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Recently, I want to write a mybatis paging plug-in, but before I write the plug-in, I must understand the specific working principle of mybatis, so I will start to work by referring to other blogs and reading the source code. Core components: SqlSession Executor StatementHandler ParameterHandler ResultSetHandler TypeHandler MappedStatement Co ...

Introduction: PageHelper is an excellent open source mybatis paging plugin in China. It supports basic mainstream and commonly used databases, such as mysql, oracle, mariaDB, DB2, SQLite, Hsqldb, etc.Today, let's talk about PageHelper, a paging plugin. Here's the open source address of PageHelper. Interested buddies can check it out PageHelpe ...

Beginning A useful feature of Mybatis is reverse engineering, which can reverse-generate entity classes based on table structure to avoid manual errors.Most of the tutorials on the market are very old, mostly for mysql5. Here's my experience with mysql8. Introducing Engineering Using the maven package management tool, add the following configur ...

Introducing dependency Spring cloud b2b2c e-commerce social platform source code Please add Penguin: 103874626. The dependency of introducing mybatis spring boot starter in pom file: <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter<artifactId> <v ...

Main steps Add dependency on mybatis Configure data source information in the configuration file Write the mapping file of the pojo mapper interface maper Manually configure package scanning of mybatis Add @ MapperScan to the main startup class 1: import dependency <dependency> <groupId>org.mybatis.spring.boot</groupId> ...

1. JDBC <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </depend ...

Spring integrates Mybtais with the following configuration (all roads lead to Rome, and the way is not unique). private static final String ONE_MAPPER_BASE_PACKAGE = "com.XXX.dao.mapper.one"; @Bean public MapperScannerConfigurer oneMapperScannerConfigurer() { MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer(); ...

I. mybatis generator GUI Download address: https://github.com/LittlePageProgram/mybatis-generator-gui.git Usage: fill in related items and click generate Note: 1. For EntityExample, you need to drag it into the mapper layer 2. For modifying XML configuration information, the corresponding example also needs to be adjusted to the mapper lay ...

Integrate mybatis Introduction of jar package <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.0.1</version> </dependency> Using springboot to create tables for da ...

Query users by id sql used: SELECT * FROM `user` WHERE id = 1 Add the select tag in user.xml and write sql: <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <!-- namespace: Namespace, for isolation sql， ...