【Mybatis-Plus】代码生成器示例（3.5.2+版本）

引入依赖

 		<!-- mysql 依赖-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.28</version>
            <scope>runtime</scope>
        </dependency>

        <!-- mybatis-plus 依赖-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.2</version>
        </dependency>

        <!-- mybatis-plus代码生成器 依赖-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.5.2</version>
        </dependency>

        <!--freemarker 依赖-->
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.31</version>
        </dependency>

生成器代码

package com.code.generator;

/*
 * @ClassName CodeGenerator
 * @description: 代码生成器
 * @author: 何翔
 * @Date 2022/7/4 18:50
 */

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.extension.service.IService;
import com.baomidou.mybatisplus.generator.FastAutoGenerator;
import com.baomidou.mybatisplus.generator.config.OutputFile;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.util.*;

public class CodeGenerator {
    
    

    // TODO 项目名称
    private static final String PROJECT_NAME = "code";
    // TODO 微服务项目模块名（可选，和单体二选一）
    private static final String CLOUD_NAME = "code-example";
   	// TODO 路径包名（生成的文件放在绝地路径下，为下面路径代码铺垫）
    private static final String PACKAGE_DIR = "/com/code/product/";
	// TODO 生成包名
    private static final String PACKAGE_EXE = "com.code.example";
  	// TODO 数据库地址
    private static final String URL = "jdbc:mysql://localhost:3306/db_code?useUnicode=true&characterEncoding =UTF-8&serverTimezone = Asia/Shanghai";
	// TODO 数据库用户名
    private static final String USERNAME = "root";
	// TODO 数据库密码
    private static final String PASSWORD = "root";
	// TODO  作者
    private static final String AUTHOR = "何翔";
	// TODO  去除的表前缀（可选）
    private static final String FieldPrefix = "ex_";
	// TODO 模板路径（可选）
    private static final String TEMPLATE_PATH = "/templates/entity.java";
    /**
     * 项目路径
     */
    private static final String PARENT_DIR = System.getProperty("user.dir");
    /**
     * xml路径
     */
    //private static final String XML_PATH = PARENT_DIR + "/"+PROJECT_NAME+"-mapper/src/main/resources/mapper"; //单体项目
    private static final String XML_PATH = PARENT_DIR + "/"+CLOUD_NAME+"/src/main/resources/mapper";
    /**
     * entity路径
     */
    //private static final String ENTITY_PATH = PARENT_DIR +"/"+PROJECT_NAME+"-entity/src/main/java"+PACKAGE_DIR+"entity";//单体项目
    private static final String ENTITY_PATH = PARENT_DIR +"/"+CLOUD_NAME+"/src/main/java"+PACKAGE_DIR+"entity";
    /**
     * mapper（Dao）路径
     */
    //private static final String MAPPER_PATH = PARENT_DIR +"/"+PROJECT_NAME+"-mapper/src/main/java"+PACKAGE_DIR+"mapper";//单体项目
    private static final String MAPPER_PATH = PARENT_DIR +"/"+CLOUD_NAME+"/src/main/java"+PACKAGE_DIR+"dao";
    /**
     * service路径
     */
    //private static final String SERVICE_PATH = PARENT_DIR +"/"+PROJECT_NAME+"-service/src/main/java"+PACKAGE_DIR+"service";//单体项目
    private static final String SERVICE_PATH = PARENT_DIR +"/"+CLOUD_NAME+"/src/main/java"+PACKAGE_DIR+"service";
    /**
     * serviceImpl路径
     */
    //private static final String SERVICE_IMPL_PATH = PARENT_DIR +"/"+PROJECT_NAME+"-service/src/main/java"+PACKAGE_DIR+"service/impl/";//单体项目
    private static final String SERVICE_IMPL_PATH = PARENT_DIR +"/"+CLOUD_NAME+"/src/main/java"+PACKAGE_DIR+"service/impl/";
    /**
     * controller路径
     */
    //private static final String CONTROLLER_PATH = PARENT_DIR +"/"+PROJECT_NAME+"-api/src/main/java"+PACKAGE_DIR+"controller";//单体项目
    private static final String CONTROLLER_PATH = PARENT_DIR +"/"+CLOUD_NAME+"/src/main/java"+PACKAGE_DIR+"controller";

    public static void main(String[] args) {
    
    
        FastAutoGenerator.create(URL, USERNAME, PASSWORD)
                // 全局配置
                .globalConfig(builder -> builder
                        // 设置作者
                        .author(AUTHOR)
                        // 开启swagger注解
                        .enableSwagger()
                        .disableOpenDir()
                )
                // 包配置
                .packageConfig(builder -> builder
                        .parent("")
                        .xml("mapper")
                        .entity(PACKAGE_EXE+".entity")
                        .mapper(PACKAGE_EXE+".dao")
                        .service(PACKAGE_EXE+".service")
                        .serviceImpl(PACKAGE_EXE+".service.impl")
                        .controller(PACKAGE_EXE+".controller")
                        .pathInfo(getPathInfo())
                )
                // 策略配置
                .strategyConfig((scanner, builder) ->
                        builder.addInclude(getTables(scanner.apply("请输入表名，多个表之间用英文逗号分隔，所有输入all")))
                        .addTablePrefix(FieldPrefix)
                        // entity
                        .entityBuilder()
                        .fileOverride()
                        .enableChainModel()
                        .fileOverride()
                        // 开启lombock
                        .enableLombok()
                        .enableTableFieldAnnotation()
                        //.logicDeleteColumnName("deleted")
                        //.logicDeletePropertyName("deleteFlag")
                        .idType(IdType.AUTO)
                        //.addTableFills(new Column("create_time", FieldFill.INSERT))
                        //.addTableFills(new Property("update_time", FieldFill.INSERT_UPDATE))
                        // controller
                        .controllerBuilder()
                        .fileOverride()
                        .enableRestStyle()
                        .formatFileName("%sController")
                        // service
                        .serviceBuilder()
                        .fileOverride()
                        .superServiceClass(IService.class)
                        .formatServiceFileName("%sService")
                        .formatServiceImplFileName("%sServiceImpl")
                        // mapper
                        .mapperBuilder()
                        .fileOverride()
                        .enableBaseResultMap()
                        .enableBaseColumnList()
                        .superClass(BaseMapper.class)
                        .formatMapperFileName("%sMapper")
                        .formatXmlFileName("%sMapper")
                        //.enableMapperAnnotation()
                )
                // 使用Freemarker引擎模板，默认的是Velocity引擎模板
                .templateConfig(builder -> {
    
    
                    // 实体类使用我们自定义模板
                    builder.entity("/templates/entity.java");
                })
                .templateEngine(new FreemarkerTemplateEngine())
                .execute();


    }
    /**
     * 获取路径信息map
     * @author 何翔
     */
    private static Map<OutputFile, String> getPathInfo() {
    
    
        Map<OutputFile, String> pathInfo = new HashMap<>(5);
        pathInfo.put(OutputFile.entity, ENTITY_PATH);
        pathInfo.put(OutputFile.mapper, MAPPER_PATH);
        pathInfo.put(OutputFile.service, SERVICE_PATH);
        pathInfo.put(OutputFile.serviceImpl, SERVICE_IMPL_PATH);
        pathInfo.put(OutputFile.controller, CONTROLLER_PATH);
        pathInfo.put(OutputFile.xml, XML_PATH);
        return pathInfo;
    }

    // 处理 all 情况
    protected static List<String> getTables (String tables){
    
    
        return "all".equals(tables) ? Collections.emptyList() : Arrays.asList(tables.split(","));
    }
}

自定义模板

模板代码（一般放置于当前resources包下的templates目录下）
例如：修改官方默认lombok表达，改为@Data

package ${package.Entity};

<#list table.importPackages as pkg>
import ${pkg};
</#list>
<#if swagger>
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
</#if>
<#if entityLombokModel>
import lombok.Data;
    <#if chainModel>
import lombok.experimental.Accessors;
    </#if>
</#if>

/**
 * <p>
 * ${table.comment!}
 * </p>
 *
 * @author ${author}
 * @since ${date}
 */
<#if entityLombokModel>
@Data
    <#if chainModel>
@Accessors(chain = true)
    </#if>
</#if>
<#if table.convert>
@TableName("${schemaName}${table.name}")
</#if>
<#if swagger>
@ApiModel(value = "${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}> {
<#elseif entitySerialVersionUID>
public class ${entity} implements Serializable {
<#else>
public class ${entity} {
</#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 swagger>
    @ApiModelProperty("${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 field.versionField>
    @Version
    </#if>
    <#-- 逻辑删除注解 -->
    <#if field.logicDeleteField>
    @TableLogic
    </#if>
    private ${field.propertyType} ${field.propertyName};
</#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>
    public ${field.propertyType} ${getprefix}${field.capitalName}() {
        return ${field.propertyName};
    }

    <#if chainModel>
    public ${entity} set${field.capitalName}(${field.propertyType} ${field.propertyName}) {
    <#else>
    public void set${field.capitalName}(${field.propertyType} ${field.propertyName}) {
    </#if>
        this.${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
    public 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>
}