http://www.mybatis.org/generator/quickstart.html
1.引入jar包(在pom.xml中引入)
2.在工程下创建MBG配置文件
mbg.xml配置:
<?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"> <!-- 逆向生成时,没有注释 --> <commentGenerator> <property name="suppressAllComments" value="true" /> </commentGenerator> <!-- 配置数据库连接信息 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/ssm_crud" userId="root" password="123"> </jdbcConnection> <!-- java类型解析 --> <javaTypeResolver > <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 指定javaBean生成的位置 targetPackage:生成在哪个包下 targetProject:生成在哪个工程下 --> <javaModelGenerator targetPackage="com.atguigu.crud.bean" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 指定sql映射文件生成的位置 --> <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 指定dao接口生成的位置,就是mapper接口生成的位置 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.atguigu.crud.dao" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- table 指定每个表的生成策略 tableName 表示连向数据后逆向生成哪张表 domainObjectName 表示表对应的Javabean的类名 --> <table tableName="tbl_emp" domainObjectName="Employee"></table> <table tableName="tbl_dept" domainObjectName="Department"></table> </context> </generatorConfiguration>
3.生成:
package com.atguigu.crud.test; import java.io.File; import java.io.IOException; 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.XMLParserException; import org.mybatis.generator.internal.DefaultShellCallback; public class MBGtest { 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); } }