Spring Annotation Configuration Using XML

Copy Demo

pom.xml

Application Context
resources -> New -> Spring Bean Configuration File

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Component Scanner

Xml Declaration

Component Scanner Demo
applicationContext.xml

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Stereotype Annotations

• @Component, @Service, @Repository
• Semantically the same
• @Component - any POJO
• @Service - business logic layer
• @Repository - data layer

Stereotype Annotations Demo

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Autowire

• Better with Annotations
• Tied to location
• Member Variables
• Constructor
• Setter

Autowired Member Variable

Member Injection Demo

Application.java

applicationContext.xml

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Autowired Setter Injection

Autowired Constructor Injection

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• Dependency Injection for Java
• Beyond our scope
• Why Spring?

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Java Configuration
https://blog.****.net/u012596785/article/details/79856841