pom.xml文件提添加

    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.2</version>
    </dependency>

      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration><!-- mybatis用于生成代码的配置文件 -->
          <configurationFile>src/main/resources/mybatis-generator/generatorConfig.xml</configurationFile>
          <verbose>true</verbose>
          <overwrite>true</overwrite>
        </configuration>
      </plugin>

在pom中的指定位置，新建文件：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 （/Users/rainbow/ssmdown/mavenRespotion/是前面设置的maven库：settings.xml的位置）-->
    <classPathEntry
            location="/Users/rainbow/ssmdown/mavenRespotion/mysql/mysql-connector-java/5.1.36/mysql-connector-java-5.1.36.jar"/>

    <context id="my" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="false"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>

        <!--  链接mysql -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/zytest" userId="root"
                        password="***"/>

        <!-- 生成model实体类文件位置 -->
        <javaModelGenerator targetPackage="com.model"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>

        <!-- 生成mapper.xml配置文件位置 -->
        <sqlMapGenerator targetPackage="com.mapping"
                         targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>

        <!-- 生成mapper接口文件位置 -->
        <javaClientGenerator targetPackage="com.dao"
                             targetProject="src/main/java" type="XMLMAPPER">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>

        <!--<table tableName="T_FEE_AGTBILL" domainObjectName="FeeAgentBill"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false"/>-->

        <!-- 需要生成的实体类对应的表名，多个实体类复制多份该配置即可 -->
        <table tableName="usertest" domainObjectName="UserTest"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
            <!--<columnRenamingRule searchString="^D_"
                                replaceString=""/>-->
        </table>

    </context>
</generatorConfiguration>

⚠️下图的位置注意修改表名和对应的类名。否则会生成不了代码

配置build

mybatis-generator:generate -e

执行build

生成文件：

修改

针对mysql8，上面的代码执行会报错：Could not create connection to database server

解决：将数据库驱动改成 版本8，将链接方式改成 com.mysql.cj.jdbc.Driver

• pom.xml修改：

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.11</version>
    </dependency>

• generatorConfig.xml修改

    <!-- 数据库驱动 -->
    <classPathEntry
            location="/Users/rainbow/ssmdown/mavenRespotion/mysql/mysql-connector-java/8.0.11/mysql-connector-java-8.0.11.jar"/>

    <context id="my" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="false"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>

        <!--  链接mysql -->
        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/zytest" userId="root"
                        password="root"/>