https://howtodoinjava.com/spring-core/spring-beans-autowiring-concepts/
https://stackoverflow.com/questions/40830548/spring-autowired-and-qualifier/48134386
https://www.baeldung.com/spring-qualifier-annotation
https://mkyong.com/spring/spring-autowiring-qualifier-example/
@Qualifier Example
To fix above problem, you need @Quanlifier to tell Spring about which bean should autowired.
package com.mkyong.common;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
public class Customer {
@Autowired
@Qualifier("personA")
private Person person;
//...
}
In this case, bean “personA” is autowired.
