MyBatis-MBG(MyBatis Generator)

1、添加jar包

<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
</dependency>

2、mbg.xml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>

    <!-- 
        targetRuntime="MyBatis3Simple":生成简单版的CRUD
        MyBatis3:豪华版
    
     -->
  <context id="DB2Tables" targetRuntime="MyBatis3">
      <!-- jdbcConnection：指定如何连接到目标数据库 -->
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"
        connectionURL="jdbc:mysql://localhost:3306/mybatis?allowMultiQueries=true"
        userId="root"
        password="123456">
    </jdbcConnection>

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

    <!-- javaModelGenerator：指定javaBean的生成策略 
    targetPackage="test.model"：目标包名
    targetProject="MBGTestProjectsrc"：目标工程
    -->
    <javaModelGenerator targetPackage="com.atguigu.mybatis.bean" 
            targetProject=".src">
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
    </javaModelGenerator>

    <!-- sqlMapGenerator：sql映射生成策略： -->
    <sqlMapGenerator targetPackage="com.atguigu.mybatis.dao"  
        targetProject=".conf">
      <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>

    <!-- javaClientGenerator:指定mapper接口所在的位置 -->
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.atguigu.mybatis.dao"  
        targetProject=".src">
      <property name="enableSubPackages" value="true" />
    </javaClientGenerator>

    <!-- 指定要逆向分析哪些表：根据表要创建javaBean -->
    <table tableName="tbl_dept" domainObjectName="Department"></table>
    <table tableName="tbl_employee" domainObjectName="Employee"></table>
  </context>
</generatorConfiguration>

3、生成mapper.xml，bean，mapper文件对应的接口

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