NoUniqueBeanDefinitionException: no qualifying bean of type. I defined, expected a single matching bean, but I found 2

Remove <bean name = "GebruikerDAO" class="services.JpaGebruikerDao"/> from the XML configuration (and if that's all that exists in the configuration, I suggest you remove the whole file).

This is needed since JpaGebruikerDao is already being registered as a (Repository) bean via component scanning (under the name gebruikerDAO).