Course summary of VIP innovation project 1 semester 1 of 2021-2022 academic year

Course summary of VIP innovation project 1 semester 1 of 2021-2022 academic year 1. Java Foundation 1.1 how does java code execute reference resources: https://zhuanlan.zhihu.com/p/92906774 The Java execution process is as follows: Write Java code in the specified directory. The source code of Hello.java is as follows: class Hello{ p ...

Posted on Sun, 05 Dec 2021 19:14:18 -0500 by mewhocorrupts

Mybatis custom plug-in and PageHelper conflict resolution and public parameter writing

Accumulate a little every day, and you will succeed another day catalogue background Technical scheme Technical scheme selection Implementation steps Query interceptor Operation interceptor public entity Configuring Interceptors Query interceptor does not take effect Problem solving background        ...

Posted on Fri, 03 Dec 2021 00:53:37 -0500 by cheshil

Specific functions of pom.xml tags in Maven project

          The core of maven is pom.xml. maven is used to better help project management package dependency. If you want to introduce a jar package, you need to add < dependency > < / dependency > to the POM file to rely on the corresponding jar package. 1. < parent > < / parent > label &nbs ...

Posted on Sat, 27 Nov 2021 21:46:45 -0500 by Yaak

Alibaba Druid database connection pool take-off directly

1. What is a database connection pool Why use connection pooling: When we develop in Java, we need to access the database, but Java can't access the database directly. We have to establish a connection between the program and the database through JDBC. Performing a transaction requires creating a connection. The process of establishing a co ...

Posted on Thu, 25 Nov 2021 12:07:34 -0500 by PastorHank

Reading notes on Java multithreaded programming core technology second edition

1, Summary This book is written in a very shallow way. It is more about cases. The ThreadLocal part is OK. The principle is basically covered The following knowledge points are roughly summarized 2, Content When to use multithreading? blockDependency. For example, the service is divided into two execution processes. When service A is block ...

Posted on Fri, 19 Nov 2021 15:58:49 -0500 by Sephiriz

SSM2==springframework. Configure spring management data sources (. properties) and third-party jar packages (druid, mybatis) in pure XML, and compare them with those used alone before integration

         In“ SSM1==springframework. There are 4 ways to implement IOC with XML and 8 ways to implement DI. ”In, we know that the spring framework can give object A to IOC container management (creation) through IOC, and inject some attributes required by object A and object B into object A thr ...

Posted on Sat, 06 Nov 2021 19:46:33 -0400 by jabba_29

Maven common commands

Maven Library: http://repo2.maven.org/maven2/ Maven dependency query: http://mvnrepository.com/ 1, Maven common commands: 1. Create Maven's normal Java project: mvn archetype:create -DgroupId=packageName -DartifactId=projectName 2. Create Maven's Web project: mvn archetype:create -DgroupId=packageName -DartifactId=webap ...

Posted on Sun, 31 Oct 2021 12:09:33 -0400 by nocontrol

The java project deploys jar s to the maven central repository

Release process overview: 1. Apply for sonatype account creation task 2. Install the gpg key pair and upload the private / key to the central warehouse server 3. Configuration item, maven/ pom configuration 4. Project inspection / release 1, Apply for sonatype account and create application release task 1.1 registered account Official websit ...

Posted on Tue, 12 Oct 2021 16:13:30 -0400 by jcran

Summary of common java web tool classes and Jar packages (continued to be supplemented later)

Summary of common JavaWeb tool classes and Jar packages: Send mail jar package: mail.jar Tool class for sending mail: MailUtils package cn.rg.goods.utils; import javax.mail.*; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import java.util.Properties; /** * E-mail tool class: dependent on mail.jar */ ...

Posted on Fri, 01 Oct 2021 18:30:35 -0400 by Rother2005

A summary of psychotic docker knowledge points

Docker Basics Notes taken with Mad Video. Suitable for Linux basics (required) and SpringBoot. Video address:https://www.bilibili.com/video/BV1og4y1q7M4?p=6&spm_id_from=pageDriver 1. Learning Route of docker Overview of DockerDocker InstallationDocker command Mirror CommandContainer commandsOperational commands... Docker Mirro ...

Posted on Tue, 28 Sep 2021 13:07:10 -0400 by siko