NotSerializableException on serialization of objects currently shown by Vaadin

Question

I get a NotSerializableException when I want to serialize an Object that is currently shown by Vaadin.

The structure is like this:

Vaadin UI <--- serialize /

Answer 1

Spring components are usually not serializable (or should not be serialized at all).

Injecting Spring components in Vaadin components linked to a Vaadin UI is tricky because them should be declared as transient and re-populated after deserialization..

I wrote a small library jdal-aop to ease the process, using spring-aop serializable proxies.

for example

public class MainLayout extends VerticalLayout {

    @Autowired
    @SerializableProxy  // make this Dao serializable
    private CustomerDao customerDao;
} 

It could be useful for you.