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Non-serializable object bound to 'HttpSession'

Reports objects of classes not implementing used as arguments to javax.servlet.http.HttpSession.setAttribute() or javax.servlet.http.HttpSession.putValue().

Such objects will not be serialized if the HttpSession is passivated or migrated, and may result in difficult-to-diagnose bugs.

This inspection assumes objects of the types java.util.Collection and java.util.Map to be Serializable, unless type parameters are non-Serializable.


void foo(HttpSession session) { session.setAttribute("foo", new NonSerializable()); } static class NonSerializable {}

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Serialization issues


By default bundled with

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Java, 241.18072

Last modified: 18 June 2024