public Object instantiate(RootBeanDefinition beanDefinition, String beanName, BeanFactory owner) {
// Don't override the class with CGLIB if no overrides.
if (beanDefinition.getMethodOverrides().isEmpty()) {
Class clazz = beanDefinition.getBeanClass();
if (clazz.isInterface()) {
throw new BeanInstantiationException(clazz, "Specified class is an interface");
}
try {
Constructor constructor = clazz.getDeclaredConstructor((Class[]) null);
return BeanUtils.instantiateClass(constructor, null);
} catch (Exception ex) {
throw new BeanInstantiationException(clazz, "No default constructor found", ex);
}
} else {
// Must generate CGLIB subclass.
return instantiateWithMethodInjection(beanDefinition, beanName, owner);
}
}
