MyBatis-Plus code is automatically generated

8. MyBatis-Plus code is automatically generated

MyBatis-Plus code automatic generation: The entity classes Entity, Mapper, Service, ServiceImpl and Controller can be automatically generated according to the data table.

Step 1: Create a SpringBoot blank project and check the relevant dependencies;

Step 2 pom.xml: Import MyBatis Plus Generator in ;

AutoGenerator is the code generator of MyBatis-Plus. Through AutoGenerator, the codes of Entity, Mapper, Mapper XML, Service, Controller and other modules can be quickly generated, which greatly improves the development efficiency.

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-generator</artifactId>
    <version>3.1.0</version>
</dependency>

<dependency>
    <groupId>org.apache.velocity</groupId>
    <artifactId>velocity</artifactId>
    <version>1.7</version>
</dependency>

Step 3: Write the startup class Main;

package com.trainingl;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.annotation.FieldFill;
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.po.TableFill;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;

import java.util.Arrays;
import java.util.List;

public class Main {
    
    
    public static void main(String[] args) {
    
    
        //创建对象
        AutoGenerator autoGenerator = new AutoGenerator();
        //数据源配置
        DataSourceConfig dataSourceConfig = new DataSourceConfig();
        // 数据库类型
        dataSourceConfig.setDbType(DbType.MYSQL);
        // url、用户名、密码
        dataSourceConfig.setUrl("jdbc:mysql://localhost/user?useUnicode=true&characterEncoding=UTF-8");
        dataSourceConfig.setUsername("root");
        dataSourceConfig.setPassword("123456");
        //同样地，这里要注意mysql驱动的版本5.x
        dataSourceConfig.setDriverName("com.mysql.jdbc.Driver");
        autoGenerator.setDataSource(dataSourceConfig);

        //全局配置
        GlobalConfig globalConfig = new GlobalConfig();
        globalConfig.setOutputDir(System.getProperty("user.dir")+"/src/main/java");
        globalConfig.setOpen(false);
        globalConfig.setAuthor("TrainingL");
        //去掉IService的I
        globalConfig.setServiceName("%sService");
        autoGenerator.setGlobalConfig(globalConfig);

        //包信息
        PackageConfig packageConfig = new PackageConfig();
        packageConfig.setParent("com.trainingl");
        packageConfig.setEntity("entity");
        //有时候把持久层记为dao或repository
        packageConfig.setMapper("mapper");
        packageConfig.setService("service");
        packageConfig.setServiceImpl("service.impl");
        packageConfig.setController("controller");
        autoGenerator.setPackageInfo(packageConfig);

        //策略配置
        StrategyConfig strategyConfig = new StrategyConfig();
        //设置要映射的表名（字符串用逗号隔开，多表）
        strategyConfig.setInclude("user");
        //设置生成实体类属性驼峰式命名
        strategyConfig.setNaming(NamingStrategy.underline_to_camel);
        strategyConfig.setColumnNaming(NamingStrategy.underline_to_camel);
        //给实体类加lombok注解
        strategyConfig.setEntityLombokModel(true);
        strategy.setLogicDeleteFieldName("deleted");
        //自动填充配置
        TableFill tableFill1 = new TableFill("create_time", FieldFill.INSERT);
        TableFill tableFill2 = new TableFill("update_time", FieldFill.INSERT_UPDATE);
        List<TableFill> list = Arrays.asList(tableFill1, tableFill2);
        strategyConfig.setTableFillList(list);
        //乐观锁
        strategy.setVersionFieldName("version");
        autoGenerator.setStrategy(strategyConfig);
        
        //启动
        autoGenerator.execute();
    }
}

The resulting directory structure is as follows: