mybatis-plus 2.x Upgrade 3.x Notes

The main upgrades from 2.0 to 3.0 are: Upgrading JDK 8 + Optimizing Performance Wrapper Support lambda Syntax Modular MP allocates each package structure reasonably Reconstructing injection method to support any method to simplify injection mode Global Configuration Underline Conversion Eliminates Injection of AS Statements Modify Wrapper to Q ...

Posted on Sat, 21 Sep 2019 03:06:18 -0700 by alconebay

Operational Weapon: Introduction to WEB Log Analysis Scenarios

Why do you want to analyze Web logs? With the continuous development of Web technology, Web has been applied more and more widely. Nowadays, many enterprises provide services to a website, so the business behavior and security of the website is very important. As the security industry put it, "There are only two kinds of people in the wor ...

Posted on Thu, 19 Sep 2019 20:14:49 -0700 by tomtimms

MySQL database related operations in python

Installation Basic Environment 1 Introduction MySQL is developed on the basis of TCP protocol, but after network connection, the data transmitted must follow the protocol of MySQL, encapsulating the package of MySQL protocol, which is the driver. MySQL Driver MySQLDB's most famous library, which encapsulates and implements MySQL's C Clien ...

Posted on Thu, 19 Sep 2019 07:12:15 -0700 by BITRU

Don't come and see? I'll teach you how to speculate in stocks.

Recently, stock speculation is to buy what falls, has been losing money, cry, as a person who has learned python how to tolerate, before also speculated in the stock that use the k-line like Yang Baoyin to select the stock is good. So just do it. I can use python to write a stock selection program. Good! idea is the first step, how to achieve i ...

Posted on Thu, 19 Sep 2019 07:02:46 -0700 by Fjerpje

Linux Text Processing Commands for Programming Tips

Qualified programmers are good at using tools. The so-called gentleman is not different, but good at faking things. Reasonable use of Linux command line tools can improve our work efficiency. This article briefly introduces three scenarios that can use Linux text processing commands to broaden your thinking. Hope that after reading this article ...

Posted on Wed, 18 Sep 2019 08:14:08 -0700 by PugJr

This is enough for Mybatis to use the introduction

In mybatis, an sqlsession object (which encapsulates connection objects) is encapsulated to perform CRUD operations on the database. Operation process Mybatis has a configurable XML for configuring data sources and mapping Mapping. The file name of XML is optional. For convenience, we still start mybatis-config.xml. We read the xml of this conf ...

Posted on Tue, 17 Sep 2019 07:41:18 -0700 by llama

Interpretation of Oracle Connection Configuration

After installing ORACLE database software, dbca needs to configure listener to connect to database after installing database. Here are some concepts that are difficult to understand and record some of the conclusions of the analysis. Start with the connection end. 1. How to connect database oracle's connection string consists of several parts. ...

Posted on Mon, 16 Sep 2019 01:17:52 -0700 by rslnerd

Extend mybatis and general mapper to support geometry type fields of mysql

Because the storage, query and calculation of geographic location information are needed in the project, it is decided to use the geometry type field of mysql (version 5.7) database to save geolocation coordinates and Virtual Generated Column to save geohash value for easy query. You need to understand how geometry is used and its advantages.Si ...

Posted on Sun, 15 Sep 2019 02:48:15 -0700 by therainmaker53

Oracle Trigger Usage

Original Link: https://www.jb51.net/article/80804.htm 1. Introduction to Triggers The definition of a trigger means that when a condition is established, the statement defined in the trigger is automatically executed. Therefore, trigge ...

Posted on Sat, 14 Sep 2019 20:29:39 -0700 by Jammerious

SpringBoot integration uses MyBatis XML configuration version

ORM Framework Object Relational Mapping (ORM) is a technology to solve the mismatch between object-oriented and relational database. In short, ORM automatically persists objects in programs to relational databases by using metadata that describes the mapping between objects and databases. Why ORM? When you develop an application (without O ...

Posted on Sat, 14 Sep 2019 06:52:58 -0700 by batman