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Article catalogue 1, Introduction to EasyExcel 1. Application scenarios for Excel import and export2. EasyExcel features3. Case 1: Excel write operation by easyexcel4. Case 2:EasyExcel reading operation 2, Add function of course classification (back end) 1. Introducing easyexcel dependency2. Use the code generator to generat ...

preface IoC container is mainly divided into two stages: IoC container startup and dependency injection. In the previous section Spring principles and source code analysis series (4) - Spring IoC source code analysis (Part 1) we have analyzed the startup process of IoC container from the perspective of source code. This article will talk about ...

Spring -- dependency injection Dependency injection (DI) Dependency injection (DI) is a process through which an object can only define its dependencies (that is, other objects working with them) through constructor parameters, factory method parameters, or properties set on the object instance after constructing or creating the object in ...

The spring lifecycle callback is on the official website https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/core.html#beans -The factory life cycle is explained in detail. Spring's lifecycle callback is divided into Bean's lifecycle callback and container's lifecycle callback. 1. Lifecycle callback of bean 1.1 Bea ...

1, Basic overview 1.1 what is spring? ​ Spring is a lightweight java development framework rising in 2003. It is created to solve the complexity of enterprise application development. The core of spring is inversion of control (IoC) and aspect oriented programming (AOP). Spring is a lightweight open source framework that can be used in Java ...

JSR303 data verification Let's see how to use it first In Springboot, @ validated can be used to verify the data. If the data is abnormal, exceptions will be thrown uniformly to facilitate the unified processing of the exception center. Let's write a comment here so that our name can only support Email format; @Component //Register bean @Con ...

In this tutorial, we will learn how to deploy server functionality next to the front-end application and create an API to generate images and get metadata from links. With serverless functionality, developers can create and implement modern features and functions in their applications without the pain of setting up and managing back-end server ...

16.Spring transactions 1. Transaction control in spring Spring's transaction control can be divided into programmatic transaction control and declarative transaction control. Programming Developers directly couple the transaction code and business code, which is not needed in actual development. Declarative Developers use configuration to ...

The finishBeanFactoryInitialization method in the eighth part of Spring source code analysis is to initialize the singleton beanA profound interpretation of the seven thousand word long article, how to initialize the singleton bean in Spirng, and how does Spring solve the circular dependency most often asked in the interview?Today, the most imp ...

preface Sometimes, when you don't understand the way Spring manages Bean, you may encounter various problems, such as calling a method of Bean object in the container, such as: @Service public class MyServiceImpl { @Resource private UserServiceImpl userService; public MyServiceImpl() { userService.method(); } ...