0.标签顺序Mybatis核心配置文件中有很多标签，它们谁谁写在前写在后其实是:boom:有顺序:boom:要求的：从前到后：properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,reflectorFactory?,plugins?,environments?,databaseId
1.Mybatis概念MyBatis是一款优秀的:zap:持久层框架:umbrella:，用于简化JDBC开发:sunny:JavaEE三层架构：表现层、业务层、持久层:snowflake:JDBC与MyBatis对比：!image20220815174914914(://s2.51cto.com/images/blog/202208/16144137_62fb3c21696e46231
Maven介绍、环境配置与项目创建
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