1, In pom files, dependency packages and plug-ins are introduced.

<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
	<scope>runtime</scope>
	<version>${mysql.connector.version}</version>
</dependency>		
<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>druid</artifactId>
    <version>${spring.admin.version}</version>
</dependency>

<plugin>
	<!--  MBG plug-in unit  -->
	<groupId>org.mybatis.generator</groupId>
	<artifactId>mybatis-generator-maven-plugin</artifactId>
	<version>1.3.5</version>
	<configuration>
		<!-- Define profile -->
		<configurationFile>src/main/resources/mybatis-generator.xml</configurationFile>
		<!-- Output details -->
		<overwrite>true</overwrite>
		<!-- Overwrite build file -->
		<verbose>true</verbose>
	</configuration>
	<dependencies>
		<dependency>
			<groupId>org.mybatis.generator</groupId>
			<artifactId>mybatis-generator-core</artifactId>
			<version>1.3.5</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>8.0.16</version>
		</dependency>
	</dependencies>
	<executions>
		<execution>
			<id>MyBatis Generate</id>
			<goals>
				<goal>generate</goal>
			</goals>
		</execution>
	</executions>
</plugin>

2, Edit mybatis-generator.xml Code generator configuration

The file configuration here is in the src/main/resources directory.

<?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>

    <!-- MyBatis Code generator  -->
    <context id="DBdemo" targetRuntime="MyBatis3">

        <!-- Remove automatically generated comments -->
        <commentGenerator>
            <property name="suppressAllComments" value="false" />
        </commentGenerator>

        <!-- Database connection address, account number, password -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/demoDB?characterEncoding=utf8"
                        userId="root" password="root">
        </jdbcConnection>

        <!-- generate model Class storage location -->
        <javaModelGenerator targetPackage="com.zhirong.model" targetProject="src/main/java">
            <!-- Add package name or not scheme name -->
            <property name="enableSubPackages" value="true" />
            <!-- Spaces before and after values returned from the database are cleaned up -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- generate mapper Map file storage location -->
        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!-- generate dao Class storage location of -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.zhirong.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!-- Generate corresponding table and class name -->
        <table tableName="t_goods_info" domainObjectName="Goods"
               enableCountByExample="false"
               enableUpdateByExample="false"
               enableDeleteByExample="false"
               enableSelectByExample="false"
               selectByExampleQueryId="false"
        />
    </context>
</generatorConfiguration>

3, maven runs the command.

4, Check the generation effect

Finally, we see that the build is successful.