逆向工程步骤:
1.在pom.xml文件中引入 mybatis-generator插件<!-- mybatis逆向工程插件--> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.2</version> <configuration> <!--配置文件的位置--> <configurationFile>src/main/resources/generatorConfig.xml</configurationFile> <verbose>true</verbose> <overwrite>true</overwrite> </configuration> </plugin>
2.配置generatorConfig.xml文件:
`
<plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>
<plugin type="org.mybatis.generator.plugins.ToStringPlugin"></plugin>
<!--suppressAllComments 设置为true 则不再生成注释-->
<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!-- 数据库的相关配置 -->
<jdbcConnection
driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/music?useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC"
userId="root"
password="root123456">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!-- 实体类生成的位置 -->
<javaModelGenerator targetPackage="com.person.project.music.domain" targetProject="src/main/java">
<!-- 是否允许子包,即targetPackage.schemaName.tableName -->
<property name="enableSubPackages" value="true"/>
<!-- 是否对model添加 构造函数 -->
<property name="constructorBased" value="true"/>
<!-- 是否对类CHAR类型的列的数据进行trim操作 -->
<property name="trimStrings" value="true"/>
<!-- 建立的Model对象是否 不可改变 即生成的Model对象不会有 setter方法,只有构造方法 -->
<property name="immutable" value="false"/>
</javaModelGenerator>
<!-- Mapper.xml 文件的位置 -->
<sqlMapGenerator targetPackage="mappers" targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<!-- Mapper 接口文件的位置 -->
<javaClientGenerator targetPackage="com.person.project.music.dao" targetProject="src/main/java" type="XMLMAPPER">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<!-- table指定每个生成表的生成策略 表名 和 model实体类名-->
<table tableName="admin" domainObjectName="Admin"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="collect" domainObjectName="Collect"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="comment" domainObjectName="Comment"
enableCountByExample="true" enableUpdateByExample="true"![](https://www.icode9.com/i/l/?n=20&i=blog/1418975/202011/1418975-20201102195303064-1085587034.png)
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="list_song" domainObjectName="Listsong"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="singer" domainObjectName="Singer"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="song" domainObjectName="Song"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="song_list" domainObjectName="Songlist"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="song_list_rank" domainObjectName="Songlistrank"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
<table tableName="users" domainObjectName="Users"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>
</context>
使用jdbc驱动 8.0最蛋疼的坑
一定要配上如下配置,尤其是 jdbcUrl,一定要看清楚<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/music?useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC" userId="root" password="root123456"> </jdbcConnection>