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阅读mybatis插件文档

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# Mybatis Plus

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- [通过Configuration来创建SqlSessionFactory](#通过configuration来创建sqlsessionfactory)
- [SqlSessionFactory构建SqlSession实例](#sqlsessionfactory构建sqlsession实例)
- [openSession参数](#opensession参数)
- [插件](#插件)
# mybatis框架
## Mybatis中主要的类及其生命周期
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> batch会将相关的sql语句分组到一个batch文件中，并且一次提交到database server端。
> - addBatch方法会将单独的sql语句添加到batch中，而executeBatch方法会执行batch中所有被分组到一起的sql语句
> executeBatch方法会返回一个Integer数组，数组中每一个元素代表每个update语句的update count
## 插件
mybatis允许通过interceptor对mapped statement的执行进行拦截，mybatis支持拦截如下调用：
- Executor(update, query, flushStatements, commit, rollback, getTransaction, close, isClosed)
- ParameterHandler (getParameterObject, setParameters)
- ResultSetHandler (handleResultSets, handleOutputParameters)
- StatementHandler (prepare, parameterize, batch, update, query)