hibernate/hibernate-orm · error · HibernateException

Unable to deserialize proxy [%s, %s]; could not locate id ge

Error message

Unable to deserialize proxy [%s, %s]; could not locate id getter method [%s] on entity class [%s]

What it means

Error "Unable to deserialize proxy [%s, %s]; could not locate id getter method [%s] on entity class [%s]" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/proxy/pojo/bytebuddy/ByteBuddyProxyHelper.java:144

			return hibernateProxy;
		}
		catch (Throwable t) {
			throw new HibernateException( "Bytecode enhancement failed for entity '"
					+ proxy.getEntityName() + "'", t );
		}
	}

	private static Method resolveIdGetterMethod(SerializableProxy serializableProxy) {
		if ( serializableProxy.getIdentifierGetterMethodName() == null ) {
			return null;
		}

		try {
			return serializableProxy.getIdentifierGetterMethodClass()
					.getDeclaredMethod( serializableProxy.getIdentifierGetterMethodName() );
		}
		catch (NoSuchMethodException e) {
			throw new HibernateException(
					String.format(
							Locale.ENGLISH,
							"Unable to deserialize proxy [%s, %s]; could not locate id getter method [%s] on entity class [%s]",
							serializableProxy.getEntityName(),
							serializableProxy.getId(),
							serializableProxy.getIdentifierGetterMethodName(),
							serializableProxy.getIdentifierGetterMethodClass()
					)
			);
		}
	}

	private static Method resolveIdSetterMethod(SerializableProxy serializableProxy) {
		if ( serializableProxy.getIdentifierSetterMethodName() == null ) {
			return null;
		}

		try {

View on GitHub (pinned to fad1729dce)

Solutions

1. Define an id getter matching the mapped identifier property on the entity class.
2. Ensure serialization/deserialization uses the same entity mapping.

When it happens

Trigger: A name referenced in a mapping, query, or configuration cannot be resolved at runtime.

Common situations: Typos in entity/attribute/mapping names, missing mappings, or refactoring without updating references.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/623c4c7f2c3a81bc. Report an issue: GitHub.