1：引入jar

可以从这里查看myabtis的tag列表，截至到当前2021-09-07 11:40:48最新版本为3.5.7,如下图：

如下是基于maven引入3.3.1版本：

<dependency>
	<groupId>org.mybatis</groupId>
	<artifactId>mybatis</artifactId>
	<version>3.3.1</version>
</dependency>

2：编写全局配置文件

一般名称定义为mybatis-config.xml,当然也可以自定义，定义属性，别名，环境，插件，类型处理器，对象工厂，mapper映射信息等，如下是一个可能配置：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <properties resource="mybatis/mybatisOuter.properties">
        <property name="projectName" value="dongshidaddy-learn-java"/>
    </properties>
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <setting name="logPrefix" value="dongshidaddy--^^--"/>
        <setting name="cacheEnabled" value="true"/>
<!--        <setting name="lazyLoadTriggerMethods" value="getClass,getManyagce,c"/>-->
        <setting name="aggressiveLazyLoading" value="false"/>
    </settings>
    <typeAliases>
        <!--<typeAlias type="yudaosourcecode.mybatis.TestMybatis" alias="TestMybatis"/>-->
        <package name="yudaosourcecode.mybatis"/>
    </typeAliases>
    <typeHandlers>
        <!--<typeHandler handler="yudaosourcecode.mybatis.typehandler.EnumAndIntTypeHandler" javaType="yudaosourcecode.mybatis.MyEnum" jdbcType="INTEGER"/>-->
        <typeHandler handler="yudaosourcecode.mybatis.typehandler.EnumAndIntTypeHandler" javaType="yudaosourcecode.mybatis.MyEnum"/>
        <!--<package name="yudaosourcecode.mybatis.typehandler"/>-->
    </typeHandlers>
<!--
    <objectFactory type="yudaosourcecode.mybatis.objectfactory.MyObjectFactory">
        <property name="name" value="zhangsan"/>
        <property name="age" value="90"/>
    </objectFactory>
-->
    <!--<objectWrapperFactory type="yudaosourcecode.mybatis.objectwrapperfactory.MyObjectWrapperFactory"/>-->
<!--
    <plugins>
        <plugin interceptor="yudaosourcecode.mybatis.interceptor.MyInterceptor">
            <property name="xxx" value="yyyy"/>
            <property name="aaaa" value="bbbb"/>
        </plugin>
    </plugins>
-->
    <plugins>
        <plugin interceptor="yudaosourcecode.mybatis.interceptor.MyPagingPlugin"/>
    </plugins>
    <!-- 配置mybatis自动转换为驼峰式命名 -->
    <!-- 环境，可以配置多个，default：指定采用哪个环境 -->
    <environments default="test">
        <!-- id：唯一标识 -->
        <environment id="test">
            <!-- 事务管理器，JDBC类型的事务管理器 -->
            <transactionManager type="JDBC" >
                <property name="" value=""/>
            </transactionManager>
            <!-- 数据源，池类型的数据源 -->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver" />
                <property name="url" value="jdbc:mysql://127.0.0.1:3366/ssmdemo" />
                <property name="username" value="root" />
                <property name="password" value="root" />
            </dataSource>
        </environment>
    </environments>
    <!--数据库厂商标示 -->
    <databaseIdProvider type="DB_VENDOR">
        <property name="Oracle" value="oracle"/>
        <property name="MySQL" value="mysql"/>
    </databaseIdProvider>
    <mappers>
        <!--<mapper resource="mybatis/mapper/TestMyBatisMapper.xml"/>
        <mapper resource="mybatis/mapper/TestTypehandlerMapper.xml"/>-->
        <!--<mapper resource="mybatis/mapper/TestTypehandlerMapper.xml"/>-->
        <!--<package name="yudaosourcecode.mybatis.mapper"/>-->
        <mapper resource="yudaosourcecode/mybatis/mapper/TestResultmapAndParametermapMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/MyMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestMyBatisMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestTypehandlerMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/UserDaoMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/UserMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestExtendAndAutoMappingMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestResultmapConstructorMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestResultmapCollectionOneMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestResultmapCollectionManyMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestMapperSqlMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestLanguageDriverMapper.xml"/>
        <mapper resource="yudaosourcecode/mybatis/mapper/TestSelectKeyMapper.xml"/>
        <!--<mapper resource="yudaosourcecode/mybatis/mapper/TestSelectKeyMapperHuohuo.xml"/>-->
    </mappers>
</configuration>

TODO