mybatis-generator.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>

    <context id="cosmetic"   targetRuntime="MyBatis3">
    <commentGenerator>
    <property name="suppressDate" value="true"/>
    <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
    <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/diary?serverTimezone=UTC&amp;characterEncoding=utf8&amp;useUnicode=true&amp;useSSL=false" userId="root" password="666666">
    <!-- 防止生成字段不全 -->
    <property name="nullCatalogMeansCurrent" value="true"/>
    </jdbcConnection>
    <!-- <jdbcConnection driverClass="oracle.jdbc.OracleDriver"
    connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:orcl" 
    userId="scott"
    password="0000">
    </jdbcConnection> -->
    <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和 
    NUMERIC 类型解析为java.math.BigDecimal -->
    <javaTypeResolver>
    <property name="forceBigDecimals" value="false"/>
    </javaTypeResolver>
    <!--生成pojo类存放位置-->
    <javaModelGenerator targetPackage="com.diary.generator.pojo" targetProject="src/main/java">
    <!-- 是否让schema作为包的后缀 -->
    <property name="enableSubPackages" value="false"/>
    <!-- 从数据库返回的值清理前后的空格 -->
    <property name="trimStrings" value="true"/>
    </javaModelGenerator>
    <!--生成映射文件mapper接口存放位置-->
    <sqlMapGenerator targetPackage="com.diary.generator.mapper" targetProject="src/main/java">
    <!-- 是否让schema作为包的后缀 -->
    <property name="enableSubPackages" value="false"/>
    </sqlMapGenerator>
    <!--生成mapper接口、mapper.xml类存放位置-->
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.diary.generator.mapper" targetProject="src/main/java">
    <!-- 是否让schema作为包的后缀 -->
    <property name="enableSubPackages" value="false"/>
    </javaClientGenerator>
    <!--生成对应表及类名,需要记住的一点是逆向工程无法生成关联关系,只能生成单表操作-->
    <table  tableName="user"   domainObjectName="User" />
    <!--        <table  tableName="permission"   domainObjectName="Permission" />
    <table  tableName="role"   domainObjectName="Role" />
    <table  tableName="role_permission"   domainObjectName="RolePermission" />
    <table  tableName="user_role"   domainObjectName="UserRole" /> -->
    </context>
</generatorConfiguration>

测试

public static void main(String[] args) throws Exception {
    // TODO Auto-generated method stub
    List<String> warnings = new ArrayList<String>();
    boolean overwrite = true;
    //指向逆向工程配置文件
    File configFile = new File("src/main/resources/mybatis-generator.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);
}