javax.faces.STATE_SAVING_METHOD可序列化

Question

I have a JSF and Spring integrated application. My Account Backing Bean class is with scope session and it is Serializable [as suggested here] . In my web.xml javax.faces.STATE_SAVING_METHOD value is 'server'. Everything works good still here.

[I have Backing bean, Service class and DAO class in layers.]

When I change the value of javax.faces.STATE_SAVING_METHOD to 'client' the application throws exception 'java.io.NotSerializableException' pointing to my service class. If I make the service class Serializable then the 'java.io.NotSerializableException' points to my DAO class. If I make the DAO class Serializable the application will work without issues.

However I think making the service class and DAO class Serializable is a not a good approach.

Looking for expert opinion.

Thanks in advance.

Answer 1

You should mark your service as transient in your account backing bean. This prevents serialization.

Example:

@RequestScoped
public class AccountBackingBean {

 @EJB
 private transient MyService myService;
 private String someValue;

}

See also:

• What does the keyword “transient” mean in Java? [closed]
• What is STATE_SAVING_METHOD parameter in JSF 2.0
• Why JSF saves the state of UI components on server?