JSF 2.x Tip of the Day: How Do I Remove a @ManagedBean ?

A colleague asked me how to remove a @SessionScoped @ManagedBean from a JSF application. We both thought about using the code below, and in fact it works, but it left me feeling that this was too specific.

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public void removeSessionBean(final String beanName) {     FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove(beanName); }

I thought a better approach would be to just "find" the bean and set it to null. Using an ELResolver I thought would be better since I could just look for a bean in a more general way.

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public void removeManagedBean(final String beanName) {     FacesContext fc = FacesContext.getCurrentInstance();     fc.getELContext().getELResolver().setValue(fc.getELContext(), null, beanName, null); }

References

Here are some articles that have some additional ideas. The comment in the first article turns out to be the same method we came up with for removing it from a session.

• How-to get or remove a jsf backing bean from session?
• Replacing deprecated ValueBindung stuff from JSF with ELResolver