一、Maven配置文件中添加如下依赖

<dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.7</version>
        </dependency>
<plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.4</version>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.38</version>
                    </dependency>
                </dependencies>
                <configuration>
                    <verbose>true</verbose>
                    <overwrite>true</overwrite>
                    <configurationFile>${basedir}/src/main/resources/generatorConfig.xml</configurationFile>
                </configuration>
            </plugin>

二、添加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 >
    <!-- mysql jar 文件位置 -->
    <classPathEntry location="F:/instrument\maven/.m2/repository/mysql/mysql-connector-java/5.1.38/mysql-connector-java-5.1.38.jar" />
    <context id="store" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true:是 : false:否 -->
            <property name="suppressAllComments" value="true" />
            <!-- 是否去除所有自动生成的文件的时间戳,默认为false -->
            <!-- <property name="suppressDate" value="false"/> -->
        </commentGenerator>
        <!--数据库连接的信息:驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/g"
                        userId="root"
                        password="root">
        <!--<jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://112.35.82.91:3360/benevolenceParking"
                        userId="renrenbang"
                        password="05377975333">-->
        </jdbcConnection>
        <!-- targetPackage:包名称(自定义)  targetProject:项目路径(自定义)   -->
        <javaModelGenerator targetPackage="com.zblx.park.po" targetProject="src/main/java">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格  -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- 配置生成相应的实体Mapper.xml,对于Mapper3.X我们需要把type="XMLMAPPER" -->
        <!-- targetPackage:包名称(自定义)  targetProject:项目路径(自定义)   -->
        <sqlMapGenerator targetPackage="com.zblx.park.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- 配置生成相应的接口类,对应与Mapper.xml中的一系列CRUD方法SQL语句 -->
        <!-- targetPackage:包名称(自定义)  targetProject:项目路径(自定义)   -->
        <javaClientGenerator targetPackage="com.zblx.park.dao" targetProject="src/main/java" type="XMLMAPPER">
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 用户表-->
        <!--<table schema="benevolenceParking" tableName="parking" domainObjectName="Parking"
               enableCountByExample="false"
               enableUpdateByExample="false"
               enableDeleteByExample="false"
               enableSelectByExample="false"
               selectByExampleQueryId="false"
        >-->
        <table schema="fruit" tableName="parking" domainObjectName="Parking"
               enableCountByExample="false"
               enableUpdateByExample="false"
               enableDeleteByExample="false"
               enableSelectByExample="false"
               selectByExampleQueryId="false"
        />
        <table schema="fruit" tableName="orders" domainObjectName="Orders"
               enableCountByExample="false"
               enableUpdateByExample="false"
               enableDeleteByExample="false"
               enableSelectByExample="false"
               selectByExampleQueryId="false"
        >
        </table>
        <table schema="fruit" tableName="car" domainObjectName="Car"
               enableCountByExample="false"
               enableUpdateByExample="false"
               enableDeleteByExample="false"
               enableSelectByExample="false"
               selectByExampleQueryId="false"
        >
        </table>
        <table schema="fruit" tableName="carlock" domainObjectName="CarLock"
               enableCountByExample="false"
               enableUpdateByExample="false"
               enableDeleteByExample="false"
               enableSelectByExample="false"
               selectByExampleQueryId="false"
        >
        </table>
    </context>
</generatorConfiguration>