WELD-000072 Managed bean declaring a passivating scope must be passivation capable

Question

I wrote a simple program in java web forms but i am receiving the following error:

WELD-000072 Managed bean declaring a passivating scope must be passivation capable. Bean: Managed Bean [class BeanPakage.DemoBeans] with qualifiers [@Any @Default @Named]

Can anyone tell me where this error comes from?

import javax.enterprise.context.SessionScoped; import javax.inject.Named;   @Named("DemoBeans") @SessionScoped public class DemoBeans {      private String name;      public String getName() {         return name;     }      public void setName(String name) {         this.name = name;     } } 

Answer 1

You can make your bean passivation capable by implementing the Serializable interface:

public class DemoBean implements Serializable { ... } 

Note that there are more requirements for being passivation capable. Refer to the Weld documentation for more information.

Answer 2

The error might remain even though the CDI bean is serializable:

WELD-000072 Managed bean declaring a passivating scope must be passivation capable 

Example class:

@Named @ConversationScoped public class TransactionMatchController implements Serializable {     ... } 

Make sure that all @Interceptors are seializable as well:

@Interceptor @Transactional public class TransactionInterceptor implements Serializable {     ... }