Mysql+mybatis 反转生成实体类和Mapper文件以及Mapper.xml文件

使用之前先在pom文件中加上如下依赖：

        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.30version>
        dependency>

        <dependency>
            <groupId>org.mybatis.generatorgroupId>
            <artifactId>mybatis-generator-coreartifactId>
            <version>1.3.2version>
        dependency>

这两个依赖是程序能够自动生成实体类的基础，必不可少。下面是生成步骤：

①在当前项目中建立一个generator.xml文件，这个文件名字可以自取，也不能太随意

②generator.xml配置如下内容

<generatorConfiguration>
    
    <classPathEntry location="E:\Developments Tools\mysql-connector-java-5.1.33.jar" />
    <context id="mysql2Beans" targetRuntime="MyBatis3">
        <commentGenerator>
            
            <property name="suppressAllComments" value="false" />
            
            <property name="suppressDate" value="true" />
        commentGenerator>

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="你的数据库连接" 
            userId="登录名"
            password="密码" />

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

          
        <javaModelGenerator targetPackage="com.lyt.usermanage.pojo" targetProject="E:\ConvertBean">
            <property name="enableSubPackages" value="true" /> 
            <property name="trimStrings" value="true" /> 
        javaModelGenerator>

        <sqlMapGenerator targetPackage="com.lyt.usermanage.mapper" targetProject="E:\ConvertBean">
            <property name="enableSubPackages" value="true" /> 
        sqlMapGenerator>

        <javaClientGenerator targetPackage="com.lyt.usermanage.dao" targetProject="E:\ConvertBean" type="XMLMAPPER">
            <property name="enableSubPackages" value="true" /> 
        javaClientGenerator>


            
        
        
        
        

        <table schema="test" tableName="user_third" domainObjectName="LytUserThird" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" 
           enableSelectByExample="false" selectByExampleQueryId="false">table>

        <table schema="test" tableName="user_stat" domainObjectName="LytUserStat" enableCountByExample="false" enableUpdateByExample="false"    
           enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">    
        table>    

        <table schema="test" tableName="user_relation" domainObjectName="LytUserRelation" enableCountByExample="false" enableUpdateByExample="false"    
           enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">    
        table>  

       context> 
generatorConfiguration>

具体配置标签请跳转：Mybatis Generator详解
注意：table有多少写多少，这是个手动活

③反转生成的两种方式

方式一：编写工具类运行

package com.lyt.usermanage.utils;

import java.io.File;    
import java.io.IOException;    
import java.sql.SQLException;    
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.exception.InvalidConfigurationException;    
import org.mybatis.generator.exception.XMLParserException;    
import org.mybatis.generator.internal.DefaultShellCallback;    

public class MyBatisGeneratorUtils {    

    public static void main(String[] args) {    
        try {    
            System.out.println("start generator ...");    
            List warnings = new ArrayList();    
            boolean overwrite = true;    
            File configFile = new File(MyBatisGeneratorUtils.class.getResource("/mybatis/generator.xml").getFile());    
            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);    
            System.out.println("end generator!");    
        } catch (IOException e) {    
            e.printStackTrace();    
        } catch (XMLParserException e) {    
            e.printStackTrace();    
        } catch (InvalidConfigurationException e) {    
            e.printStackTrace();    
        } catch (SQLException e) {    
            e.printStackTrace();    
        } catch (InterruptedException e) {    
            e.printStackTrace();    
        }    
    }    

}  

方式二：配置bat文件执行

执行完成后你就可以到你配置的生成文件保存路径去找文件了