pom配置

    </dependencies>
         <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-maven-plugin</artifactId>
            <version>${mybatis.generator.version}</version>
            <!-- 仅用于让 Idea generatorConfig.xml 中DTD有效 -->
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>${mybatis.generator.version}</version>
                <configuration>
                    <configurationFile>src/main/resources/generator/generatorConfig.xml</configurationFile>
                    <!-- If true, then existing Java files will be overwritten if an existing Java file if found with the same name as a generated file.
                     If not specified, and a Java file already exists with the same name as a generated file,
                     then MBG will write the newly generated Java file to the proper directory with a unique name (e.g. MyClass.java.1, MyClass.java.2, etc.).
                     Important: MBG will always merge and overwrite XML files. -->
                    <overwrite>true</overwrite>
                    <verbose>true</verbose>
                </configuration>
                <executions>
                    <execution>
                        <id>Generate MyBatis Artifacts</id>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>org.mybatis.generator</groupId>
                        <artifactId>mybatis-generator-core</artifactId>
                        <version>${mybatis.generator.version}</version>
                    </dependency>
                    <dependency>
                        <!-- 用于自定义注释的，还有优化空间，后续可自己实现一个 -->
                        <groupId>com.github.hellorocky</groupId>
                        <artifactId>mbg-plugin</artifactId>
                        <version>1.2</version>
                    </dependency>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>${mysql.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

generatorConfig.xml配置

路径：resources/generator/generatorConfig.xml
模板

<?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="application.properties"/>-->
    <!--     <classPathEntry-->
    <!--             location="C:/Oracle/Middleware/wlserver_10.3/server/lib/ojdbc6.jar"/>-->
    <context id="my" defaultModelType="flat" targetRuntime="MyBatis3"  >
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>

        <commentGenerator  type="com.github.hellorocky.DatabaseCommentGenerator">
            <property name="javaFileEncoding" value="UTF-8"/>
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>

        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/member?characterEncoding=utf8&amp;useSSL=false&amp;serverTimezone=Asia/Shanghai"
                        userId="root"
                        password="Chf123456">
            <property name="useInformationSchema" value="true" />

            <!--MySQL 8.x 需要指定服务器的时区-->
            <property name="serverTimezone" value="UTC"/>
            <!--MySQL 不支持 schema 或者 catalog 所以需要添加这个-->
            <!--参考 : http://www.mybatis.org/generator/usage/mysql.html-->
            <property name="nullCatalogMeansCurrent" value="true"/>
            <!-- MySQL8默认启用 SSL ,不关闭会有警告-->
            <property name="useSSL" value="false"/>
        </jdbcConnection>

        <javaModelGenerator targetPackage="com.hb.member.entity"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="false"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>

        <sqlMapGenerator targetPackage="sqlmap"
                         targetProject="src/main/resources">
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>

        <javaClientGenerator targetPackage="com.hb.member.dao"
                             targetProject="src/main/java" type="XMLMAPPER">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <table
            tableName="user"
            domainObjectName="UserDO"
            mapperName="UserDAO"
            enableInsert="true"
            enableSelectByPrimaryKey="true"
            enableSelectByExample="false"
            enableCountByExample="false"
            enableUpdateByPrimaryKey="true"
            enableUpdateByExample="false"
            enableDeleteByPrimaryKey="true"
            enableDeleteByExample="false"
        >
            <!-- generatedKey用于生成生成主键的方法 -->
            <generatedKey  identity="true" column="user_id" sqlStatement="SELECT LAST_INSERT_ID()"/>
            <!--<columnRenamingRule searchString="^D_"
                        replaceString=""/>-->
        </table>

    </context>
</generatorConfiguration>

MyBatis Generator 官网链接

http://www.mybatis.org/generator/