MyBatis Generator快速生成实体类和映射文件的方法

<mybatis-generator-plugin-version>1.4.1</mybatis-generator-plugin-version>

            <!-- mybatis ⽣成器插件 -->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>${mybatis-generator-plugin-version}</version>
                <executions>
                    <execution>
                        <id>Generate MyBatis Artifacts</id>
                        <phase>deploy</phase>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <!-- 相关配置 -->
                <configuration>
                    <!-- 打开⽇志 -->
                    <verbose>true</verbose>
                    <!-- 允许覆盖 -->
                    <overwrite>true</overwrite>
                    <!-- 配置⽂件路径 -->
                    <configurationFile>
                        src/main/resources/mybatis/generatorConfig.xml
                    </configurationFile>
                </configuration>
            </plugin>

<?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>
    <!-- 驱动包路径，location中路径替换成⾃⼰本地路径 -->
    <classPathEntry location="D:\class\source\mysql-connector-java-5.1.49.jar"/>
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <!-- 禁⽤⾃动⽣成的注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true"/>
            <property name="suppressDate" value="true"/>
        </commentGenerator>
        <!-- 连接配置 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/javanav_db?
characterEncoding=utf8&amp;useSSL=false"
                        userId="root"
                        password="1111">
        </jdbcConnection>
        <javaTypeResolver>
            <!-- ⼩数统⼀转为BigDecimal -->
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!-- 实体类⽣成位置 -->
        <javaModelGenerator targetPackage="com.example.cyk.model"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!-- mapper.xml⽣成位置 -->
        <sqlMapGenerator targetPackage="mapper"
                         targetProject="src/main/resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!-- mapper 接口⽣成位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.example.cyk.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!-- 配置⽣成表与实例, 只需要修改表名tableName, 与对应类名domainObjectName 即
       可-->
        <table tableName="j_article" domainObjectName="Article"
               enableSelectByExample="false"
               enableDeleteByExample="false" enableDeleteByPrimaryKey="false"
               enableCountByExample="false"
               enableUpdateByExample="false">
            <!-- 类的属性⽤数据库中的真实字段名做为属性名, 不指定这个属性会⾃动转换 _ 为
           驼峰命名规则-->
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="j_article_reply" domainObjectName="ArticleReply"
               enableSelectByExample="false"
               enableDeleteByExample="false" enableDeleteByPrimaryKey="false"
               enableCountByExample="false"
               enableUpdateByExample="false">
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="j_board" domainObjectName="Board"
               enableSelectByExample="false" enableDeleteByExample="false"
               enableDeleteByPrimaryKey="false" enableCountByExample="false"
               enableUpdateByExample="false">
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="j_message" domainObjectName="Message"
               enableSelectByExample="false"
               enableDeleteByExample="false" enableDeleteByPrimaryKey="false"
               enableCountByExample="false"
               enableUpdateByExample="false">
            <property name="useActualColumnNames" value="true"/>
        </table>
        <table tableName="j_user" domainObjectName="User"
               enableSelectByExample="false" enableDeleteByExample="false"
               enableDeleteByPrimaryKey="false" enableCountByExample="false"
               enableUpdateByExample="false">
            <property name="useActualColumnNames" value="true"/>
        </table>
    </context>
</generatorConfiguration>

<!-- useGeneratedKeys = true -->
<!-- keyProperty = 主键字段--> 
 
<!-- 当插⼊⼀条数据后，可以通过user.getId()获取到⾃动⽣成的Id值，如果⽅法中需要⽴即获取Id值，加⼊这个配置 --> 
<insert id="insert" parameterType="com.example.cyk.model.User" 
useGeneratedKeys="true" keyProperty="id" >

mybatis:
  mapper-locations: classpath:mapper/**/*Mapper.xml

@SpringBootTest
public class TestMapper {
 
    @Autowired
    private UserMapper userMapper;
 
    @Test
    public void select() {
        User user = userMapper.selectByPrimaryKey(1L);
        System.out.println(user);
    }
 
}