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1. How to use CSS <!--1.Reference External css--> <link rel="stylesheet" type="text/css" href="mystyle.css"> <!--2.Internal use css--> <style> body{background-color: linen;} </style> <!--3.Hanlin Academician css--> <div style="color:red;">text</div> 2. Selector Simple selector NameUsage meth ...

Python WeChat Subscription Applet Course Video https://edu.csdn.net/course/detail/36074 Python Actual Quantitative Transaction Finance System https://edu.csdn.net/course/detail/35475 In the previous article, we have obtained the output stream of business data, which is the output stream of dim layer dimension data and the output stream of dw ...

1. Brief introduction of bubble sorting Bubble Sort, also known as Bubble Sort, is a simple sorting algorithm. It repeatedly visits the columns to be sorted, compares two elements at a time, and exchanges them if they are in the wrong order. The work of visiting a number of columns is repeated until no exchanges are needed, that is, the ...

Using docker-compose to build mysql master-slave structure A few days ago, I tried to learn the online tutorial. Using docker-compose, I set up a simple master-slave mysql for learning purposes. Next, I will show you the pure dry goods step by step in the following section. Roll up!!! First, the basic environment and software used by the auth ...

Database Introduction concept A Database for storing data, which organizes, stores and manages data according to a certain data structure. classification Relational databases: mysql, sql server, oracle, DB2, etc. Non-relational databases: redis, etc. How python operates on databases pymysql: pure Python development, supporting python2 and ...

preface A long time ago, I saw a summary article about the responder chain and event processing mechanism based on iOS. The comment said that simple UI event processing can be carried out through this mechanism. At that time, I didn't care much and didn't have a deep understanding. Later, when I summarized this piece of content, I wrote such a ...

13, Configure and protect SSH services This section describes how to configure and protect SSH services. As a service that must be understood in the foundation, it needs to be well mastered both in principle and operation. SSH is basically used for remote management in work. This column will cover the entire RHCSA certification: Addre ...

In the past, Pangge took you to realize verification code authentication with Spring Security filter. Today, let's improve the configuration of verification code authentication, which is more in line with the design style of Spring Security and more internal.CaptchaAuthenticationFilter is implemented by imitating UsernamePasswordAuthenticationF ...

catalogue introduce Why use a separate reasoning container? Dependency Dockerfile Building and running containers generalization Download project file - 4.8 MB introduce Container technologies such as Docker significantly simplify the dependency management and portability of software. In this series of articles, we explore Docker Use ...

The Spring framework summarizes the common ways in which Spring creates bean s 1, Common ways Spring creates bean s xml configuration file@Bean annotation@ComponentBeanDefinitionFactoryBeanSupplier 2, Use of various creation methods 1.xml configuration file First create a User entity class public class User { private String name; ...