一、首先通过IDEA创建一个Springboot项目

二、引入相关依赖

 1 <dependencies>
 2         <dependency>
 3             <groupId>org.springframework.boot</groupId>
 4             <artifactId>spring-boot-starter-web</artifactId>
 5         </dependency>
 6 
 7         <dependency>
 8             <groupId>org.springframework.boot</groupId>
 9             <artifactId>spring-boot-starter-test</artifactId>
10             <scope>test</scope>
11         </dependency>
12 
13         <!-- 引入mybatis-plus依赖 -->
14         <dependency>
15             <groupId>com.baomidou</groupId>
16             <artifactId>mybatis-plus-generator</artifactId>
17             <version>3.4.1</version>
18         </dependency>
19 
20         <!-- 添加 模板引擎 依赖，MyBatis-Plus 支持 Velocity（默认） -->
21         <dependency>
22             <groupId>org.apache.velocity</groupId>
23             <artifactId>velocity-engine-core</artifactId>
24             <version>2.1</version>
25         </dependency>
26 
27         <!-- 添加mybatis-plus依赖 -->
28         <dependency>
29             <groupId>com.baomidou</groupId>
30             <artifactId>mybatis-plus-boot-starter</artifactId>
31             <version>3.4.1</version>
32         </dependency>
33 
34         <!-- 数据库驱动 -->
35         <dependency>
36             <groupId>mysql</groupId>
37             <artifactId>mysql-connector-java</artifactId>
38             <version>5.1.47</version>
39         </dependency>
40 
41         <!-- lombok -->
42         <dependency>
43             <groupId>org.projectlombok</groupId>
44             <artifactId>lombok</artifactId>
45         </dependency>
46 
47         <!-- 引入swagger -->
48         <dependency>
49             <groupId>io.springfox</groupId>
50             <artifactId>springfox-swagger2</artifactId>
51             <version>2.9.2</version>
52         </dependency>
53 
54         <dependency>
55             <groupId>io.springfox</groupId>
56             <artifactId>springfox-swagger-ui</artifactId>
57             <version>2.9.2</version>
58         </dependency>
59 
60     </dependencies>

三、在springboot全局配置文件中配置数据源

1 # 配置数据源
2 spring.datasource.driver-class-name=com.mysql.jdbc.Driver
3 spring.datasource.url=jdbc:mysql://localhost:3306/netshop?useUnicode=true&useSSL=false&characterEncoding=utf-8
4 spring.datasource.username=root
5 spring.datasource.password=123

四、编写MybatisPlus代码生成器的工具代码

 1 package com.lzp;
 2 
 3 import com.baomidou.mybatisplus.annotation.DbType;
 4 import com.baomidou.mybatisplus.annotation.FieldFill;
 5 import com.baomidou.mybatisplus.annotation.IdType;
 6 import com.baomidou.mybatisplus.generator.AutoGenerator;
 7 import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
 8 import com.baomidou.mybatisplus.generator.config.GlobalConfig;
 9 import com.baomidou.mybatisplus.generator.config.PackageConfig;
10 import com.baomidou.mybatisplus.generator.config.StrategyConfig;
11 import com.baomidou.mybatisplus.generator.config.po.TableFill;
12 import com.baomidou.mybatisplus.generator.config.rules.DateType;
13 import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
14 import org.junit.jupiter.api.Test;
15 import org.springframework.boot.test.context.SpringBootTest;
16 import java.util.ArrayList;
17 import java.util.List;
18 
19 @SpringBootTest
20 class MybatisPlusNetshopApplicationTests {
21 
22     @Test
23     void contextLoads() {
24         // 构造一个AutoGenerator
25         AutoGenerator autoGenerator = new AutoGenerator();
26 
27         // 配置 GlobalConfig
28         GlobalConfig gc = new GlobalConfig();
29         gc.setOutputDir(System.getProperty("user.dir") + "/src/main/java");
30         gc.setAuthor("LZP");
31         gc.setOpen(false);
32         // 是否覆盖
33         gc.setFileOverride(false);
34         // 去Service的I前缀
35         gc.setServiceName("%sService");
36         gc.setIdType(IdType.ID_WORKER);
37         gc.setDateType(DateType.ONLY_DATE);
38         gc.setSwagger2(true);
39         autoGenerator.setGlobalConfig(gc);
40 
41         // 配置 DataSourceConfig
42         DataSourceConfig dataSourceConfig = new DataSourceConfig();
43         dataSourceConfig.setUrl("jdbc:mysql://localhost:3306/netshop?useUnicode=true&useSSL=false&characterEncoding=utf-8");
44         dataSourceConfig.setDriverName("com.mysql.jdbc.Driver");
45         dataSourceConfig.setUsername("root");
46         dataSourceConfig.setPassword("123");
47         dataSourceConfig.setDbType(DbType.MYSQL);
48         autoGenerator.setDataSource(dataSourceConfig);
49 
50         // 配置包
51         PackageConfig pc = new PackageConfig();
52         pc.setModuleName("netshop");
53         pc.setParent("com.lzp");
54         pc.setController("controller");
55         pc.setService("service");
56         pc.setMapper("mapper");
57         pc.setEntity("pojo");
58         autoGenerator.setPackageInfo(pc);
59 
60         // 策略配置
61         StrategyConfig strategy = new StrategyConfig();
62         strategy.setNaming(NamingStrategy.underline_to_camel);
63         strategy.setColumnNaming(NamingStrategy.underline_to_camel);
64         strategy.setEntityLombokModel(true);
65         // 逻辑删除
66         strategy.setLogicDeleteFieldName("deleted");
67         // 配置自动填充
68         TableFill gmtCreate = new TableFill("create_time", FieldFill.INSERT);
69         TableFill gmtUpdate = new TableFill("update_time", FieldFill.INSERT_UPDATE);
70         List<TableFill> list = new ArrayList<>();
71         list.add(gmtCreate);
72         list.add(gmtUpdate);
73         strategy.setTableFillList(list);
74         // 乐观锁
75         strategy.setVersionFieldName("version");
76         strategy.setRestControllerStyle(true);
77         // localhost:8080/hello_id_2
78         strategy.setControllerMappingHyphenStyle(true);
79         autoGenerator.setStrategy(strategy);
80 
81         // 执行
82         autoGenerator.execute();
83     }
84 
85 }

运行效果：