Autowiring — @Qualifier
Explore how to use the @Qualifier annotation to resolve autowiring conflicts when multiple beans of the same type exist in Spring. Understand the difference between @Qualifier and @Primary, and learn practical ways to specify which bean gets injected to control dependency injection effectively.
We'll cover the following...
@Qualifier annotation
Like @Primary, the @Qualifier annotation gives priority to one bean over the other if two beans of the same type are found. The bean whose name is specified in the @Qualifier annotation qualifies to be injected as a dependency. The @Qualifier annotation can be used in a scenario when we have multiple objects of the same type and autowiring by name cannot be used because the variable name doesn’t match any bean name.
For the code example shown in this lesson, we have created a sub-package called
lesson6inside the packageio.datajek.spring.basics.movierecommendersystem.The package containsMovieRecommenderSystemApplication.java,RecommenderImplementation.java, ...