hibernate/hibernate-orm · error · HibernateException

cannot find an accessor [%s] on type [%s]

Error message

cannot find an accessor [%s] on type [%s]

What it means

Error "cannot find an accessor [%s] on type [%s]" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/bytecode/internal/bytebuddy/BytecodeProviderImpl.java:399

		if ( setterNames.length != length || getterNames.length != length ) {
			throw new HibernateException( "bad number of accessors" );
		}

		final Class<?>[] getParam = new Class[0];
		for ( int i = 0; i < length; i++ ) {
			if ( getterNames[i] != null ) {
				final Method getter = findAccessor( clazz, getterNames[i], getParam );
				if ( getter.getReturnType() != types[i] ) {
					throw new HibernateException( "wrong return type: " + getterNames[i] );
				}

				getters[i] = getter;
			}

			if ( setterNames[i] != null ) {
				setters[i] = ReflectHelper.setterMethodOrNullBySetterName( clazz, setterNames[i], types[i] );
				if ( setters[i] == null ) {
					throw new HibernateException(
							String.format(
									"cannot find an accessor [%s] on type [%s]",
									setterNames[i],
									clazz.getName()
							)
					);
				}
				else if ( isPrivate( setters[i].getModifiers() ) ) {
					throw new PrivateAccessorException( "private accessor [" + setterNames[i] + "]" );
				}
			}
		}
	}

	private static void findAccessors(
			Class<?> clazz,
			Map<String, PropertyAccess> propertyAccessMap,
			Member[] getters,

View on GitHub (pinned to fad1729dce)

Solutions

1. Ensure every persistent property has a matching getter/setter pair with consistent types; check for misnamed accessors after refactoring.

Example fix

Ensure every persistent property has a matching getter/setter pair with consistent types; check for misnamed accessors after refactoring.

When it happens

Trigger: Bytecode enhancement, proxy creation, or lazy interception is applied to an incompatible class or configuration.

Common situations: Build-time enhancement with module-system restrictions, mismatched Hibernate versions between build and runtime, or hibernate.bytecode.provider=none with a model that needs proxies.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/0f3a8efdb3714eb0. Report an issue: GitHub.