1 前言
mybatisPlus的代码生成器可以帮助我们省去很多需要手动去写的配置如：Entity、Mapper、Mapper XML、Service、Controller模块代码
2 实操
1）创建一个springBoot项目（这里不再演示）
2）引入相关依赖
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.liubujun</groupId>
<artifactId>mybatis-plus-auto-generator</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>mybatis-plus-auto-generator</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.0</version>
</dependency>
<!--mybatis-plus生成器-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.4.0</version>
</dependency>
<!--模板相关依赖-->
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
3）配置文件
spring.datasource.username=root spring.datasource.password=lj123456 spring.datasource.url=jdbc:mysql://localhost:3306/shop?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2B8 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
4）数据库表
?5）编写配置
package com.liubujun;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import org.apache.commons.lang3.StringUtils;
import java.util.Scanner;
/**
* @Author: liubujun
* @Date: 2022/5/7 14:54
*/
public class Generator {
public static String scanner(String tip) {
Scanner scanner = new Scanner(System.in);
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("请输入").append(tip).append("：");
System.out.println(stringBuilder.toString());
if (scanner.hasNext()) {
String ipt = scanner.next();
if (StringUtils.isNotBlank(ipt)) {
return ipt;
}
}
throw new MybatisPlusException("请输入正确的" + tip + "！");
}
public static void main(String[] args) {
// 代码生成器
AutoGenerator mpg = new AutoGenerator();
// 全局配置
GlobalConfig gc = new GlobalConfig();
String projectPath = System.getProperty("user.dir");
gc.setOutputDir(projectPath + "/src/main/java");//设置代码生成路径
gc.setFileOverride(true);//是否覆盖以前文件
gc.setOpen(false);//是否打开生成目录
gc.setAuthor("liubujun");//设置项目作者名称
gc.setIdType(IdType.AUTO);//设置主键策略
gc.setBaseResultMap(true);//生成基本ResultMap
gc.setBaseColumnList(true);//生成基本ColumnList
gc.setServiceName("%sService");//去掉服务默认前缀
gc.setDateType(DateType.ONLY_DATE);//设置时间类型
// gc.setSwagger2(true); //实体属性 swagger注解
mpg.setGlobalConfig(gc);
// 数据源配置
DataSourceConfig dsc = new DataSourceConfig();
dsc.setUrl("jdbc:mysql://localhost:3306/shop?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2B8");
dsc.setDriverName("com.mysql.cj.jdbc.Driver");
dsc.setUsername("root");
dsc.setPassword("lj123456");
mpg.setDataSource(dsc);
// 包配置
PackageConfig pc = new PackageConfig();
pc.setParent("com.liubujun");
pc.setMapper("mapper");
pc.setXml("mapper.xml");
pc.setEntity("pojo");
pc.setService("service");
pc.setServiceImpl("service.impl");
pc.setController("controller");
mpg.setPackageInfo(pc);
// 策略配置
StrategyConfig sc = new StrategyConfig();
sc.setNaming(NamingStrategy.underline_to_camel);
sc.setColumnNaming(NamingStrategy.underline_to_camel);
sc.setEntityLombokModel(true);//自动lombok
sc.setRestControllerStyle(true);
sc.setControllerMappingHyphenStyle(true);
sc.setLogicDeleteFieldName("deleted");//设置逻辑删除
// sc.setTablePrefix("tbl_"); 设置表名前缀
sc.setInclude(scanner("表名，多个英文逗号分割").split(","));
mpg.setStrategy(sc);
// 生成代码
mpg.execute();
}
}
?6）测试：
输入想要生成相关配置的表名
?结果如下：
