指定配置文件与main运行生成

public class GeneratorSqlmap {
 
    public void generator() throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        // 指定配置文件
        File configFile = new File("E:\\Code\\ThreeDay03/src/com/aa/utils/generatorConfig.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);
    }
 
    // 执行main方法以生成代码
    public static void main(String[] args) {
        try {
            GeneratorSqlmap generatorSqlmap = new GeneratorSqlmap();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

逆向工程的配置文件

<?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>
        <!-- 是否去除自动生成的注释 -->
        
        <property name="suppressAllComments" value="true"/>
    </commentGenerator>
    
    <!-- Mysql数据库连接的信息：驱动类、连接地址、用户名、密码 -->
    <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
        connectionURL="jdbc:mysql://localhost:3306/user?serverTimezone=UTC"
        userId="root"
        password="123456">
    </jdbcConnection>
    <!-- Oracle数据库
        <jdbcConnection driverClass="oracle.jdbc.OracleDriver"
            connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:yycg"
            userId="yycg"
            password="yycg">
        </jdbcConnection> 
    -->
    
    <!-- 默认为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>
    
    <!-- targetProject：生成POJO类的位置 -->
    <javaModelGenerator targetPackage="com.ujiuy.bean" targetProject=".\src">
    
        <!-- enableSubPackages:是否让schema作为包的后缀 -->
        <property name="enableSubPackages" value="false" />
        <!-- 从数据库返回的值被清理前后的空格 -->
        <property name="trimStrings" value="true" />
    </javaModelGenerator>
    
    <!-- targetProject：mapper映射文件生成的位置 -->
    <sqlMapGenerator targetPackage="com.ujiuy.dao"  targetProject=".\src">
        <!-- enableSubPackages:是否让schema作为包的后缀 -->
        <property name="enableSubPackages" value="false" />
    </sqlMapGenerator>
    
    <!-- targetProject：mapper接口生成的的位置 -->
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.ujiuy.dao"  targetProject=".\src">
    
        <!-- enableSubPackages:是否让schema作为包的后缀 -->
        <property name="enableSubPackages" value="false" />
    </javaClientGenerator>
    
    <!-- 指定数据表 -->
    <table schema="" tableName="card"></table>
    <table schema="" tableName="items"></table>
    <table schema="" tableName="orders"></table>
    <table schema="" tableName="user"></table>
    <table schema="" tableName="orderdetail"></table>

    
    <!-- 有些表的字段需要指定java类型 
    <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >
      <property name="useActualColumnNames" value="true"/>
      <generatedKey column="ID" sqlStatement="DB2" identity="true" />
      <columnOverride column="DATE_FIELD" property="startDate" />
      <ignoreColumn column="FRED" />
      <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" />
    </table> -->
 
  </context>
</generatorConfiguration>

导包