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Is there a way to access JSF managed beans from a servlet?
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Managed Bean is a regular Java Bean class registered with JSF. In other words, Managed Beans is a Java bean managed by JSF framework. Managed bean contains the getter and setter methods, business logic, or even a backing bean (a bean contains all the HTML form value). Managed beans works as Model for UI component.
Managed beans are container-managed objects with minimal supported services, such as resource injection, life cycle callbacks and interceptors, and have the following characteristics: A managed bean does not have its own component-scoped java:comp namespace.
1) BB: A backing bean is any bean that is referenced by a form. MB: A managed bean is a backing bean that has been registered with JSF (in faces-config. xml) and it automatically created (and optionally initialized) by JSF when it is needed.
FacesContext context = FacesContext. getCurrentInstance(); ELContext elContext = context. getELContext(); ProfileBean profileBean = (ProfileBean) elContext.
In a Servlet, you can get request scoped beans by:
Bean bean = (Bean) request.getAttribute("beanName");
and session scoped beans by:
Bean bean = (Bean) request.getSession().getAttribute("beanName);
and application scoped beans by:
Bean bean = (Bean) getServletContext().getAttribute("beanName");
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