MyBatis-Plus高级用法：从入门到精通
MyBatis-Plus Advanced Guide: From Basics to Mastery
| iDev Tech | 2026-08-12T10:00:00
全面介绍MyBatis-Plus的高级功能，包括多租户、乐观锁、逻辑删除、动态表名和自定义SQL注入器。
A comprehensive guide to MyBatis-Plus advanced features including multi-tenancy, optimistic locking, logical deletion, dynamic table names, and custom SQL injectors.
多租户实现MyBatis-Plus的TenantLineInnerInterceptor拦截器可以自动为所有SQL语句添加租户条件，无需修改业务代码。通过实现TenantLineHandler接口，可以灵活控制哪些表需要应用租户过滤。乐观锁使用@Version注解标记版本字段，配合OptimisticLockerInnerInterceptor拦截器，MyBatis-Plus会自动在UPDATE语句中加入版本号检查，有效防止并发更新冲突。性能分析开发环境下启用p6spy可以监控每条SQL的执行时间，帮助发现慢查询。生产环境应关闭此功能以避免性能开销。
Multi-Tenancy ImplementationMyBatis-Plus's TenantLineInnerInterceptor automatically adds tenant conditions to all SQL statements without modifying business code. By implementing the TenantLineHandler interface, you can flexibly control which tables require tenant filtering.Optimistic LockingMark version fields with the @Version annotation and configure the OptimisticLockerInnerInterceptor. MyBatis-Plus will automatically add version checks to UPDATE statements, effectively preventing concurrent update conflicts.Performance AnalysisEnable p6spy in development environments to monitor SQL execution times and identify slow queries. This feature should be disabled in production to avoid performance overhead.