1.简单生成

  1.添加依赖和插件

<dependencies><!-- MyBatis核心依赖包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.9</version></dependency><!-- MySQL驱动 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.49</version></dependency><!-- log4j日志 --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency>
</dependencies><!-- 控制Maven在构建过程中相关配置 -->
<build><!-- 构建过程中用到的插件 --><plugins><!-- 具体插件，逆向工程的操作是以构建过程中插件形式出现的 --><plugin><groupId>org.mybatis.generator</groupId><artifactId>mybatis-generator-maven-plugin</artifactId><version>1.3.0</version><!-- 插件的依赖 --><dependencies><!-- 逆向工程的核心依赖 --><dependency><groupId>org.mybatis.generator</groupId><artifactId>mybatis-generator-core</artifactId><version>1.3.2</version></dependency><!-- 数据库连接池 --><dependency><groupId>com.mchange</groupId><artifactId>c3p0</artifactId><version>0.9.2</version></dependency><!-- MySQL驱动 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.49</version></dependency></dependencies></plugin></plugins>
</build>

  2.创建MyBatis的核心配置文件

    mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration><properties resource="jdbc.properties"/><typeAliases><package name=""/></typeAliases><environments default="development"><environment id="development"><transactionManager type="JDBC"/><dataSource type="POOLED"><property name="driver" value="${jdbc.driver}"/><property name="url" value="${jdbc.url}"/><property name="username" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/></dataSource></environment></environments><mappers><package name=""/></mappers>
</configuration>

  3.创建逆向工程的配置文件

    generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfigurationPUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration><!--targetRuntime: 执行生成的逆向工程的版本MyBatis3Simple: 生成基本的CRUD（清新简洁版）MyBatis3: 生成带条件的CRUD（奢华尊享版）--><context id="DB2Tables" targetRuntime="MyBatis3Simple"><!-- 数据库的连接信息 --><jdbcConnection driverClass="com.mysql.jdbc.Driver"connectionURL="jdbc:mysql://192.168.2.18:3306/test"userId="root"password="root"></jdbcConnection><!-- javaBean的生成策略--><javaModelGenerator targetPackage="org.example.mybatis.pojo" targetProject=".\src\main\java"><property name="enableSubPackages" value="true" /><property name="trimStrings" value="true" /></javaModelGenerator><!-- SQL映射文件的生成策略 --><sqlMapGenerator targetPackage="org.example.mybatis.mapper"targetProject=".\src\main\resources"><property name="enableSubPackages" value="true" /></sqlMapGenerator><!-- Mapper接口的生成策略 --><javaClientGenerator type="XMLMAPPER"targetPackage="org.example.mybatis.mapper"targetProject=".\src\main\java"><property name="enableSubPackages" value="true" /></javaClientGenerator><!-- 逆向分析的表 --><!-- tableName设置为*号，可以对应所有表，此时不写domainObjectName --><!-- domainObjectName属性指定生成出来的实体类的类名 --><table tableName="t_emp" domainObjectName="Emp"/><table tableName="t_dept" domainObjectName="Dept"/></context>
</generatorConfiguration>

  mybatis.orgdtdmybatis-generator-config_1_0.dtd标红

解决方案：左边有红色小灯泡，点击Fetch external resource即可解决

  4.最后的目录结构

  5.执行MBG插件的generate目标

  6.生成的目录