官方文档
http://mybatis.org/generator/quickstart.html
快速上手
1.添加Maven依赖
<!--Mybatis相关-->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.7</version>
</dependency>
<!-- mysql-connector -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.16</version>
</dependency>
2.在项目根目录创建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>
<context id="DB2Tables" targetRuntime="MyBatis3">
<!--去除生成的文件里带有的注释-->
<commentGenerator>
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!--数据库配置-->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/mybatis?serverTimezone=GMT%2b8&useUnicode=true&characterEncoding=UTF-8&useSSL=false&zeroDateTimeBehavior=CONVERT_TO_NULL&allowPublicKeyRetrieval=true"
userId="root"
password="123456">
</jdbcConnection>
<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!--生成POJO的位置-->
<javaModelGenerator targetPackage="com.zzf.ssm.pojo"
targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!--生成Mapper文件的位置-->
<sqlMapGenerator targetPackage="mapper"
targetProject=".\src\main\resources">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!--生成dao文件的位置-->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.zzf.ssm.dao"
targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!--指定每个表的生成策略-->
<table tableName="tbl_emp" domainObjectName="Employee"></table>
<table tableName="tbl_dept" domainObjectName="Department"></table>
</context>
</generatorConfiguration>
其中MyBatis3是带有动态Sql和其它更复杂的生成,想要简单的增删查改可以使用MyBatis3Simple
3.生成工具类
package com.zzf.ssm.utils;
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;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/*
*
*@author:zzf
*@time:2021-01-19
*
*/
public class Generator {
public void generate() throws Exception {
List<String> warnings = new ArrayList<>();
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);
}
public static void main(String[] args) {
try{
Generator generator=new Generator();
generator.generate();
} catch (Exception e) {
e.printStackTrace();
}
}
}
运行工具类即可生成相关文件