本人使用的springboot版本为2.1.7,先引入依赖

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <scope>runtime</scope>
</dependency>
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>
<!-- mybatis plus 代码生成器依赖 -->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-generator</artifactId>
</dependency>

版本在父模块统一管理

<mysql-connetor-java.version>8.0.17</mysql-connetor-java.version>
<mybatis-plus-boot-starter.version>3.3.0</mybatis-plus-boot-starter.version>
<dependencyManagement>
<dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <version>${mysql-connetor-java.version}</version>
   <scope>runtime</scope>
</dependency>
<!--mybatis plus start-->
<dependency>
   <groupId>com.baomidou</groupId>
   <artifactId>mybatis-plus-boot-starter</artifactId>
   <version>${mybatis-plus-boot-starter.version}</version>
</dependency>
<dependency>
   <groupId>com.baomidou</groupId>
   <artifactId>mybatis-plus-generator</artifactId>
   <version>${mybatis-plus-boot-starter.version}</version>
</dependency>

//其余略

</dependencyManagement>

在这里多嘴一句,用了mybatis-plus,就要把mybatis的相关依赖都去掉,避免冲突,包括pageHelper也不要用springboot的

如下,去掉依赖:

<!--mybatis -->
<dependency>
   <groupId>org.mybatis.spring.boot</groupId>
   <artifactId>mybatis-spring-boot-starter</artifactId>
   <version>${mybatis-spring-boot-starter.version}</version>
</dependency>

<dependency>
   <groupId>com.github.pagehelper</groupId>
   <artifactId>pagehelper-spring-boot-starter</artifactId>
   <version>${pagehelper-spring-boot-starter.version}</version>
</dependency>

pageHelper依赖换为:

<!--pageHelper 处理分页 -->
<dependency>
   <groupId>com.github.pagehelper</groupId>
   <artifactId>pagehelper</artifactId>
   <version>4.0.0</version>
</dependency>

或者将mybatis相关的依赖包排除掉:

<dependency>
   <groupId>com.github.pagehelper</groupId>
   <artifactId>pagehelper-spring-boot-starter</artifactId>
   <version>1.2.3</version>
   <exclusions>
      <exclusion>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis</artifactId>
      </exclusion>
      <exclusion>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis-spring</artifactId>
      </exclusion>
   </exclusions>
</dependency>

目前我是这样处理得,如果你们有更好的解决方法,欢迎提出来。

application.yml配置驼峰和简写

mybatis-plus:
  configuration:
    map-underscore-to-camel-case: true
  type-aliases-package: com.xxxx.xxx.base.entity

分页配置也很重要,别忘记了,不然分页是不生效的

@Configuration
public class MybatisPlusConfig {
    /**
     * 分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        return new PaginationInterceptor();
    }

}

自动生成代码工具类

package com.liveneo.platform.generator;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.DbColumnType;
import com.baomidou.mybatisplus.generator.config.rules.IColumnType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.io.File;
import java.util.*;

public class MybatisGenerator {
    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + ":");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotEmpty(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "!");
    }

    public static void main(String[] args) {
        // controller com.liveneo.system.web.controller
        //
//        String[] models = {"ls-dao","ls-dao","ls-service","ls-backend"};
        // 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 );
        gc.setAuthor("lijiazhi");
        gc.setOpen(false);

        gc.setBaseResultMap(true);
        gc.setServiceName("%sService");
        gc.setDateType(DateType.ONLY_DATE);
        // gc.setSwagger2(true); 实体属性 Swagger2 注解
        mpg.setGlobalConfig(gc);

        //包名配置
        PackageConfig packageConfig = new PackageConfig();
        packageConfig.setModuleName("dao");
        packageConfig.setParent("com.liveneo.scplatform.base");
        mpg.setPackageInfo(packageConfig);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://127.0.0.1:3306/bjdl_zyjg_test?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("root");
        dsc.setDbType(DbType.MYSQL);
        dsc.setTypeConvert(new MySqlTypeConvert() {
            @Override
            public IColumnType processTypeConvert(GlobalConfig globalConfig, String fieldType) {
                String t = fieldType.toLowerCase();
                if (t.contains("tinyint")) {
                    return DbColumnType.BYTE;
                } else {

                    return super.processTypeConvert(globalConfig, fieldType);
                }
            }
        });
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setParent("");
        pc.setEntity("com.xxx.xx.base.entity");
        pc.setMapper("com.xxx.xx.base.mapper");
        pc.setService("com.xxx.xx.base.service");
        pc.setServiceImpl("com.xxx.xx.base.service.impl");
        pc.setController("com.xxx.system.web.controller");
        mpg.setPackageInfo(pc);

        // 自定义配置

        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模板引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // 如果模板引擎是 velocity
        // String templatePath = "/templates/mapper.xml.vm";

        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/sc_dao/src/main/resources/mapper/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        focList.add(new FileOutConfig("/templates/controller.java.ftl") {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/sc_pc/src/main/java/com/xxx/xx/web/controller/" + tableInfo.getEntityName() + "Controller" + StringPool.DOT_JAVA;
            }
        });
        focList.add(new FileOutConfig("/templates/service.java.ftl") {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/sc_service/src/main/java/com/xxx/xx/base/service/" + tableInfo.getEntityName() + "Service" + StringPool.DOT_JAVA;
            }
        });
        focList.add(new FileOutConfig("/templates/serviceImpl.java.ftl") {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/sc_service/src/main/java/com/xxx/xx/base/service/impl/" + tableInfo.getEntityName() + "ServiceImpl" + StringPool.DOT_JAVA;
            }
        });
        focList.add(new FileOutConfig("/templates/mapper.java.ftl") {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/sc_dao/src/main/java/com/xxx/xx/base/mapper/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_JAVA;
            }
        });
        focList.add(new FileOutConfig("/templates/entity.java.ftl") {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/sc_dao/src/main/java/com/xxx/xx/base/entity/" + tableInfo.getEntityName()  + StringPool.DOT_JAVA;
            }
        });
        /*
        cfg.setFileCreate(new IFileCreate() {
            @Override
            public boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {
                // 判断自定义文件夹是否需要创建
                checkDir("调用默认方法创建的目录");
                return false;
            }
        });
        */
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();

        // 配置自定义输出模板
        //指定自定义模板路径,注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别
        // templateConfig.setEntity("templates/entity2.java");
        // templateConfig.setService();
        // templateConfig.setController();

        templateConfig.setEntity(null);
        templateConfig.setController(null);
        templateConfig.setService(null);
        templateConfig.setServiceImpl(null);
        templateConfig.setMapper(null);
        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setTablePrefix("sc_");
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        strategy.setSuperEntityClass("com.xxx.xx.base.mybatiesplus.BaseEntity");
        strategy.setEntityLombokModel(false);
        strategy.setSuperServiceClass("com.xxx.xx.base.mybatiesplus.IBaseService");
        strategy.setSuperServiceImplClass("com.xxx.xx.base.mybatiesplus.impl.BaseServiceImpl");
        strategy.setRestControllerStyle(false);
        // 公共父类
        strategy.setSuperControllerClass("com.xxx.xx.pc.base.controller.BaseController");
        // 写于父类中的公共字段
        strategy.setSuperEntityColumns("id", "create_by", "create_time", "update_by", "update_time");
        strategy.setInclude(scanner("表名,多个英文逗号分割").split(","));
        //使用驼峰mapper映射名
        strategy.setControllerMappingHyphenStyle(false);
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }
}

这样的话controller、service、mapper会分别生成在模块sc_pc、sc_service、sc_dao模块中

单模块应用就比较简单了,这里也贴一下把,有需要的可以参考下:

package com.liveneo.dwtplatform.generator;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.DbColumnType;
import com.baomidou.mybatisplus.generator.config.rules.IColumnType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class MybatisGenerator {


    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + ":");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotEmpty(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");
        gc.setAuthor("lijiazhi");
        gc.setOpen(false);
        gc.setBaseResultMap(true);
        gc.setServiceName("%sService");
        gc.setDateType(DateType.ONLY_DATE);
        // gc.setSwagger2(true); 实体属性 Swagger2 注解
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://127.0.0.1/bjdl_zyjg_test?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull");
        // dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("root");
        dsc.setDbType(DbType.MYSQL);
        dsc.setTypeConvert(new MySqlTypeConvert(){
            @Override
            public IColumnType processTypeConvert(GlobalConfig globalConfig, String fieldType) {
                String t = fieldType.toLowerCase();
                if (t.contains("tinyint")) {
                    return DbColumnType.BYTE;
                } else {

                    return super.processTypeConvert(globalConfig, fieldType);
                }
            }
        });
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setParent("com.liveneo.dwtplatform");
        mpg.setPackageInfo(pc);

        // 自定义配置

        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模板引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // 如果模板引擎是 velocity
        // String templatePath = "/templates/mapper.xml.vm";

        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/src/main/resources/mapper/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        /*
        cfg.setFileCreate(new IFileCreate() {
            @Override
            public boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {
                // 判断自定义文件夹是否需要创建
                checkDir("调用默认方法创建的目录");
                return false;
            }
        });
        */
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();

        // 配置自定义输出模板
        //指定自定义模板路径,注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别
        // templateConfig.setEntity("templates/entity2.java");
        // templateConfig.setService();
        // templateConfig.setController();

        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setTablePrefix("sc_");
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        strategy.setSuperEntityClass("com.liveneo.dwtplatform.base.support.BaseEntity");
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        // 公共父类
        strategy.setSuperControllerClass("com.liveneo.dwtplatform.base.support.BaseController");
        // 写于父类中的公共字段
        strategy.setSuperEntityColumns("id","create_by","create_time","update_by","update_time");
        strategy.setInclude(scanner("表名,多个英文逗号分割").split(","));
        //使用驼峰mapper映射名
        strategy.setControllerMappingHyphenStyle(false);
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }

}