When I set required="true"
in a <h:inputText>
, it still allows blank spaces. I have been trying to modify the jsf-api.jar
but I could not understand how to generate new a JAR, so I tried to modify the isEmpty()
method from UIInput
class and compile it, open the jsf-api.jar
and replace it with the new one, but it did not work.
What I need is to do trim()
when the user writes in a <h:inputText>
to do not allow blank spaces. How can I achieve this?
If you want to download the jsf-api.jar
resource, you can do it, just read how to at: http://javaserverfaces.java.net/checkout.html.
That's normal and natural behaviour and not JSF specific. A blank space may be perfectly valid input. The required="true"
only kicks in on empty inputs, not in filled inputs. In JSF you can however just create a Converter
for String
class to automatically trim the whitespace.
@FacesConverter(forClass=String.class)
public class StringTrimmer implements Converter {
@Override
public Object getAsObject(FacesContext context, UIComponent component, String value) {
return value != null ? value.trim() : null;
}
@Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
return (String) value;
}
}
Put this class somewhere in your project. It'll be registered automatically thanks to @FacesConverter
and invoked automatically for every String
entry thanks to forClass=String.class
.
No need to hack the JSF API/impl. This makes no sense.