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1. Scope of bean In Spring, set whether to create a bean instance as a single instance or multiple instances. Generally speaking, our configuration file is in xml <bean id="name" class="route"> After this configuration, we can get the bean instance we created through our test class. In Spring. The bean instances we create can be single ...

[copyright notice] for non-commercial purposes, indicate the source and can be reproduced freely From: shusheng007 summary When you first came into contact with SpringBoot, did you feel a little uncomfortable with the Profile it provided? After groping, you realized its power. Today, I will summarize the Profile and keep it as an Intern ...

The notes of this article are from the dark horse video https://www.bilibili.com/video/BV1vt4y1i7zA , relevant information can be obtained in the comment area of the video. This information includes the background management system for preparing a semi-finished product in advance. If you want to improve another part, you need to use spri ...

springboot version 2.5.5 Debug Roadmap Many words are tears. Let's look at the picture. Let's start with run After using Springboot for so many years, what has this run() method done? @SpringBootApplication public class SpringbootDemoApplication { public static void main(String[] args) { SpringApplication.run(SpringbootD ...

exception handling Exception handler Exception classification management code: import org.springframework.stereotype.Component; import org.springframework.web.servlet.HandlerExceptionResolver; import org.springframework.web.servlet.ModelAndView; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletRespon ...

Summary of spring cloud notes of Leyou project The mapper module of ly item commodity contains datasource Ly Cart: Shopping Cart module Ly registry: registry server, other modules are clients Ly API gateway: routing gateway Ly feign: remote call Registration Center Eureka, ly registry server Lyregister the Module as the server The s ...

  Readme          After learning the ORM chapter of Spring 5 core principles and 20 class handwriting practice, I want to write a simple ORM framework myself. The first few chapters are moved to the editor according to the code in Tom's book, and have a general understanding of the core principles o ...

1. What is Spring Aop? AOP(Aspect Oriented Programming Face-to-Face Programming) is a design idea. It is a kind of improvement of oop. It enhances the business function of the target object by dynamic proxy during compile or run time, that is, expands the function of the target object. There are two ways to extend the function if using traditi ...

Two months ago, I completed the Spring Framework with the Spring Framework tutorial video of Mr. Wang He, the power node of station b. During the learning process, I tapped the code involved in the video line by line, and sorted out the materials related to the introduction of Spring. Here I record my notes and some insights during the learning ...

@Concepts, differences and execution order of PostConstruct, @ PreDestroy and initMethod, destroyMethod, InitializingBean and DisposableBean @PostConstruct Definition related This annotation is added to the Java EE5 specification, not spring. Spring means that it follows this specification and plays a certain role in the Servlet life cy ...