1、引入外掛

<plugin>
     <groupId>org.mybatis.generator</groupId>
     <artifactId>mybatis-generator-maven-plugin</artifactId>
     <version>1.3.2</version>
     <configuration>
        <configurationFile>src/main/resources/mybatis-generator/generatorConfig.xml</configurationFile>
        <verbose>true</verbose>
        <overwrite>true</overwrite>
     </configuration>
     <executions>
         <execution>
            <id>Generate MyBatis Artifacts</id>
            <goals>
                <goal>generate</goal>
             </goals>
         </execution>
     </executions>
    <dependencies>
         <dependency>
             <groupId>org.mybatis.generator</groupId>
              <artifactId>mybatis-generator-core</artifactId>
               <version>1.3.2</version>
           </dependency>
      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <version>5.1.40</version>
      </dependency>
       </dependencies>
   </plugin>

2、新增配置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>
    <!-- <classPathEntry location="E:/maven/repository/mysql/mysql-connector-java/5.1.40/mysql-connector-java-5.1.40.jar"/> -->
    <context id="my" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="false" />
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/test" userId="root"
                        password="root" />

        <javaModelGenerator targetPackage="com.liu.mapper.model"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <sqlMapGenerator targetPackage="com.liu.mapper"
                         targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <javaClientGenerator targetPackage="com.liu.mapper"
                             targetProject="src/main/java" type="XMLMAPPER">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <table tableName="test_context" domainObjectName="testContext">
            <!-- <property name="useActualColumnNames" value="true"/> -->
        </table>

    </context>
</generatorConfiguration>

3、生成程式碼

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