Mybatis逆向工程（偷懒）

官方文档：https://mybatis.org/generator/

导包：

    <!--Mybatis逆向工程-->
    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.7</version>
    </dependency>

编写并启动Mysql

由于我是多模块需要每个路径都要写绝对路径

如果不是多模块就写：.\src\main\java

<?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">
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--配置数据库连接-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/ssm_crud1?useUnicode=true&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeCode=false&amp;serverTimezone=UTC&amp;useSSL=false"
                        userId="root"
                        password="123456">
        </jdbcConnection>

        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>

        <!--指定Java实体类生成的位置-->
        <javaModelGenerator targetPackage="com.carpe.entity"
                            targetProject="C:\Users\Carpe\IdeaProjects\ssm-crud-demo\ssm-crud-demo1\src\main\java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>

        <!--指定sql映射文件生成的位置-->
        <sqlMapGenerator targetPackage="mapping"
                         targetProject="C:\Users\Carpe\IdeaProjects\ssm-crud-demo\ssm-crud-demo1\src\main\resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>

        <!--指定mapper接口生成的位置，mapper接口-->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.carpe.mapper"
                             targetProject="C:\Users\Carpe\IdeaProjects\ssm-crud-demo\ssm-crud-demo1\src\main\java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>

        <!--table指定每个数据库里表的生成策略-->
        <table tableName="tbl_emp" domainObjectName="Employee"/>
        <table tableName="tbl_dept" domainObjectName="Department"/>

    </context>
</generatorConfiguration>

写个测试类运行就自动生对应的层了

public class MBGTest {
    //Mybatis逆向工程自动生成
    public static void main(String[] args) throws XMLParserException, IOException, InvalidConfigurationException, SQLException, InterruptedException {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        //多模块要用绝对路径
        File configFile = new File("C:\\Users\\Carpe\\IdeaProjects\\ssm-crud-demo\\ssm-crud-demo1\\src\\main\\resources\\mbg.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        myBatisGenerator.generate(null);
    }
}