How to call a method in the bean when a JSF page is requested?

Question

How to call a method in the bean when a JSF page is requested? Example I have a JSF page "MyPage.jsf" and its backend bean "MyBean" and it has a method "myMethod()". Is it possible to call the MyBean.myMethod() when MyPage.jsf is requested?

Answer 1

If you have added MyBean in the faces-config.xml as a managed bean:

<managed-bean>
  <managed-bean-name>myBean</managed-bean-name>
  <managed-bean-class>MyBean</managed-bean-class>
  <managed-bean-scope>request</managed-bean-scope>
</managed-bean>

When you use the Bean in your MyPage.jsf example:

<h:outputText value="#{myBean.mytext}"/>

The default constructor of MyBean will automatically be called. Execute myMethod() from the default constructor.

public MyBean() {
  this.myMethod();
}

And it will get called on page load.