
implements
Converter {
@ManagedProperty(
"#{groupService}"
)
private
GroupService groupService;
@Override
public
Group getAsObject(FacesContext context, UIComponent arg1,
String groupName) {
return
groupService.findGroupByName(groupName);
}
@Override
public
String getAsString(FacesContext arg0, UIComponent arg1, Object group) {
return
((Group) group).getName();
}
public
GroupService getGroupService() {
return
groupService;
}
public
void
setGroupService(GroupService groupService) {
this
.groupService =
groupService;
}
}
The problem is that groupService isn't being injected and I get a NullPointerEx. Shouldn't it be autowired automatically since it's also a ManagedBean? It all works when I change "getAsObject" to "return new Group();" obviously.
Any ideas?
?
The solution:
It is likely that you are not resolving the managed bean name .
@ManagedBean(name = "myConverter")
@RequestScoped
@FacesConverter(value = "myConverter")
public class MyConverter implements Converter {
?
For example, consider these two components:
<h:inputText converter="myConverter" value="#{foo.prop}" />
<h:inputText converter="#{myConverter}" value="#{bar.prop}" />
?
When the converter is set on the first component, it will be created by Application.createConverter . A converter is not a managed bean . The same rules apply if you match a converter by type .
In the second component, a value expression is used to return a class that implements
Converter
. This uses the usual managed bean mechanisms. In this case, the
@FacesConverter
annotation is irrelevant.
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