zubogu / learnspring

LearnSpring

Fundamentals

Fundamental	Problem	Solution
JEE	Testability	Configuration
POJO Based	Maintainability	Focus
Unobtrusive	Scalability	Testing
AOP/Proxies	Complexity	Annotation or XML Based
Best Practices	Business Focus

Project setup

Use Maven, Java 8, Spring 4, Intellij. Use maven dependency to download spring.

Spring XML configuration

Setter Injection. Constructor Injection (Index based) or autowired in applicationContext.xml. Need to input each bean manually.

Spring annotation configuration using XML

Use annotations @Repository, @Service, @Component, @Autowired. Use below in applicationContext.xml to scan package.

<context:annotation-config />

<context:component-scan base-package="com.practice.spring"/>

Field, Setter or Constructor Injection.

Spring configuration using java.

Add AppConfig.java Class and use @Configuration the class level annotation, @Bean the method level annotation.

If we want to use @Autowired annotation configuration, add @ComponentScan({"com.practice"}) in AppConfig.java.