Mybatis逆向工程需要的配置文件和生成器（xml + java）

1、配置文件 mbg.xml(放在src同级目录下)

<?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>

    <!--
        targetRuntime 可以设置生成的版本
        MyBatis3       豪华版本
        MyBatis3Simple CRUD操作
    -->
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <!--去掉全部注释-->
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <!--
           修改数据库的四个连接属性
       -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/mbg"
                        userId="root"
                        password="root">
        </jdbcConnection>

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

        <!--
              javaModelGenerator生成javaBean
                   targetPackage指定生成的包
                   targetProject指定生成的项目位置
       -->
        <javaModelGenerator targetPackage="com.atguigu.pojo"
                            targetProject=".MyBatis03_mbgsrc">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!--
            sqlMapGenerator标签是生成mapper.xml配置信息
                    targetPackage指定生成的包
                    targetProject指定生成的项目位置
        -->
        <sqlMapGenerator targetPackage="com.atguigu.mapper"  targetProject=".MyBatis03_mbgsrc">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!--
           javaClientGenerator生成mapper接口
                   targetPackage指定生成的包
                   targetProject指定生成的项目位置
       -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.atguigu.mapper"
                             targetProject=".MyBatis03_mbgsrc">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <table tableName="t_user" domainObjectName="User" ></table>
        <table tableName="t_book" domainObjectName="Book" ></table>
    </context>
</generatorConfiguration>

2、生成器Runner.java

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class Runner {
    public static void main(String[] args) throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("MyBatis03_mbg/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);
    }
}