# mbg的使用 1.导入jar包 maven: ``` <!-- MBG Mybatis逆向工程 --> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.5</version> </dependency> ``` 2.配置文件（mbg.xml） ``` <?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> <!-- 配置数据库连接 --> <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/switching_system?serverTimezone=GMT" userId="root" password="root123"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 指定javaBean生成的位置 --> <javaModelGenerator targetPackage="com.hudong.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，mapper接口 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.hudong.crud.dao" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- table指定每个表的生成策略 --> <table tableName="bartering1" domainObjectName="Bartering1"></table> <table tableName="bartering2" domainObjectName="Bartering2"></table> <table tableName="comment" domainObjectName="Comment"></table> <table tableName="message" domainObjectName="Message"></table> <table tableName="user" domainObjectName="User"></table> </context> </generatorConfiguration> ``` 3.测试程序 ``` @Test public void test() 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); } ```