首先肯定要有mybatis的依赖
<!--mybatis spring-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
然后是要mybatis生成代码器核心依赖
<!--mybatis生成代码控件-->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
之后需要MySQL的依赖
<!--MySQL依赖-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
之后需要在build>plugins下加入一个plugin
<!--mybatis generator plugin-->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<executions>
<execution>
<id>Generate MyBatis Files</id>
<goals>
<goal>generate</goal>
</goals>
<phase>generate-sources</phase>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.2</version>
</dependency>
</dependencies>
</plugin>
<!--/mybatis generator plugin-->
在intelli IDEA 的菜单栏，点击RUN-Edit Configurations,点击弹出窗口左上角的+号，新增Maven.为当前配置配置一个名称，这里命名为"generator",
然后在 “Command line” 选项中输入“mybatis-generator:generate -e”。这里加了“-e ”选项是为了让该插件输出详细信息，帮助我们定位问题。
点击Apply。
点击Apply。
配置classpath下的配置文件:
<?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>
<context id="DB2Tables" targetRuntime="MyBatis3">
<!--避免生成重复代码的插件-->
<plugin type="com.tansuo365.test1.util.OverIsMergeablePlugin" />
<!--是否在代码中显示注释-->
<commentGenerator>
<property name="suppressDate" value="true" />
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!--数据库链接地址账号密码-->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/tansuodb" userId="root" password="xxxxxxxx">
</jdbcConnection>
<!--不知道做什么用的。。。反正贴上来了~-->
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!--生成bean类存放位置-->
<javaModelGenerator targetPackage="com.tansuo365.test1.bean" targetProject="src">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!--生成xml映射文件存放位置-->
<sqlMapGenerator targetPackage="classpath:mappings" targetProject="resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<!--生成mapper类存放位置-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.tansuo365.test1.mapper" targetProject="src">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<!--生成对应表及类名-->
<table tableName="petroleum_coke_tbl" domainObjectName="PetroleumCoke" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="true" selectByExampleQueryId="false">
<property name="my.isgen.usekeys" value="true"/>
<property name="useActualColumnNames" value="true"/>
<generatedKey column="id" sqlStatement="JDBC"/>
</table>
<!-- <table tableName="role" domainObjectName="Role" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="true" selectByExampleQueryId="false">
<property name="my.isgen.usekeys" value="true"/>
<property name="useActualColumnNames" value="true"/>
<generatedKey column="id" sqlStatement="JDBC"/>
</table>
<table tableName="permission" domainObjectName="Permission" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="true" selectByExampleQueryId="false">
<property name="my.isgen.usekeys" value="true"/>
<property name="useActualColumnNames" value="true"/>
<generatedKey column="id" sqlStatement="JDBC"/>
</table>
<table tableName="user_role" domainObjectName="UserRole" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="true" selectByExampleQueryId="false">
<property name="my.isgen.usekeys" value="true"/>
<property name="useActualColumnNames" value="true"/>
<generatedKey column="id" sqlStatement="JDBC"/>
</table>
<table tableName="role_permission" domainObjectName="RolePermission" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="true" selectByExampleQueryId="false">
<property name="my.isgen.usekeys" value="true"/>
<property name="useActualColumnNames" value="true"/>
<generatedKey column="id" sqlStatement="JDBC"/>
</table>-->
</context>
</generatorConfiguration>
具体也可以参考https://www.jianshu.com/p/310c299846fc
