Introducing MyBatis-Plus: Features, Architecture, and Quick Start Guide

MyBatis-Plus (MP) is an enhancement tool for MyBatis that adds powerful features without altering existing projects, aiming to simplify development and boost efficiency.

The project’s vision is to become the best companion for MyBatis, making development effortless.

Official website: https://mybatis.plus GitHub repository: https://github.com/baomidou/mybatis-plus

Key features include:

Non‑intrusive: adds functionality without affecting existing code.

Minimal performance impact: automatic CRUD injection.

Powerful CRUD operations with built‑in Mapper and Service.

Lambda‑style queries for type‑safe conditions.

Support for many databases (MySQL, Oracle, PostgreSQL, SQL Server, etc.).

Multiple primary‑key strategies, including distributed ID generation.

XML hot‑loading for simple CRUD without XML files.

ActiveRecord mode via Model inheritance.

Global custom operations injection.

Automatic keyword escaping.

Built‑in code generator (Maven plugin or template engine).

Pagination plugin based on physical pagination.

Performance analysis plugin for SQL timing.

Global interceptor to prevent accidental full‑table updates/deletes.

SQL injection protection plugin.

Framework structure diagram:

Quick Start

1. Add Maven dependency

<dependency>
  <groupId>com.baomidou</groupId>
  <artifactId>mybatis-plus-boot-starter</artifactId>
  <version>3.1.1</version>
</dependency>

2. Extend the generic mapper interface

public interface UserMapper extends BaseMapper<User> {}

3. Perform a query using a lambda wrapper

List<User> userList = userMapper.selectList(
    new QueryWrapper<User>()
        .lambda()
        .ge(User::getAge, 18)
);

MyBatis‑Plus will generate the following SQL: SELECT * FROM user WHERE age >= 18 This simple example demonstrates how quickly you can set up MyBatis‑Plus; you can explore more advanced features and share your experiences.