mysql-generator.xml配置文件亲测有效

<?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>
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/miaosha"
                        userId="root"
                        password="123456">
        </jdbcConnection>
        <!-- 生成DataObject类存放位置 -->
        <javaModelGenerator targetPackage="com.miaoshaproject.dataobject" targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- 生成映射文件存放位置 -->
        <sqlMapGenerator targetPackage="mapping"  targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>
        <!-- 生成Dao类存放位置 -->
        <!-- 客户端代码，生成易于使用的针对Model对象和XML配置文件的代码
              type="ANNOTATIONDMAPPER"，生成Java Model和基于注解的Mapper 对象
              type="MIXEDMAPPER",生成基于注解的Java Model和相应的Mapper对象
              type="XMLMAPPER",生成SQLMap XML 文件和独立的Mapper接口-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.miaoshaproject.dao"  targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>
        <table schema="miaosha" tableName="user_info" domainObjectName="UserDO" >
        </table>
        <table schema="miaosha" tableName="user_password" domainObjectName="UserPasswordDO" >
        </table>
    </context>
</generatorConfiguration>