generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>

    <!-- 数据库驱动包位置，要使用绝对路径 -->
    <classPathEntry location="mysql-connector-java-5.1.47.jar" />

    <context id="DB2Tables" targetRuntime="MyBatis3">
        <!-- 不显示注释，因为这些注释没什么用 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <!-- 数据库驱动、URL、用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/mmall?characterEncoding=utf-8"
                        userId="root"
                        password="">
        </jdbcConnection>

        <!-- 保持默认就行 -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- 生成模型的包名和位置 -->
        <javaModelGenerator targetPackage="com.ikutarian.mmall.model" targetProject="src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- 生成的映射文件包名和位置 -->
        <sqlMapGenerator targetPackage="com.ikutarian.mmall.mapper" targetProject="src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!-- 生成DAO的包名和位置 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.ikutarian.mmall.dao"  targetProject="src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!-- 要生成那些表(更改tableName和domainObjectName就可以) -->
        <table tableName="mmall_shipping" domainObjectName="Shipping" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="mmall_cart" domainObjectName="Cart" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="mmall_category" domainObjectName="Category" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="mmall_order" domainObjectName="Order" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="mmall_order_item" domainObjectName="OrderItem" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="mmall_pay_info" domainObjectName="PayInfo" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
        <table tableName="mmall_product" domainObjectName="Product" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" >
            <columnOverride column="detail" jdbcType="VARCHAR"/>
            <columnOverride column="sub_images" jdbcType="VARCHAR"/>
        </table>
        <table tableName="mmall_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
    </context>

</generatorConfiguration>