1. Don't talk about employment if you don't know Spring!
It has been emphasized that Java is air and will never go out of style. And Spring is in a monopoly position in Java development , any framework that does not integrate with Spring will be eliminated! This is why Spring is a must in the job requirements of most companies!
A friend of mine went to JD for an interview before and was asked about AOP and IOC related questions. Because I haven't learned the relevant knowledge systematically, I didn't answer very well. Recalling this, I asked these points:
- What is Inversion of Control (IOC)? What is dependency injection?
- How is the bottom layer of Spring Aop implemented?
- Can you briefly talk about the relationship between the aspect, the point of contact, the connection point, and the notification in AOP?
As a lightweight Java development framework, Spring applies interface-oriented programming ideas throughout the entire Java system application, and Spring’s two major features, IOC and AOP, are also knowledge points that must be mastered to pass the interview. In the experience of participating in several interviews, I found a problem: many Java programmers do not thoroughly understand IOC and AOP, but only limited to IOC is inversion of control and AOP is aspect-oriented.
One word that you may have heard a lot in the interview now: source code! However, there are a lot of source books on the market, but they are always in the cloud. There are not many BBs. This collection of notes from application to source code analysis and in-depth analysis of spring has been collected for a long time, and I will share it with friends who are still learning the source code!
The following content will introduce the outline content of this Spring source code analysis notes manual in detail. The knowledge points covered are clear at a glance, but the number of words in the article is limited and the full pdf version is required. A free collection method is attached at the end of the article.
Let's take a look at this Spring source code analysis note
This learning manual is mainly from: Spring basics; IOC and AOP core ideas; handwritten IOC and AOP; Spring IOC applications, advanced features; Spring IOC container, Bean life cycle, lazy-init lazy loading mechanism principle, BeanFactory creation process, Spring IoC cycle Dependency issues; Spring AOP application, proxy selection, configuration method, AOP implementation in Spring, Spring declarative transaction, Spring AOP source code in-depth analysis of these content is mainly analyzed. The following is a list of notes!
The first module: Spring foundation
- Section 1 Introduction to Spring
- Section 2 Spring Development History
- Section 3 Advantages of Spring
- Section 4 Spring's core structure
- Section 5 Spring Framework Version
The second module: IOC and AOP core ideas
- What is IOC?
- What problem does IOC solve
- The difference between IOC and DI
- What is AOP
- What problem is AOP solving
- Why is it called aspect-oriented programming
The third module: implement IOC and AOP by hand
The fourth module: Spring IOC application
- Section 1 Spring IOC basics
- Section 2 Spring IOC advanced features
Module 5: In-depth analysis of Spring IOC source code
- Section 1 Spring IoC container initialization main process
- Section 2 BeanFactory creation process
- Section 3 Bean creation process
- Section 4 Principles of lazy-init lazy loading mechanism
- Section 5 Spring IoC cyclic dependency problem
The sixth module: Spring AOP application
- Section 1 AOP related terms
- Section 2 AOP proxy selection in Spring
- Section 3 How to configure AOP in Spring
- Section 4 Implementation of AOP in Spring
- Section 5 Spring declarative transaction support
The seventh module: In-depth analysis of Spring AOP source code
- AOP basic use case preparation
- Timing analysis
- Proxy object creation process
- Spring declarative transaction control
Due to space reasons, only the screenshots of the content and catalog are shown here. The full PDF version of the Spring source code analysis notes manual. Friends who need it, please forward it and reply to the private message [source code] to get it!
Dachang Spring Interview 100 Question Analysis Manual
1. Basic Concept Interview Question Set (Combing Spring related concepts)
2. Application scenario interview question set (different use scenario selection for each knowledge point)
3. In-depth knowledge interview question set (detailed explanation of underlying implementation principles)
4. Expanded content interview question set (Spring Boot related question set)
Content display
to sum up
When learning Spring source code, we should start from the following points:
- Not simply looking at the source code, but the core source code executed according to the actual project;
- Before reading the source code, figure out the main use of each class, the main use of each class attribute, architecture design ideas, etc., know what Spring wants to do, and then go to Spring source code;
- Remove the less nutritious part of the source code, leaving the most essential part, and use plain and simple language to describe the principle of the main line and the principle of the secondary line;
- Taking advantage of the enthusiasm of just reading the source code, learn design patterns
Remember: What makes you stronger than others is not that you have done CRUD work for a long time, but that you have more in-depth skills than others. Don't always stay at the surface of CRUD, understand and master the underlying principles and be familiar with the source code implementation, and form your own abstract thinking ability, and use it flexibly. This is the important direction for you to break through the bottleneck and stand out! To receive the above Spring source code analysis notes and interview manual only need:
——Like + follow, add assistant VX: mxx2020666, you can get it for free