官方文档：
mybatis.org/generator/
官方代码：
github.com/mybatis/gen…
MyBatis框架需要：实体类、自定义Mapper接口、Mapper.xml
传统的开发中上诉的三个组件需要开发者手动创建，逆向工程可以帮助开发者来自动创建三个组件，减轻开发工作量，提高开发效率
maven插件启动方式（无需启动类）
generator插件
<properties>
<mysql.connect.version>8.0.25</mysql.connect.version>
<mybatis.generator.plugin.version>1.4.0</mybatis-plus.version>
<mybatis.generator.vision>1.4.0</mybatis-plus.generator.vision>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>${mybatis.generator.plugin.version}</version>
<configuration>
<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
<executions>
<execution>
<id>Generate MyBatis Artifacts</id>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connect.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>${mybatis.generator.version}/<version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
main启动方式（需启动类）
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.11</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
Generator.java
public class Generator {
public static void main(String[] args) throws InterruptedException, SQLException, IOException, XMLParserException, InvalidConfigurationException {
List<String> warnings = new ArrayList<>();
boolean overwrite = true;
String projectPath = System.getProperty("user.dir");
String configFilePath = projectPath + "/src/main/resources/generatorConfig.xml";
File configFile = new File(configFilePath);
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);
warnings.forEach(System.out::println);
创建MBG配置文件
核心配置说明
jdbcConnection：配置数据库连接信息
javaModelGenerator：配置JavaBean的生成策略
sqlMapGenerator：配置SQL映射文件生成策略
javaClientGenerator：配置Mapper接口的生成策略
table：配置目标数据库
tableName：表名
domainObjectName：JavaBean类名
generatorConfig.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="mysqlTables" targetRuntime="MyBatis3">
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/数据库名?serverTimezone=UTC&useUnicode=true&useSSL=false&characterEncoding=utf8"
userId="root"
password="密码">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<javaModelGenerator targetPackage="com.mybatis.pojo" targetProject="./src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true" />
</javaModelGenerator>
<sqlMapGenerator targetPackage="com.mybatis.mapper" targetProject="./src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<javaClientGenerator type="XMLMAPPER" targetPackage="com.mybatis.mapper" targetProject="./src/main/java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<table tableName="m_user" domainObjectName="User"></table>
</context>
</generatorConfiguration>
参考资料来源：
【极简入门】4小时学会MyBatis | 楠哥教你学Java
- 1999
-
huan1993
Elasticsearch
- 389
-
MacroZheng
Spring Boot
