Tag：information
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Time：2021-10-27
As a front-end developer and pseudo back-end developer, you need to understand some front-end and back-end technologies. In the early days of java development, the SSH framework was mainly used, and I didn’t know much about SSM. I wrote some summaries about springboot in my previous blog. I was deeply attracted by the simplified configuration […]
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Time：2021-10-27
preface As the soul of the x-library series framework, xpage has been committed to reducing the difficulty of using fragments since it was opened to the public for two years, and strive to realize an android development mode with multiple activities and fragments. Not long ago, I sorted out the use of xpage open source […]
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Time：2021-10-26
Download data using shell #!/bin/bash HOST=”127.0.0.1″ USER=”root” PASSWORD=”password” PORT=3306 MYSQL=”mysql -h ${HOST} -u ${USER} -P ${PORT} -p ${PASSWORD}” #Method 1 while read -a row do echo “${row[0]} == ${row[1]}” done< <(echo “select id,url from table_name limit 30;” | ${MYSQL}) while read ID URL do echo “${ID} == ${URL}” done< <(echo “select id,url from table_name limit […]
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Time：2021-10-26
preface Today, let’s share some actual examples of native CSS or CSS + JS. These examples are relatively simple, but they may be encountered in actual development. I believe it will be helpful to some children’s shoes~ CSS timeline effect Timeline is a very common effect. We can achieve it through the relative positioning and […]
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Time：2021-10-24
order record one Environment dependent component installation… 2 two Rapid deployment and installation… 2 three Modify database configuration information… 3 four Modify database configuration information of API interface… 3 five Configure UI access API interface information… 4 six Modify the database configuration information of kernel data interaction… 4 […]
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Time：2021-10-24
Basics: 1. Concept: a persistence layer framework in Java.2. Features and advantages:(1) Java code and SQL code are completely separated.(2) Good support for complex object mapping (input mapping, output mapping)(3) Using dynamic SQL, you can prevent SQL injection.3. Principle:(1) Create the mybatis-config.xml configuration file(2) Create sqlsessionfactory(3) Write the entity class corresponding to the database table(4) […]
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Time：2021-10-22
Unknowingly, wechat payment has also been updated, and the interface version has been upgraded to v3,With the upgrading of wechat, wechat payment for personal use has also been upgraded,V3 wechat payment document:pay.weixin.qq.com/wiki/doc/apiv3/i…The method of use is the same as before（V2 wechat payment）, you can use by passing parameters directly: New version addedcomposerInstallation, easy to use […]
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Time：2021-10-20
Author: LV Yiming Project code: https://github.com/MarkerHub/… Project video: https://www.bilibili.com/vide… Please keep this quote, thank you! Front and rear end separation items The article is generally divided into two parts. The Java back-end interface and Vue front-end page are relatively long, because they don’t want to be published separately. They really want you to learn in […]
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Time：2021-10-20
Summary:Nowadays, the products on the market are more and more diversified, but as consumers, how should we choose and query which goods are good or bad? With the advent of the intelligent era, recognition technology has been integrated into our daily life. How should we use character recognition technology to apply to our life and […]
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Time：2021-10-20
1. Syntax of simple query statement Select column name, column name,…, column name from table name; Select… From: it is the keyword of the query statement Select is followed by the data you want to get from the database From is followed by the table name, indicating from which you want to read the data […]
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Time：2021-10-19
1： Background 1. Tell a story At the end of July, a friend found me on Wx and said that his program memory occupied 8g, while the hosting only occupied 1.5g. He asked where the rest of the memory went? The screenshot is as follows: From the help content, this friend is really very polite. […]
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Time：2021-10-18
The following is the development document from wechat The steps are shown in the figure: Step 1: the user agrees to authorize and obtains the code Step 2: exchange code for web access authorization_ token Step 3: refresh access_ token Step 4: pull user information Next, I will paste the code of the actual project, […]
