Spring-managed request scoped bean constructor called twice on press of JSF command button

Question

I am using JSF-Spring integration, I am calling a Spring-managed request scoped bean method from the JSP using JSF <h:commandButton> . One thing I can't understand is that the constructor of the Spring bean is called twice. Why does this happen?

Here is the Spring managed bean:

@org.springframework.stereotype.Component
@org.springframework.context.annotation.Scope("request")
public class MyAction implements java.io.Serializable {

    public MyAction(){
        System.out.println("inside request scoped bean");
    }

Here is the JSF view:

<h:commandButton value="add" action="#{MyAction.add}" />

Answer 1

Can you debug to trace where the constructor is getting called from ? Pretty sure one of the calls is it is being tried to initialize from some other place and one from the application / ui

Answer 2

我得到了答案，由于Spring的cglib代理机制，构造函数被调用了两次。