mappers 映射器(四種配置)
(1) mapper.xml
(2) 絕對路徑(不用)
(3) 接口配置
(4) 包掃描(使用)
<!— sqlmapper 配置文件路徑 -->
<mappers>
<mapper resource="org/mybatis/builder/AuthorMapper.xml"/>
<mapper resource="org/mybatis/builder/BlogMapper.xml"/>
<mapper resource="org/mybatis/builder/PostMapper.xml"/>
</mappers>
<!—url 絕對路徑形式-->
<mappers>
<mapper url="file:///var/mappers/AuthorMapper.xml"/>
<mapper url="file:///var/mappers/BlogMapper.xml"/>
<mapper url="file:///var/mappers/PostMapper.xml"/>
</mappers>
<!—接口 列表配置形式 註解 sql-->
<mappers>
<mapper class="org.mybatis.builder.AuthorMapper"/>
<mapper class="org.mybatis.builder.BlogMapper"/>
<mapper class="org.mybatis.builder.PostMapper"/>
</mappers>
<!—**映射包下所有接口**-->
<mappers>
<package name="org.mybatis.builder"/>
</mappers>