Mastering Spring Framework Fundamentals - Resolving Ambiguous Arguments of the Same Type by Narrowing the Reference Type

The video tutorial explains how to handle multiple implementations of a service or repository in Spring. It covers the use of service annotations for auto-wiring and discusses the common issue of bean ambiguity when multiple beans implement the same interface. The tutorial provides solutions for resolving these ambiguities by being explicit about the bean type required. It also demonstrates how to handle similar issues with repository implementations, ensuring proper dependency injection.

What happens when there are multiple implementations of a service in Spring?

How can ambiguity in bean definitions be resolved in Spring?

Explain the difference between explicit bean retrieval and auto-wiring in Spring.

What is the significance of using qualifiers in Spring dependency injection?

What steps can be taken to avoid 'No qualifying bean' exceptions in Spring?