MyBatis: From Beginner to Expert

MyBatis: From Beginner to Expert is a Chinese technical book by Liu Zenghui (the original author of the PageHelper pagination plugin and the general Mapper) explaining the MyBatis persistence framework. The book opens with the simplest MyBatis query, first guiding readers through setting up a Maven development environment to get the framework "up and running," and then unfolds step by step. The fundamentals section follows two threads—XML configuration and annotations—to explain systematically how to write select, insert, update, and delete statements and how to use multi-parameter interfaces, and it analyzes the implementation principle of dynamic proxies for Mapper interfaces. The advanced section focuses on MyBatis's most powerful feature, dynamic SQL (if, choose, where, set, trim, foreach, bind, multi-database support, and OGNL), as well as the configuration and operation of the MyBatis Generator code generator. The book also covers in detail advanced result mapping (one-to-one, one-to-many, discriminators), stored procedures, enums and custom type handlers, first-level and second-level caching with EhCache and Redis integration, and interceptor plugin development, and it demonstrates step by step how to integrate with Spring, Spring MVC, and Spring Boot. The final chapter introduces the MyBatis open-source project through Git and GitHub, using source code and test cases to help readers understand the framework's internal mechanisms. The book is accompanied by a wealth of directly runnable example code and emphasizes a learning path of "first learn to use it, then understand the principles."