<!-- xml标准格式 -->
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-/mybatis.org//DTD Config 3.0//EN" ""> <!-- 配置文件根节点 --><configuration> <!-- 标签properties 作用:全配置文件中需要用到的键值对,统一管理 使用:标签 ${} <dataSource type="POOLED"> <property name="driver" value="${driver}"/> <property name="url" value="${url}"/> </dataSource> 形式: 引入键值对的方式有两种: 一、从外部引入 <properties resource="eas.properties" /> 或者 <properties url="eas.properties" /> 但不能同时设置两个参数 二、内部写入 <properties> <property name="username" value="dev_user"/> <property name="password" value="F2Fa3!33TYyg"/> </properties> --> <properties resource="org/mybatis/example/config.properties"> <property name="username" value="dev_user"/> <property name="password" value="F2Fa3!33TYyg"/> </properties> <!-- 标签typeAliases 作用:java类全面一般挺长的,这里用一个别名代替,后面使用时,可直接用别名 形式: 一、<typeAlias alias="Blog" type="domain.blog.Blog"/> 别名自定义 二、<typeAlias type="domain.blog.Author"/> 别名取类的simplename 三、 <typeAliases> <package name="domain.blog"/> </typeAliases> 扫描包类,如果有@alias注释,取注释名,没有这取类的simplename --> <typeAliases> <typeAlias type="domain.blog.Author"/> <typeAlias alias="Blog" type="domain.blog.Blog"/> </typeAliases> <!-- 标签plugins --> <plugins> <plugin interceptor="org.mybatis.example.ExamplePlugin"> <property name="someProperty" value="100"/> </plugin> </plugins> <!-- 标签objectFactory --> <objectFactory type="org.mybatis.example.ExampleObjectFactory"> <property name="someProperty" value="100"/> </objectFactory> <!-- 标签settings --> <settings> <setting name="cacheEnabled" value="true"/> <setting name="lazyLoadingEnabled" value="true"/> <setting name="multipleResultSetsEnabled" value="true"/> <setting name="useColumnLabel" value="true"/> <setting name="useGeneratedKeys" value="false"/> <setting name="autoMappingBehavior" value="PARTIAL"/> <setting name="defaultExecutorType" value="SIMPLE"/> <setting name="defaultStatementTimeout" value="25"/> <setting name="safeRowBoundsEnabled" value="false"/> <setting name="mapUnderscoreToCamelCase" value="false"/> <setting name="localCacheScope" value="SESSION"/> <setting name="jdbcTypeForNull" value="OTHER"/> <setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString"/> </settings> <!-- 标签environments 定义MyBatis数据库环境,如连接池、数据库信息、事物管理等 --> <environments default="development"> <environment id="development"> <transactionManager type="JDBC"> <property name="..." value="..."/> </transactionManager> <dataSource type="POOLED"> <property name="driver" value="${driver}"/> <property name="url" value="${url}"/> <property name="username" value="${username}"/> <property name="password" value="${password}"/> </dataSource> </environment> </environments> <!-- 标签databaseIdProvider (不是很明白) 指明数据库这的类型,用于某些特定的SQL方式,比如分页查询语句,一个sql配置文件可配置不同的查询方式,通过databaseId进行多数据提供商的区分 --> <databaseIdProvider type="DB_VENDOR"> <property name="SQL Server" value="sqlserver"/> <property name="DB2" value="db2"/> <property name="Oracle" value="oracle" /> </databaseIdProvider> <!-- 标签typeHandlers --> <typeHandlers> <typeHandler handler="org.mybatis.example.ExampleTypeHandler"/> </typeHandlers> <!-- 标签mappers --> <mappers> <mapper resource="org/mybatis/builder/AuthorMapper.xml"/> <mapper resource="org/mybatis/builder/BlogMapper.xml"/> <mapper resource="org/mybatis/builder/PostMapper.xml"/> </mappers></configuration>