spring-learning

This repo contains learning notes about the analysis of the source code of the Spring Framework (v5.2.x) and Spring Boot (v2.4.x). I am trying to make the notes as easy to be understood as possible as I can, Therefore, I mainly organize the notes into diagrams combining with just some tiny code snippets in case for a clearer explanation.

Roger Lin, 04/15/2021, Los Angeles

Spring Framwork

Spring IoC Container (click for reading)

In this section, we will discuss:

• What happens behind when you exectue the following code?

  public class SpringDemo {
      public static void main(String[] args) {
          ApplicationContext applicationContext = new XmlWebApplicationContext(
            new ClasspathResource("applicationContext.xml")
          )
      }
  }

  or

  @Configuration
  public class SpringDemo {
      public static void main(String[] args) {
          ApplicationContext applicationContext =
            new AnnotationConfigApplicationContext(SpringDemo.class)
      }
  }

• What's the relationship between ApplicationContext and BeanFactory?

• How bean definitions in XML-based configuration file are being loaded?

• How bean definitions in JavaConfig classes are being loaded?

• The extension points of the Spring IoC Container

  • BeanFactoryPostProcessor

  • BeanPostProcessor

• etc.

Spring AOP

TODO: waiting for new content

Spring Boot

Spring Boot AutoConfiguration (click for reading)

In this section, we will discuss:

• How does Spring Boot implement its auto-configuration feature?

• How to encapsulate a Spring Boot starter for custom needs?

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This repo is frequently and continuously updating. If you are interested in it, I appreciate your click of the like and the watch button. Thanks.

The diagrams in this repo are created by OmniGraffle.