Mybatis逆向工程简易配置

1.建立数据库表

 create table if not exists `tb_student`(
		`id` int unsigned auto_increment,
		`name`  varchar(100) not null,
		`age` int  not null,
		primary key ( `id` )
	)engine=InnoDB default charset=utf8;
	
	insert into tb_student(name,age) values("zhangsan",6);
	insert into tb_student(name,age) values("lisi",10);
	insert into tb_student(name,age) values("wangwu",5);

2.导入jar包：http://download.csdn.net/download/my_momo_csdn/10155515

3.创建配置文件generateConfig.xml，放在src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>
    <context id="DB2Tables"    targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接地址账号密码-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" 
                        connectionURL="jdbc:mysql://localhost:3306/db_test" userId="root" password="123456">
        </jdbcConnection>
		
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        
		<!--生成Model类存放位置-->
        <javaModelGenerator targetPackage="top.mzp.generator" targetProject=".\src">
            <property name="enableSubPackages" value="false"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        
		<!--生成映射文件存放位置-->
        <sqlMapGenerator targetPackage="top.mzp.generator" targetProject=".\src">
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>
        
		<!--生成DaoMapper类存放位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="top.mzp.generator" targetProject=".\src">
            <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="tb_student"  domainObjectName="Student" ></table>
      
    </context>
</generatorConfiguration>

  

3.创建Java程序，并执行，生成与数据库表相对应的各种java文件

package top.mzp.test;
/**
 *@auther mozhongping
 *@version 2017-12-12下午1:00:37
 */
import java.io.File;
import java.util.ArrayList;
import java.util.List;
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;

public class Generate {
    public static void generator() throws Exception{
           List<String> warnings = new ArrayList<String>();
           boolean overwrite = true;
           //项目根路径不要有中文,我的有中文,所以使用绝对路径
           File configFile = new File("./generateConfig.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);

    }
    public static void main(String[] args) {
        try {
            generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

四、执行步骤三的java程序，再刷新工程即可看到生成的java文件，记得要刷新才能看到