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After studying spring, I learned that spring provides us with three ways to create bean s through ioc (inversion of control). 1. What is IOC? The dependency relationship between objects is created by the container. The relationship between objects is originally created and maintained by our developers. After we use the Spring framework, the r ...

What is circular dependency? Circular dependency: during dependency injection, multiple Bean objects hold references to each other. For example, object A contains object B, object B contains object A, and so on. They look like A ring, connected end to end. After understanding this, you may ask: what problems will this situation cause? ...

1. Phenomenon As we all know, the configuration class in Spring is used to replace the configuration file. In the old days, we used XML configuration, but now most of them use JavaBean configuration. A simple configuration class is as follows: @Configuration @ComponentScan("com.dh") public class AppConfig { @Bean public Entity1 entity1(){ ...

In depth study of MyBatis application analysis and best practices of MyBatis series 12_SSM framework plug in use and principle analysis of integrating MyBatis Older procedural apes share knowledge while learning and recording I hope this article is meaningful to you, like, collect and comment Your support is the greatest encouragement t ...

What is spring Spring is a lightweight open source framework for layered Java SE/EE application full stack, with IoC (Inverse Of Control) and AOP (Aspect Oriented Programming) as the kernel. Functions of spring In short, spring is used to manage objects. The creation, initialization, destruction and interdependent configuration of objec ...

This article is excerpted from Spring 5 core principles1 basic concepts of IOC and DIIoC (Inversion of Control) is to create, rely on and reverse the objects to be implemented in the original code to the container for implementation. We need to create a container and a description to let the container know the relationship between the object to ...

preface Article on Spring cloud integrates the basic environment of Seata distributed transaction (Part I) In this paper, we mainly complete the function implementation of three micro service order services: cloudalibaba Seata order service2001, inventory service: cloudalibaba Seata storage service2002 and balance service: cloudalibaba Seata a ...

1. spring overview 1.1 what is spring (understand) Spring is a lightweight open source framework for layered Java SE/EE application full stack, with IoC (Inverse Of Control) and AOP (Aspect Oriented Programming) as the kernel. It provides many enterprise application technologies such as presentation layer spring MVC, persistence layer sp ...

I Spring and the construction of Spring MVC 1. Transform Maven project into web project First, we create a maven project This creates a maven project: As the current project, it is a java web application, so we need to transform a web application based on maven On the right side, configure three places: The first is to describe our we ...

4. Dependency injection of IOC container The initialization process of IoC container is analyzed in detail. The main work of this initialization process is to establish BeanDefinition data mapping in IoC container. In this process, I didn't see IoC container injecting Bean dependencies. Next, I'll analyze how IoC container injects Bean depende ...