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MyBatis Plus Generator代码生成

时间：2024-06-18 16:03:04浏览次数：27  
标签：代码生成 String entity field Plus table MyBatis import public

一、MyBatis Plus Generator

MyBatis Plus是一个功能强大的持久层框架，它简化了MyBatis的使用，提供了许多便捷的功能。其中，MyBatis Plus Generator是一个强大的代码生成器，可以帮助我们快速地根据数据库表结构生成对应的实体类、映射文件和DAO接口。在MyBatis Plus Generator中，我们可以使用模板ftl文件来自定义生成的代码样式。本文将介绍如何使用MyBatis Plus Generator通过模板ftl文件生成代码。

二、使用介绍

2.1 引入依赖
   <!--mybatis-plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.4.1</version>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-annotation</artifactId>
            <version>3.4.1</version>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.4.1</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
  		
  		<dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
            <exclusions>
                <exclusion>
                    <groupId>io.swagger</groupId>
                    <artifactId>swagger-annotations</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>io.swagger</groupId>
                    <artifactId>swagger-models</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-annotations</artifactId>
            <version>1.5.21</version>
        </dependency>
        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-models</artifactId>
            <version>1.5.21</version>
        </dependency>
2.2 模版文件

在这里插入图片描述

在项目的resources文件夹下创建一个名为templates的文件夹，用于存放模板ftl文件。

2.2.1 controller.java.ftl
package ${package.Controller};

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
<#if restControllerStyle>
import org.springframework.web.bind.annotation.RestController;
<#else>
import org.springframework.stereotype.Controller;
</#if>
<#if swagger2>
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
</#if>
<#if superControllerClassPackage??>
import ${superControllerClassPackage};
</#if>
import ${package.Service}.${table.serviceName};

/**
 * @author ${author}
 * @description ${table.comment!}前端控制器
 * @date ${date}
 */
<#if swagger2>
@Api(tags = "${table.comment!}前端控制器")
</#if>
<#if restControllerStyle>
@RestController
<#else>
@Controller
</#if>
@RequestMapping("<#if package.ModuleName?? && package.ModuleName != "">/${package.ModuleName}</#if>/<#if controllerMappingHyphenStyle??>${controllerMappingHyphen}<#else>${table.entityPath}</#if>")
<#if kotlin>
class ${table.controllerName}<#if superControllerClass??> : ${superControllerClass}()</#if>
<#else>
<#if superControllerClass??>
public class ${table.controllerName} extends ${superControllerClass} {
<#else>
public class ${table.controllerName} {
</#if>
    @Resource
    private ${table.serviceName} ${table.entityPath}Service;

    @ApiOperation(value = "按id查询")
    @GetMapping("/single")
    public ResultBean<${entity}VO> queryById(Long id) {
        return ResultBean.success(${table.entityPath}Service.queryById(id));
    }

    @ApiOperation(value = "按id删除")
    @PostMapping("/delete/single")
    public ResultBean deleteById(Long id) {
        ${table.entityPath}Service.deleteById(id);
        return ResultBean.success();
    }

    @ApiOperation(value = "按id更新")
    @PostMapping("/update/single")
    public ResultBean<${entity}VO> update(@RequestBody ${entity}VO vo) {
        vo = ${table.entityPath}Service.update(vo);
        return ResultBean.success(vo);
    }

    @ApiOperation(value = "新增")
    @PostMapping("/insert/single")
    public ResultBean<${entity}VO> insert(@RequestBody ${entity}VO vo) {
        vo = ${table.entityPath}Service.insert(vo);
        return ResultBean.success(vo);
    }

}
</#if>
2.2.2 dto.java.ftl
package ${cfg.packageParent}.DTO;

<#list table.importPackages as pkg>
    <#if !(pkg?contains('mybatis') || pkg?contains('entity'))>
        <#if pkg == 'java.time.LocalDateTime'>
            import java.util.Date;
        <#else >
            import ${pkg};
        </#if>
    </#if>
</#list>
import java.io.Serializable;
<#if swagger2>
    import io.swagger.annotations.ApiModel;
    import io.swagger.annotations.ApiModelProperty;
</#if>

<#if entityLombokModel>
    import lombok.Data;
    import lombok.EqualsAndHashCode;
    <#if chainModel>
        import lombok.experimental.Accessors;
    </#if>
</#if>

/**
 * @author ${author}
 * @description ${table.comment!}VO
 * @date ${date}
 */
<#if entityLombokModel>
@Data
<#--@EqualsAndHashCode(callSuper = false)-->
<#--@Accessors(chain = true)-->
</#if>
<#if swagger2>
@ApiModel(value = "${entity}DTO对象", description = "${table.comment!} DTO")
</#if>
public class ${entity}DTO implements Serializable {

    private static final long serialVersionUID = 1L;
<#list table.fields as field>

    <#if field.comment!?length gt 0>
        <#if swagger2>
    /**
     * ${field.comment}
     */
    @ApiModelProperty(value = "${field.comment}")
        <#else>
    /**
    * ${field.comment}
    */
        </#if>
    </#if>
    <#if field.propertyType == 'LocalDateTime'>
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime ${field.propertyName};
    <#else>
    private ${field.propertyType} ${field.propertyName};
    </#if>
</#list>
<#------------  END 字段循环遍历  ---------->
<#if !entityLombokModel>
    <#list table.fields as field>
        <#if field.propertyType == "boolean">
            <#assign getprefix="is"/>
        <#else>
            <#assign getprefix="get"/>
        </#if>
        <#if field.propertyType == "LocalDateTime">
            <#assign betterPropertyType="Date"/>
        <#else>
            <#assign betterPropertyType="${field.propertyType}"/>
        </#if>

        public ${betterPropertyType} ${getprefix}${field.capitalName}() {
        return ${field.propertyName};
        }

        <#if chainModel>
            public ${entity} set${field.capitalName}(${betterPropertyType} ${field.propertyName}) {
        <#else>
            public void set${field.capitalName}(${betterPropertyType} ${field.propertyName}) {
        </#if>
        this.${field.propertyName} = ${field.propertyName};
        <#if chainModel>
            return this;
        </#if>
        }
    </#list>
</#if>
<#if !entityLombokModel>
    @Override
    public String toString() {
    return "${entity}{" +
    <#list table.commonFields as field>
        <#if field_index==0>
            "${field.propertyName}=" + ${field.propertyName} +
        <#else>
            ", ${field.propertyName}=" + ${field.propertyName} +
        </#if>
    </#list>
    <#list table.fields as field>
        <#if field_index==0>
            "${field.propertyName}=" + ${field.propertyName} +
        <#else>
            ", ${field.propertyName}=" + ${field.propertyName} +
        </#if>
    </#list>
    "}";
    }
</#if>
}
2.2.3 entity.java.ftl
package ${package.Entity};

<#list table.importPackages as pkg>
<#if pkg == 'java.time.LocalDateTime'>
import java.util.Date;
<#else >
import ${pkg};
</#if>
</#list>
<#if swagger2>
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
</#if>
<#if entityLombokModel>
import lombok.Data;
import lombok.EqualsAndHashCode;
    <#if chainModel>
import lombok.experimental.Accessors;
    </#if>
</#if>

/**
* @author ${author}
* @description ${table.comment!}实体
* @date ${date}
*/
<#if entityLombokModel>
@Data
    <#if superEntityClass??>
@EqualsAndHashCode(callSuper = true)
    <#else>
@EqualsAndHashCode(callSuper = false)
    </#if>
<#--    <#if chainModel>-->
<#--@Accessors(chain = true)-->
<#--    </#if>-->
</#if>
<#if table.convert>
@TableName("${table.name}")
</#if>
<#if swagger2>
@ApiModel(value="${entity}对象", description="${table.comment!}")
</#if>
<#if superEntityClass??>
public class ${entity} extends ${superEntityClass}<#if activeRecord><${entity}></#if> {
<#elseif activeRecord>
public class ${entity} extends Model<${entity}> {
<#else>
public class ${entity} implements Serializable {
</#if>

<#if entitySerialVersionUID>
    private static final long serialVersionUID = 1L;
</#if>
<#-- ----------  BEGIN 字段循环遍历  ---------->
<#list table.fields as field>

    <#if field.keyFlag>
        <#assign keyPropertyName="${field.propertyName}"/>
    </#if>
    <#if field.comment!?length gt 0>
        <#if swagger2>
    /**
     * ${field.comment}
     */
    @ApiModelProperty(value = "${field.comment}")
        <#else>
    /**
     * ${field.comment}
     */
        </#if>
    </#if>
    <#if field.keyFlag>
<#--         主键 -->
        <#if field.keyIdentityFlag>
    @TableId(value = "${field.annotationColumnName}", type = IdType.AUTO)
        <#elseif idType??>
    @TableId(value = "${field.annotationColumnName}", type = IdType.${idType})
        <#elseif field.convert>
    @TableId("${field.annotationColumnName}")
        </#if>
        <#-- 普通字段 -->
    <#elseif field.fill??>
    <#-- -----   存在字段填充设置   ----->
        <#if field.convert>
    @TableField(value = "${field.annotationColumnName}", fill = FieldFill.${field.fill})
        <#else>
    @TableField(fill = FieldFill.${field.fill})
        </#if>
    <#elseif field.convert>
    @TableField("${field.annotationColumnName}")
    </#if>
    <#-- 乐观锁注解 -->
    <#if (versionFieldName!"") == field.name>
    @Version
    </#if>
    <#-- 逻辑删除注解 -->
    <#if (logicDeleteFieldName!"") == field.name>
    @TableLogic
    </#if>
    <#if field.propertyType == 'LocalDateTime'>
    private Date ${field.propertyName};
    <#else>
    private ${field.propertyType} ${field.propertyName};
    </#if>
</#list>
<#------------  END 字段循环遍历  ---------->
<#if !entityLombokModel>
    <#list table.fields as field>
        <#if field.propertyType == "boolean">
            <#assign getprefix="is"/>
        <#else>
            <#assign getprefix="get"/>
        </#if>
        <#if field.propertyType == "LocalDateTime">
            <#assign betterPropertyType="Date"/>
        <#else>
            <#assign betterPropertyType="${field.propertyType}"/>
        </#if>

    public ${betterPropertyType} ${getprefix}${field.capitalName}() {
        return ${field.propertyName};
    }

    <#if chainModel>
    public ${entity} set${field.capitalName}(${betterPropertyType} ${field.propertyName}) {
    <#else>
    public void set${field.capitalName}(${betterPropertyType} ${field.propertyName}) {
    </#if>
        this.${field.propertyName} = ${field.propertyName};
        <#if chainModel>
        return this;
        </#if>
    }
    </#list>
</#if>

<#if entityColumnConstant>
    <#list table.fields as field>
    public static final String ${field.name?upper_case} = "${field.name}";

    </#list>
</#if>
<#if activeRecord>
    @Override
    protected Serializable pkVal() {
    <#if keyPropertyName??>
        return this.${keyPropertyName};
    <#else>
        return null;
    </#if>
    }

</#if>
<#if !entityLombokModel>
    @Override
    public String toString() {
        return "${entity}{" +
    <#list table.fields as field>
        <#if field_index==0>
            "${field.propertyName}=" + ${field.propertyName} +
        <#else>
            ", ${field.propertyName}=" + ${field.propertyName} +
        </#if>
    </#list>
        "}";
    }
</#if>
}
2.2.4 mapper.java.ftl
package ${package.Mapper};

<#--import ${package.Entity}.${entity};-->
import ${superMapperClassPackage};
<#--import ${cfg.packageParent}.vo.${entity}VO;-->
import java.util.List;

import javax.validation.constraints.NotNull;

/**
 * @author ${author}
 * @description ${table.comment!} Mapper 接口
 * @date ${date}
 */
<#if kotlin>
interface ${table.mapperName} : ${superMapperClass}<${entity}>
<#else>
public interface ${table.mapperName} extends ${superMapperClass}<${entity}> {
    List<${entity}> queryByCondition(@NotNull ${entity}VO condition);
}
</#if>
2.2.5 mapper.xml.ftl
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="${package.Mapper}.mybatis.mapper.${table.mapperName}">

    <#if enableCache>
        <!-- 开启二级缓存 -->
        <cache type="org.mybatis.caches.ehcache.LoggingEhcache"/>

    </#if>
    <#if baseResultMap>
        <!-- 通用查询映射结果 -->
        <resultMap id="BaseResultMap" type="${package.Entity}.mybatis.entity.${entity}">
            <#list table.fields as field>
                <#if field.keyFlag><#--生成主键排在第一位-->
            <id column="${field.name}" property="${field.propertyName}"/>
                </#if>
            </#list>
            <#list table.commonFields as field><#--生成公共字段 -->
            <result column="${field.name}" property="${field.propertyName}"/>
            </#list>
            <#list table.fields as field>
                <#if !field.keyFlag><#--生成普通字段 -->
            <result column="${field.name}" property="${field.propertyName}"/>
                </#if>
            </#list>
        </resultMap>

    </#if>
    <#if baseColumnList>
        <!-- 通用查询结果列 -->
        <sql id="Base_Column_List">
            <#list table.commonFields as field>
                ${field.columnName},
            </#list>
            ${table.fieldNames}
        </sql>
    </#if>
    <select id="queryByCondition" resultMap="BaseResultMap" parameterType="${cfg.packageParent}.dto.${entity}VO">
        SELECT
        <include refid="Base_Column_List"/>
        FROM ${table.name}
        <where>
            <#list table.commonFields as field><#--生成公共字段 -->
            <#if field.propertyType == 'String'>
            <if test="${field.propertyName} != null and ${field.propertyName} != ''">
            <#else>
            <if test="${field.propertyName} != null">
            </#if>
            <#if field.propertyType == 'String'>
                AND ${field.annotationColumnName} LIKE CONCAT('%', ${"#{"}${field.propertyName}${"}"}, '%')
                <#else>
                AND ${field.annotationColumnName} = ${"#{"}${field.propertyName}${"}"}
                </#if>
            </if>
            </#list>
            <#list table.fields as field>
            <#if field.propertyType == 'String'>
            <if test="${field.propertyName} != null and ${field.propertyName} != ''">
            <#else>
            <#if field.propertyType == 'String'>
            <if test="${field.propertyName} != null and ${field.propertyName} != ''">
            <#else>
            <if test="${field.propertyName} != null">
            </#if>
            </#if>
            <#if field.propertyType == 'String'>
                AND ${field.annotationColumnName} LIKE CONCAT('%', ${"#{"}${field.propertyName}${"}"}, '%')
            <#else>
                AND ${field.annotationColumnName} = ${"#{"}${field.propertyName}${"}"}
            </#if>
            </if>
            </#list>
        </where>
    </select>
</mapper>
2.2.6 service.java.ftl
package ${package.Service};

import ${superServiceClassPackage};

/**
 * @author ${author}
 * @description ${table.comment!}服务类
 * @date ${date}
 */
<#if kotlin>
    interface ${table.serviceName} : ${superServiceClass}<${entity}>
<#else>
public interface ${table.serviceName}  {

    ${entity}DTO queryById(Long id);

    ${entity}DTO update(${entity}DTO dto);

    ${entity}DTO insert(${entity}DTO dto);

    void deleteById(Long id);
 }
</#if>
2.2.7 serviceImpl.java.ftl
package ${package.ServiceImpl};

import java.util.List;
import java.util.ArrayList;
import javax.validation.constraints.NotNull;

import ${package.Service}.${table.serviceName};
import ${superServiceImplClassPackage};

import org.springframework.stereotype.Service;
import org.springframework.beans.BeanUtils;
import javax.annotation.Resource;

/**
 * @author ${author}
 * @description ${table.comment!} 服务实现类
 * @date ${date}
 */
@Service
<#if kotlin>
open class ${table.serviceImplName} : ${superServiceImplClass}<${table.mapperName}, ${entity}>(), ${table.serviceName} {

}
<#else>
public class ${table.serviceImplName} extends ServiceImpl<${table.mapperName}, ${entity}> implements ${table.serviceName} {
    @Resource
    private ${table.mapperName} ${table.entityPath}Mapper;


    private List<${entity}DTO> toDTOList(@NotNull List<${entity}> entities) {
        List<${entity}DTO> dtoList = new ArrayList<>(entities.size());
        for (${entity} entity : entities) {
            dtoList.add(toDTO(entity));
        }
        return dtoList;
    }

    private ${entity}DTO toDTO(@NotNull ${entity} entity) {
        ${entity}DTO dto = new ${entity}DTO();
        BeanUtils.copyProperties(entity, dto);
        return dto;
    }

    @Override
    public ${entity}DTO queryById(@NotNull Long id) {
        ${entity} entity = ${table.entityPath}Mapper.selectById(id);
        return toDTO(entity);
    }

    @Override
    public ${entity}DTO update(@NotNull ${entity}DTO dto) {
        ${entity} entity = ${table.entityPath}Mapper.selectById(dto.getId());
        if (entity == null) {
            // 不存在
            return null;
        }
        BeanUtils.copyProperties(dto, entity, "id");
        ${table.entityPath}Mapper.updateById(entity);
        return dto;
    }

    @Override
    public ${entity}DTO insert(@NotNull ${entity}DTO dto) {
        ${entity} entity = new ${entity}();
        BeanUtils.copyProperties(dto, entity, "id");
        ${table.entityPath}Mapper.insert(entity);
        return toDTO(entity);
    }

    @Override
    public void deleteById(@NotNull Long id) {
        ${table.entityPath}Mapper.deleteById(id);
    }
}
</#if>
2.3 Swagger配置类
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

/**
 * @author Jerryean
 * @description swagger配置类
 * @date 2024/3/13
 **/
@Configuration
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket docket() {

        return new Docket(DocumentationType.SWAGGER_2)
                .enable(true)
                .apiInfo(apiInfo())
                .groupName("默认")
//                .pathMapping("/test/api/web")
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.test.web.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("接口文档")
                .description("接口文档")
                .version("1.0")
                .build();
    }
}
2.4 Generator逻辑

在这里插入图片描述

import cn.hutool.core.io.FileUtil;
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
import lombok.extern.slf4j.Slf4j;

import java.awt.*;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Jerryean
 * @date 2023/6/14
 */
@Slf4j
public class CodeGenerator {
    static String entityDir;
    static String voDir;
    static String mapperDir;
    static String mapperXmlDir;
    static String serviceDir;
    static String controllerDir;
    static String serviceImplDir;

    // 生成路径
    static final String PRO_PATH = "D:\\companyCode\\";
    static final String CODE_PATH = "D:\\companyCode\\code\\";
    static final String XML_PATH = "D:\\companyCode\\mapper\\";
    static final String OPEN_DIR = "D:\\companyCode\\";
    // 是否覆盖
    static final boolean override = true;
    // 父类包
    static final String parentPkg = "com.cisdi";
    static final String author = "Jerryean";
    // 模板路径
    static final String templatePath = "/templates";
    // 生成的表
    static final String[] dataTables = {
            "student", "teacher"
    };

    private static class DataBaseConfig {
        static final String url = "jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=UTC";
        static final String username = "root";
        static final String password = "pwd123456";
    }

    public static void main(String[] args) {
        // 代码生成器
        AutoGenerator autoGenerator = new AutoGenerator();
        // 初始化输出文件夹
        init(
        );

        // 删除之前生成的数据
        if (override) {
            delDir();
        }
        // 全局配置
        configGlobal(autoGenerator);
        // pkg设置
        configPkg(autoGenerator);
        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setDbType(DbType.MYSQL);
        dsc.setUrl(DataBaseConfig.url);
        dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername(DataBaseConfig.username);
        dsc.setPassword(DataBaseConfig.password);
        autoGenerator.setDataSource(dsc);
        // 配置指定自定义模板参数和类型
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                Map<String, Object> map = new HashMap<>();
                map.put("baseResultMap", true);
                map.put("packageParent", parentPkg);
                this.setMap(map);
            }
        };
        List<FileOutConfig> focList = new ArrayList<>();
        importTemplate(focList);
        cfg.setFileOutConfigList(focList);
        autoGenerator.setCfg(cfg);

        // 配置策略
        StrategyConfig strategyConfig = new StrategyConfig();
        strategyConfig.setEntityLombokModel(true);
        // 包含的表
        strategyConfig.setInclude(dataTables);
        strategyConfig.setNaming(NamingStrategy.underline_to_camel);
        strategyConfig.setColumnNaming(NamingStrategy.underline_to_camel);
        strategyConfig.setRestControllerStyle(true);
        autoGenerator.setStrategy(strategyConfig);
        // 配置模板
        configTemplate(autoGenerator);
        // 执行
        autoGenerator.execute();

        //执行完之后打开
        try {
            // 要打开的文件夹路径
            File folder = new File(OPEN_DIR);
            // 打开文件夹
            Desktop.getDesktop().open(folder);
        } catch (IOException ignored) {
        }
    }

    static void init() {
        entityDir = CodeGenerator.CODE_PATH + "/entity";
        voDir = CodeGenerator.CODE_PATH + "/dto";
        mapperDir = CodeGenerator.CODE_PATH + "/mapper";
        mapperXmlDir = CodeGenerator.XML_PATH;
        serviceDir = CodeGenerator.CODE_PATH + "/service";
        serviceImplDir = CodeGenerator.CODE_PATH + "/service/impl";
        controllerDir = CodeGenerator.CODE_PATH + "/controller";
    }

    static void delDir() {
        List<String> dirs = new ArrayList<>();
        dirs.add(entityDir);
        dirs.add(voDir);
        dirs.add(mapperDir);
        dirs.add(mapperXmlDir);
        dirs.add(serviceDir);
        dirs.add(serviceImplDir);
        dirs.add(controllerDir);
        for (String per : dirs) {
            if (FileUtil.exist(per)) {
                FileUtil.del(per);
            } else {
                log.warn("no dir{}", per);
            }
        }
    }

    static void importTemplate(List<FileOutConfig> focList) {
        String entityTemplatePath = CodeGenerator.templatePath + "/entity.java.ftl";
        String mapperTemplatePath = CodeGenerator.templatePath + "/mapper.java.ftl";
        String mapperXmlTemplatePath = CodeGenerator.templatePath + "/mapper.xml.ftl";
        String voTemplatePath = CodeGenerator.templatePath + "/dto.java.ftl";

        String controllerTemplatePath = CodeGenerator.templatePath + "/controller.java.ftl";
        String serviceTemplatePath = CodeGenerator.templatePath + "/service.java.ftl";
        String serviceImplTemplatePath = CodeGenerator.templatePath + "/serviceImpl.java.ftl";
        // 自定义输出配置
        // 自定义配置会被优先输出

        focList.add(new FileOutConfig(entityTemplatePath) {
            @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 entityDir
                        + "/" + tableInfo.getEntityName() + ".java";
            }
        });

        focList.add(new FileOutConfig(mapperTemplatePath) {
            @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 mapperDir
                        + "/" + tableInfo.getEntityName() + "Mapper.java";
            }
        });
        focList.add(new FileOutConfig(mapperXmlTemplatePath) {
            @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 mapperXmlDir
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        focList.add(new FileOutConfig(voTemplatePath) {
            @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 voDir
                        + "/" + tableInfo.getEntityName() + "DTO.java";
            }
        });

        focList.add(new FileOutConfig(controllerTemplatePath) {
            @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 controllerDir
                        + "/" + tableInfo.getEntityName() + "Controller.java";
            }
        });
        focList.add(new FileOutConfig(serviceTemplatePath) {
            @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 serviceDir
                        + "/" + tableInfo.getEntityName() + "Service.java";
            }
        });
        focList.add(new FileOutConfig(serviceImplTemplatePath) {
            @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 serviceImplDir
                        + "/" + tableInfo.getEntityName() + "ServiceImpl.java";
            }
        });
    }

    private static void configGlobal(AutoGenerator autoGenerator) {
        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        gc.setOutputDir(CodeGenerator.PRO_PATH + "/src/main/java");
        gc.setAuthor(CodeGenerator.author);
        gc.setOpen(false);
        gc.setSwagger2(true);
        gc.setBaseResultMap(true);
        gc.setBaseColumnList(true);
        gc.setServiceName("%s" + ConstVal.SERVICE);
        autoGenerator.setGlobalConfig(gc);
    }

    private static void configPkg(AutoGenerator autoGenerator) {
        PackageConfig packageConfig = new PackageConfig();
        packageConfig.setParent(parentPkg);
        packageConfig.setController("controller");
        packageConfig.setService("service");
        packageConfig.setServiceImpl("service.impl");
        packageConfig.setMapper("mapper");
        packageConfig.setEntity("entity");
        autoGenerator.setPackageInfo(packageConfig);
    }

    private static void configTemplate(AutoGenerator autoGenerator) {
        TemplateConfig templateConfig = new TemplateConfig();
        // 只使用前面的自定义生成模板
        templateConfig.setController("");
        templateConfig.setService("");
        templateConfig.setServiceImpl("");
        templateConfig.setEntity("");
        templateConfig.setMapper("");

        templateConfig.setXml(null);
        autoGenerator.setTemplate(templateConfig);
        autoGenerator.setTemplateEngine(new FreemarkerTemplateEngine());
    }

}

三、总结

MyBatis-Plus使用FTL模板能高效自动生成规范易读的代码，支持灵活定制和多平台，降低维护成本，提高开发效率。以上生成代码所用的逻辑，欢迎大家可以取下来使用。

标签：代码生成,String,entity,field,Plus,table,MyBatis,import,public
From： https://blog.csdn.net/weixin_42039228/article/details/139764104

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