Maven环境下MyBatisGenerator 配置

Posted 2021-02-16 朝圣之路

1. 插件导入; pom文件引入mybatis-generator-maven-plugin

       <plugin>
                   <groupId>org.mybatis.generator</groupId>
                   <artifactId>mybatis-generator-maven-plugin</artifactId>
                   <version>1.3.2</version>
                   <configuration> <!-- generator 工具配置文件的位置 -->
                       <configurationFile>${basedir}/src/main/resources/mybatisGenerator/generatorConfig.xml</configurationFile>
                       <verbose>true</verbose>
                       <overwrite>true</overwrite>
                   </configuration>
                   <dependencies>
                       <dependency>
                           <groupId>mysql</groupId>
                           <artifactId>mysql-connector-java</artifactId>
                           <version>5.1.16</version>
                       </dependency>
                   </dependencies>
       </plugin>

2. generatorConfig.xml 配置

   <?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>
       <properties resource="mybatisGenerator/mybatisGenerator.properties"/>
   
       <context id="lego" targetRuntime="MyBatis3Simple" defaultModelType="flat">
   
           <!-- 注释 -->
           <commentGenerator >
               <!-- 是否取消注释 -->
               <property name="suppressAllComments" value="false"/>
               <!-- 是否生成注释代时间戳-->
               <property name="suppressDate" value="true" />
           </commentGenerator>
   
           <!--数据库连接信息-->
           <jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.connectionURL}"
                           userId="${jdbc.userId}" password="${jdbc.password}">
           </jdbcConnection>
   
           <!--类型转换-->
           <javaTypeResolver >
               <!-- 是否使用bigDecimal， false可自动转化以下类型（Long, Integer, Short, etc.） -->
               <property name="forceBigDecimals" value="false" />
           </javaTypeResolver>
   
           <!-- 生成实体类地址 -->
           <javaModelGenerator targetPackage="${package.do}" targetProject="src/main/java">
               <property name="enableSubPackages" value="false" />
               <property name="trimStrings" value="true" />
           </javaModelGenerator>
   
           <!--生成mapper-->
           <sqlMapGenerator targetPackage="${package.mapper}"  targetProject="src/main/resources">
               <property name="enableSubPackages" value="false" />
           </sqlMapGenerator>
   
           <!--dao接口-->
           <javaClientGenerator type="XMLMAPPER" targetPackage="${package.dao}"  targetProject="src/main/java">
               <property name="enableSubPackages" value="false" />
           </javaClientGenerator>
   
           <table tableName="lego_user" domainObjectName="UserDO" >
               <!-- 数据库表主键 -->
               <generatedKey column="id" sqlStatement="select last_insert_id()" identity="true" />
           </table>
   
       </context>
   </generatorConfiguration>

3. generatorConfig.properties 配置（解耦和 ，可忽略）

   #mysql
   jdbc.driverClass=com.mysql.jdbc.Driver
   
   #lego
   jdbc.connectionURL=jdbc:mysql://localhost:3306/lego?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf8
   jdbc.userId=root
   jdbc.password=123456
   
   #package
   package.do=com.zhangweinan.dao.objects
   package.dao=com.zhangweinan.dao
   package.mapper=mapper

    

　　　　SpringBoot环境下映射关系配置

1. application.properties文件新增配置
   

   # mybatis
   mybatis.mapper-locations=classpath:mapper/*.xml

2. SpringBoot Starter启动类新增注解MapperScan

   @SpringBootApplication
   @MapperScan("com.zhangweinan.dao")
   public class Starter {
   
       public static void main(String[] args) {
           SpringApplication.run(Starter.class, args);
       }
   
   }

    

   tips：mysql-connector-java jar 与 mybatis-generator-maven-plugin 插件 可能会存在冲突问题，因此选择合适的version很重要。配置1中亲测可用