一、pom.xml引入依赖

<dependencies>
		<!-- MyBatis 逆向生成工具 -->
		<dependency>
			<groupId>org.mybatis.generator</groupId>
			<artifactId>mybatis-generator-core</artifactId>
			<version>1.3.3</version>
		</dependency>
		<!-- MyBatis 通用mapper 让所有自己的Mapper接口继承Mapper类 -->
		<dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
            <version>1.2.4</version>
        </dependency>
		<!--Mysql数据库驱动-->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.47</version>
		</dependency>
	</dependencies>

二、创建generator.properties

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.connectionURL=jdbc:mysql://localhost:3306/zd_supplier?useUnicode=true&characterEncoding=UTF-8&useSSL=false
jdbc.userId=root
jdbc.password=123456

三、创建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>
    <properties resource="generator.properties"/>
    <context id="MySqlContext" targetRuntime="MyBatis3" defaultModelType="flat">
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>
        <property name="javaFileEncoding" value="UTF-8"/>
        <!-- 为模型生成序列化方法-->
        <plugin type="org.mybatis.generator.plugins.SerializablePlugin"/>
        <!-- 为生成的Java模型创建一个toString方法 -->
        <plugin type="org.mybatis.generator.plugins.ToStringPlugin"/>
        <!--可以自定义生成model的代码注释-->
        <commentGenerator >
             <!--是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true"/>
            <property name="suppressDate" value="true"/>
            <property name="addRemarkComments" value="true"/>
        </commentGenerator>

		  <!-- 通用mapper所在目录 让所有自己的Mapper接口继承Mapper类-->
        <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <property name="mappers" value="tk.mybatis.mapper.common.Mapper"/>
        </plugin>
        
        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="${jdbc.driverClass}"
                        connectionURL="${jdbc.connectionURL}"
                        userId="${jdbc.userId}"
                        password="${jdbc.password}">
            <!--解决mysql驱动升级到8.0后不生成指定数据库代码的问题-->
            <property name="nullCatalogMeansCurrent" value="true" />
        </jdbcConnection>
     
        <!--指定生成model的路径-->
        <javaModelGenerator targetPackage="com.xxx.supplier.generator.model" targetProject="src/main/java"/>
        <!--指定生成mapper.xml的路径-->
        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources"/>
        <!--指定生成mapper接口的的路径-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.xxx.supplier.generator.dao"
                             targetProject="src/main/java"/>
        <!-- 指定数据库表 -->
        <!--生成全部表tableName设为%-->
        <table tableName="user">
            <generatedKey column="id" sqlStatement="MySql" identity="true"/>
        </table>
        <!-- 有些表的字段需要指定java类型
		<table  tableName="">
			<columnOverride column="" javaType="" />
		</table> -->
    </context>
</generatorConfiguration>

四、执行Generator代码生成器

public class Generator {
    public static void main(String[] args) throws Exception {
        //MyBatisGenerator执行过程中的警告信息
        List<String> warnings = new ArrayList<String>();
        //当生成的代码重复时，覆盖原代码
        boolean overwrite = true;
        //读取MyBatisGenerator配置文件
        InputStream is = Generator.class.getResourceAsStream("/generatorConfig.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(is);
        is.close();

        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        //创建MyBatisGenerator 
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        //执行生成代码
        myBatisGenerator.generate(null);
        //输出警告信息
        for (String warning : warnings) {
            System.out.println(warning);
        }
    }
}

五、查看验证