4 ways to pass parameter from JSF page to backing bean

4 ways to pass parameter from JSF page to backing bean

There are 4 ways to pass a parameter value from JSF page to backing bean :

1. Method expression (JSF 2.0)
2. f:param
3. f:attribute
4. f:setPropertyActionListener

Let see example one by one :

or to BackingBean as follows

FacesContext context = FacesContext.getCurrentInstance();
Map requestMap = context.getExternalContext().getRequestParameterMap();
String value= (String)requestMap.get("action");

From Other Resources :