MyBatis所需要的jar包
![preview](https://csdnimg.cn/release/downloadcmsfe/public/img/white-bg.ca8570fa.png)
![preview-icon](https://csdnimg.cn/release/downloadcmsfe/public/img/scale.ab9e0183.png)
MyBatis是一个流行的Java持久层框架,它简化了数据库操作,通过XML或注解的方式将SQL与Java代码绑定,使得开发者能够更方便地处理数据库交互。这个压缩包包含的文件是MyBatis运行所必需的核心组件和依赖包,让我们一一探讨这些知识点。 1. **MyBatis核心库**:`mybatis-x.x.x.jar` 这个文件是MyBatis的核心库,包含了MyBatis框架的所有核心功能,如SqlSessionFactoryBuilder、SqlSessionFactory、SqlSession等关键对象,以及Mapper接口和映射语句的解析等。它是连接应用程序与数据库的桥梁,负责执行SQL语句并返回结果。 2. **MyBatis的依赖包**: - `mysql-connector-java-x.x.x.jar`:这是MySQL的JDBC驱动,允许MyBatis通过Java程序连接到MySQL数据库,执行SQL语句。 - `ojdbc-x.x.x.jar`(Oracle版本)/ `postgresql-jdbc-x.x.x.jar`(PostgreSQL版本):类似地,这些是Oracle和PostgreSQL数据库的JDBC驱动,适用于对应的数据库系统。 - `commons-logging-x.x.x.jar`:Apache Commons Logging库,提供一个可配置的日志接口,便于MyBatis进行日志记录。 - `log4j-x.x.x.jar`:Log4j是另一种广泛使用的日志记录框架,MyBatis可以与其集成以实现详细的日志输出。 - `slf4j-api-x.x.x.jar` 和 `slf4j-log4j12-x.x.x.jar`:Simple Logging Facade for Java (SLF4J) 提供了一个API,允许用户在运行时选择不同的日志框架,如Log4j,以满足不同项目的日志需求。 - `mybatis-spring-x.x.x.jar`:MyBatis-Spring是MyBatis与Spring框架的整合库,使得MyBatis的SqlSession和Mapper接口能够无缝集成到Spring应用中,便于管理事务和依赖注入。 3. **MyBatis工作原理**: - **配置文件**:mybatis-config.xml是MyBatis的全局配置文件,包含数据库连接信息、类型别名、环境配置等。 - **映射文件**:mapper.xml文件定义了SQL语句和结果映射,每个Mapper接口对应一个映射文件。 - **SQL执行**:通过SqlSessionFactory创建SqlSession实例,然后调用SqlSession的方法执行SQL,获取结果集。 - **Mapper接口**:在Java代码中,我们可以直接调用Mapper接口的方法来执行对应的SQL,MyBatis会自动将方法参数映射到SQL的占位符上。 4. **事务管理**: 在Spring环境中,可以利用MyBatis-Spring进行事务管理,通过@Transactional注解来控制事务的边界。 5. **缓存机制**: MyBatis支持本地缓存和二级缓存,能有效提升数据读取效率。本地缓存是线程级的,而二级缓存则是在整个SqlSessionFactory级别的。 6. **动态SQL**: MyBatis的动态SQL功能允许在XML映射文件中编写条件判断,使得SQL语句更具灵活性,无需为每种可能的查询条件编写单独的SQL语句。 7. **插件扩展**: MyBatis允许开发者自定义插件,拦截框架的关键操作,例如PageHelper分页插件,可以方便地实现对查询结果的分页处理。 这个压缩包提供的MyBatis相关jar包涵盖了MyBatis运行所需的基本环境,包括核心库、JDBC驱动、日志库以及与Spring的集成库。开发者可以基于这些组件构建出高效、灵活的数据库访问层。
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![package](https://csdnimg.cn/release/downloadcmsfe/public/img/package.f3fc750b.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/TXT.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/ZIP.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/JAR.png)
- 1
![avatar-default](https://csdnimg.cn/release/downloadcmsfe/public/img/lazyLogo2.1882d7f4.png)
![avatar](https://profile-avatar.csdnimg.cn/4f81faf272844178a8e9262e6dc11631_mr_li13.jpg!1)
- 粉丝: 147
- 资源: 106
我的内容管理 展开
我的资源 快来上传第一个资源
我的收益
登录查看自己的收益我的积分 登录查看自己的积分
我的C币 登录后查看C币余额
我的收藏
我的下载
下载帮助
![voice](https://csdnimg.cn/release/downloadcmsfe/public/img/voice.245cc511.png)
![center-task](https://csdnimg.cn/release/downloadcmsfe/public/img/center-task.c2eda91a.png)
![dialog-icon](https://csdnimg.cn/release/downloadcmsfe/public/img/green-success.6a4acb44.png)