js data structure and algorithm dictionary and hash table
Dictionaries Store [key, value] pairs Then, we need to declare some methods that can be used by the mapping / dictionary...
springboot uses AOP to implement custom log saving
Preface Previously, there was a test blog about springboot Face-to-Face AOP, which gives you a brief overview of the ord...
Annotation in Java and its implementation principle
Annotation in Java and its implementation principle
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LinkedList source code reading analysis
LinkedList source code reading analysis 1.1 LinkedList introduction LinkedList is a two-way linked list inherited from ...
Implementation of Html to Word function based on XWPFDocument and jsup
Implementation of Html to Word function based on XWPFDocument and jsup
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Using regular expressions in js
When we design web pages, we always deal with forms, and most of the verification of forms is verified by regular...
Self use Java learning (network programming)
Three elements of network ip address: the unique identification of the device in the network ipv4: it is c...
Front end er, when do you want to write an HTTP server?
Front end er, when do you want to write an HTTP server?
Wh...
Elatic job quick start
See the previous document for the basic environment https://blog.csdn.net/qq_45745830/article/details/121624158?spm=1001...
springboot dynamic multi data source configuration and usage (read data source configuration from database)
The principle and basic implementation of dynamic multiple data sources have been described in the last two times. The p...
Global exception handling in Spring (Practical)
I believe everyone has used try catch to handle exceptions when writing code, especially in the back-end interface calle...
[code without size] implement a HashMap
Force deduction question This problem is on the power button Design hash mapping . If you think about it, it's very simp...
Ali technical experts explain the Fourth Lecture of DDD series - domain layer design specification
During pit filling. Thank you for your expectation of DDD series. You are welcome to pay attention to this account and c...
ssm integration configuration, understanding of the role of each layer of ssm, interpretation of configuration files of each layer of ssm, web program startup and web.xml understanding
Tomcat server load order Tomcat startup When tomcat starts, it will load the web.xml file. When loading the web.xml file...
Mybatis:Mybatais Generator reverse engineering from scratch
Mybatis Generator reverse engineering from scratch
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Java Foundation (class loading and ClassLoader understanding)
When a program actively uses a class, if the class has not been loaded into memory, the system will initialize the class...
Is AOP in Spring Boot JDK dynamic proxy or Cglib dynamic proxy?
As we all know, the underlying layer of AOP is dynamic agent, and there are two ways to implement dynamic agent in Java:...
D3.js Create Force Directed Map (V4)
D3.js Create Force Directed Map (V4) _Reference for this article: https://blog.csdn.net/juzipidemimi/article/details/100...
Hive common functions, window functions, UDF, UDTF
1. System built-in function View the functions provided by the systemhive> show functions; Displays the usage of the...
Configure logback log for spring boot
Configure logback log for spring boot As mentioned in the previous introduction to spring boot, the default log print of...
springboot integrates wechat payment V3 and uses JSAPI to order the whole process. It is easy to read without calling a third-party package (complete source code) and can be enjoyed out of the box
@TOC preface At present, due to the need of the project, a wechat payment function is used for wechat applet. I've been ...
JDK source code reading: concurrent HashMap class reading notes
ConcurrentHashMap public class ConcurrentHashMap<K,V> extends AbstractMap<K,V> implements ConcurrentMap<K...
Domain Driven Design - Code catalog specification
Reprinted from https://github.com/Vincedream/ddd-fe-demo
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Dom of JavaScript (get element, event basis, operation element)
1, Introduction to DOM
1. What is...
Wechat question answering applet v1.0 developed and built with cloud
Recently, I was bored, so I took the time to do a series of tutorials for the answer applet and share the source code. I...
Java double instance collection map HashMap treemap
1.Map interface
The Map interface defines the...
Front end development: WebP adaptively improves development performance
WebP introductionWebP It is a picture format launched by Google that provides both lossy and lossless compression method...