隶属于文章系列：技术架构 https://www.jianshu.com/p/4fa9b271bdcf

在mysql建库、建表后，用mybatis自动生成代码：

• 配置generatorConfig.xml
• 修改maven的pom.xml
• 执行生成命令
  

配置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>
        <!--  指定connector jar包的路径  -->
    <classPathEntry
        location="D:\mavenrepo\mysql\mysql-connector-java\5.0.5\mysql-connector-java-5.0.5.jar" />
    <context id="my" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="false" />
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

              <!-- 数据库  -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://172.20.176.138:3306/auth" userId="dishy" password="dishy"/>
        <!-- model javafile -->
        <javaModelGenerator targetPackage="kbds.auth.model"
            targetProject="D:/mybatis">
            <property name="enableSubPackages" value="false" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        
        <!--  映射文件 mapper xml   所在包和路径-->
        <sqlMapGenerator targetPackage="kbds.auth.mapper"
            targetProject="D:/mybatis">
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        
        <!--  接口  interface   所在包和路径-->
        <javaClientGenerator targetPackage="kbds.auth.dao"
            targetProject="D:/mybatis"
            type="XMLMAPPER">
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>

              <!--  表和bean的对应关系-->
        <table tableName="t_group" domainObjectName="Group"
            enableCountByExample="false" enableUpdateByExample="false"
            enableDeleteByExample="false" enableSelectByExample="false"
            selectByExampleQueryId="false">
        </table>
        
    </context>
</generatorConfiguration>

修改maven的pom.xml

在build--》plugins内添加新的plugin

<build>
  <plugins>
 <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <configurationFile>src/main/resources/generatorConfig.xml
                    </configurationFile>
                    <verbose>true</verbose>
                    <overwrite>true</overwrite>
                </configuration>
                <executions>
                    <execution>
                        <id>Generate MyBatis Artifacts</id>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
      </plugins>
    </build>

执行生成命令

进入pom.xml 所在目录：
mvn -e -X mybatis-generator:generate
在D:/mybatis下可以看到相关文件，复制到IDE目录。