Mybatis-Plus代码生成器使用详解

首先创建springboot的项目

配置maven依赖pom.xml

<dependencies>

        <!-- 数据库驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!-- lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <!-- mybatis-plus -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.0.5</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

    </dependencies>

配置数据库连接

server:
  port: 8081
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/test?useSSL=false&useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    username: root
    password: root
    type: com.alibaba.druid.pool.DruidDataSource
mybatis-plus:
  mapper-locations: classpath:mapper/*.xml
  global-config:
    db-config:
      id-type: auto
      field-strategy: NOT_EMPTY
      db-type: MYSQL
  configuration:
    map-underscore-to-camel-case: true
    call-setters-on-nulls: true
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

配置mybatis-plus的代码生成器GeneratorCode

public class GeneratorCode {
public static void main(String[] args) {
    // 构建一个代码自动生成器对象
    AutoGenerator mpg = new AutoGenerator();

    // 配置策略
    // 1、全局配置
    GlobalConfig gc = new GlobalConfig();
    String projectPath = System.getProperty("user.dir");
    gc.setOutputDir(projectPath+"/src/main/java");
    gc.setAuthor("作者名字");
    gc.setOpen(false);
    gc.setFileOverride(false); // 是否覆盖
    gc.setServiceName("%sService"); // 去Service的I前缀
    gc.setIdType(IdType.ID_WORKER);
    gc.setDateType(DateType.ONLY_DATE);
    gc.setSwagger2(true);// 是否开启swagger
    mpg.setGlobalConfig(gc);

    //2、设置数据源
    DataSourceConfig dsc = new DataSourceConfig();
    dsc.setUrl("jdbc:mysql://localhost:3306/test?useSSL=false&useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai");
    dsc.setDriverName("com.mysql.cj.jdbc.Driver");
    dsc.setUsername("root");
    dsc.setPassword("密码");
    dsc.setDbType(DbType.MYSQL);
    mpg.setDataSource(dsc);

    //3、包的配置
    PackageConfig pc = new PackageConfig();
    pc.setModuleName("模块名");
    pc.setParent("com.包名");
    pc.setEntity("entity");// 实体类包名
    pc.setMapper("mapper");// mapper包名
    pc.setService("service");// 业务层包名
    pc.setController("controller");// 控制层包名
    mpg.setPackageInfo(pc);

    //4、策略配置
    StrategyConfig strategy = new StrategyConfig();
    strategy.setInclude("表名1","表名2"); // 设置要映射的表名
    strategy.setNaming(NamingStrategy.underline_to_camel);
    strategy.setColumnNaming(NamingStrategy.underline_to_camel);
    strategy.setEntityLombokModel(true); // 自动lombok；
    strategy.setLogicDeleteFieldName("deleted"); // 逻辑删除
    // 自动填充配置
    TableFill gmtCreate = new TableFill("gmt_create", FieldFill.INSERT);
    TableFill gmtModified = new TableFill("gmt_modified",FieldFill.INSERT_UPDATE);
    ArrayList<TableFill> tableFills = new ArrayList<>();
    tableFills.add(gmtCreate);
    tableFills.add(gmtModified);
    strategy.setTableFillList(tableFills);
    // 乐观锁
    strategy.setVersionFieldName("version");
    strategy.setRestControllerStyle(true); // 驼峰命名
    strategy.setControllerMappingHyphenStyle(true); // 下划线转驼峰
    mpg.setStrategy(strategy);

    mpg.execute(); //执行
 }
}

运行main()方法，会惊奇的发现多了很多文件