Web Reference: Apr 28, 2024 · This article explores the usage of @Primary and @Qualifier annotations in Spring for bean selection and injection, accompanied by examples to illustrate their differences and applications. Comprehensive guide to understanding and using @Primary and @Qualifier annotations in Spring Framework for dependency injection. To summarize, the @Qualifier annotation is used to resolve ambiguity when multiple beans of the same type exist, whereas the @Primary annotation designates a default bean to be injected when no qualifier is specified.
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