aa....aa

aa....aa: Stack trace of the exception

Description

The stack trace of the exception thrown during the serialization processing of the attribute information of the HTTP session will be output in each line.

Action

Determine the cause of failure in the serialization based on the contents of the stack trace, and then take either of the following actions:

• Remove the erroneous object from the attributes of the HTTP session.
• Change the Web application, and then remove the cause of the error from the object that failed to be serialized.

Take action based on the following causes of the failure in serialization:

• The object referenced from the object of the attribute that failed to be serialized was not from a serializable class.
• The writeObject(java.io.ObjectOutputStream out) method is implemented, and an exception occurred during the serialization.