generatorConfog.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="MyBatis3Simple" defaultModelType="flat">

        <!-- 生成的Java文件的编码 -->
        <property name="javaFileEncoding" value="UTF-8"/>
        <!-- 使用自带序列化插件 -->
        <plugin type="org.mybatis.generator.plugins.SerializablePlugin"/>
        <plugin type="org.mybatis.generator.plugins.ToStringPlugin"/>
        <!-- 指定生成 Mapper 的继承模板 -->
        <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <property name="mappers" value="tk.mybatis.mapper.common.Mapper"/>
        </plugin>

        <!--注意context内的文件要按序放-->
        <!--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>

        <jdbcConnection driverClass="${jdbc.driverClass}"
                        connectionURL="${jdbc.connectionURL}"
                        userId="${jdbc.userId}"
                        password="${jdbc.password}">
        </jdbcConnection>

        <!--指定生成model的路径-->
        <javaModelGenerator targetPackage="${java.package}"
                            targetProject="${java.project}">
            <property name="enableSubPackages" value="${java.enableSubPackages}"/>
        </javaModelGenerator>

        <!--指定生成mapper.xml的路径-->
        <sqlMapGenerator targetPackage="${xml.package}"
                         targetProject="${xml.project}">
            <property name="enableSubPackages" value="${xml.enableSubPackages}"/>
        </sqlMapGenerator>

        <!--指定生成mapper接口的的路径-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="${mapper.package}"
                             targetProject="${mapper.project}">
            <property name="enableSubPackages" value="${mapper.enableSubPackages}"/>
        </javaClientGenerator>

        <!--生成全部表tableName设为%-->
        <table tableName="user" schema="test">
            <generatedKey column="id" sqlStatement="mysql" />
        </table>

    </context>
</generatorConfiguration>

generator.properties

# 数据库连接信息
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.connectionURL=jdbc:mysql://127.0.0.1:3306/db
jdbc.userId=
jdbc.password=

# 指定生成model的路径
java.package=
java.project=src\\main\\java
java.enableSubPackages=true

# 指定生成mapper.xml的路径
xml.package=
xml.project=src\\main\\resources
xml.enableSubPackages=true

# 指定生成mapper接口的路径
mapper.package=
mapper.project=src\\main\\java
mapper.enableSubPackages=true

maven 插件

<build>
        <plugins>
            <!-- Mapper 代码生成插件 -->
            <plugin>
                <!--  mybaits 代码生成插件  -->
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.6</version>

                <configuration>
                    <!--  代码自动生成配置文件路径  -->
                    <configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
                    <!--  是否覆盖   -->
                    <overwrite>true</overwrite>
                    <!--  允许移动生成的文件  -->
                    <verbose>true</verbose>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.37</version>
                    </dependency>
                    <!--  mapper 依赖库  -->
                    <dependency>
                        <groupId>tk.mybatis</groupId>
                        <artifactId>mapper</artifactId>
                        <version>4.0.3</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

点击maven插件生成代码

image.png