MybatisPlus--代码生成器/根据表生成代码--使用/方法/教程/实例

ゞ浴缸里的玫瑰 2022-09-13 00:22 512阅读 0赞

原文网址：[MybatisPlus--代码生成器/根据表生成代码--使用/方法/教程/实例\_IT利刃出鞘的博客-CSDN博客][MybatisPlus--_--_IT_-CSDN]

# 简介 #

**说明**

本文用实例介绍MybatisPlus的代码生成器。

MybatisPlus的代码生成器很好用，可以根据表来生成Entity、Mapper、Service、Controller，非常方便，只需要配置数据库信息然后运行代码即可。

默认就可以生成Entity、Mapper、Service、Controller，当然也可以自定义格式，本文将介绍默认格式的方法以及自定义格式的方法。

掌握了本文介绍的生成器的方法，可以将其应用到很多根据数据库生成代码的场景，比如：JPA等。

**官网**

[代码生成器 | MyBatis-Plus][_ MyBatis-Plus]  
[代码生成器配置 | MyBatis-Plus][_ MyBatis-Plus 1]

# 用法1：自定义格式 #

## 步骤1：搭建 ##

**创建表结构**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBASVTliKnliIPlh7rpnpg_size_20_color_FFFFFF_t_70_g_se_x_16][]

**pom.xml**

<?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 
 <groupId>org.example</groupId>
 <artifactId>GenerateCode</artifactId>
 <version>1.0-SNAPSHOT</version>
 
 <dependencies>
 <dependency>
 <groupId>com.baomidou</groupId>
 <artifactId>mybatis-plus-generator</artifactId>
 <version>3.4.0</version>
 </dependency>
 
 <dependency>
 <groupId>org.freemarker</groupId>
 <artifactId>freemarker</artifactId>
 <version>2.3.30</version>
 </dependency>
 
 <dependency>
 <groupId>org.slf4j</groupId>
 <artifactId>slf4j-api</artifactId>
 <version>1.7.30</version>
 </dependency>
 
 <dependency>
 <groupId>org.slf4j</groupId>
 <artifactId>slf4j-simple</artifactId>
 <version>1.7.30</version>
 </dependency>
 
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>8.0.21</version>
 </dependency>
 </dependencies>
 
 </project>

因为我后边用的是freemarker（.ftl）作为模板，所以引入freemarker依赖。

后缀的含义：.ftl：freemarker；.vm：velocity；.btl：beetl。

其他两种格式的依赖为：

compile "org.apache.velocity:velocity-engine-core:2.2"
    compile "com.ibeetl:beetl:3.1.8.RELEASE"

## 步骤2：放置模板 ##

找到mybatis-plus-generater依赖包，查看它的模板文件：templates下边都是模板文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZlaXlpbmcwY2FuZ2xhbmc_size_16_color_FFFFFF_t_70][]

本处使用.ftl文件（freemarker格式）进行修改。 修改后放到resources目录下的template\_mp文件夹下

### **修改后的格式** ###

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBASVTliKnliIPlh7rpnpg_size_12_color_FFFFFF_t_70_g_se_x_16][]

**MyController.java.ftl**

import org.springframework.web.bind.annotation.RequestMapping;
 <#if restControllerStyle>
 import org.springframework.web.bind.annotation.RestController;
 <#else>
 import org.springframework.stereotype.Controller;
 </#if>
 <#if superControllerClassPackage??>
 import ${superControllerClassPackage};
 </#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>
 
 }
 </#if>

**MyService.java.ftl**

import ${superServiceClassPackage};
 
 <#if kotlin>
 interface ${table.serviceName} : ${superServiceClass}<${entity}>
 <#else>
 public interface ${table.serviceName} extends ${superServiceClass}<${entity}> {
 
 }
 </#if>

**MyServiceImpl.java.ftl**

import ${superServiceImplClassPackage};
 import org.springframework.stereotype.Service;
 
 @Service
 <#if kotlin>
 open class ${table.serviceImplName} : ${superServiceImplClass}<${table.mapperName}, ${entity}>(), ${table.serviceName} {
 
 }
 <#else>
 public class ${table.serviceImplName} extends ${superServiceImplClass}<${table.mapperName}, ${entity}> implements ${table.serviceName} {
 
 }
 </#if>

**MyMapper.java.ftl**

import ${superMapperClassPackage};
 
 @Repository
 <#if kotlin>
 interface ${table.mapperName} : ${superMapperClass}<${entity}>
 <#else>
 public interface ${table.mapperName} extends ${superMapperClass}<${entity}> {
 
 }
 </#if>

**MyEntity.java.ftl**

<#list table.importPackages as pkg>
 import ${pkg};
 </#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>
 
 <#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 ${entity} {
 </#if>
 <#-- ---------- BEGIN 字段循环遍历 ---------->
 <#list table.fields as field>
 <#if field.keyFlag>
 <#assign keyPropertyName="${field.propertyName}"/>
 </#if>
 <#if field.comment!?length gt 0>
 <#if swagger2>
 @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>
 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
 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>
 }

### **原来的格式** ###

**controller.java.ftl**

package ${package.Controller};
 
 import org.springframework.web.bind.annotation.RequestMapping;
 
 <#if restControllerStyle>
 import org.springframework.web.bind.annotation.RestController;
 <#else>
 import org.springframework.stereotype.Controller;
 </#if>
 <#if superControllerClassPackage??>
 import ${superControllerClassPackage};
 </#if>
 
 /**
 * 
 * ${table.comment!} 前端控制器
 * 
 *
 * @author ${author}
 * @since ${date}
 */
 <#if restControllerStyle>
 @RestController
 <#else>
 @Controller
 </#if>
 @RequestMapping("<#if package.ModuleName?? && package.ModuleName != "">/${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>
 
 }
 </#if>

**service.java.ftl**

package ${package.Service};
 
 import ${package.Entity}.${entity};
 import ${superServiceClassPackage};
 
 /**
 * 
 * ${table.comment!} 服务类
 * 
 *
 * @author ${author}
 * @since ${date}
 */
 <#if kotlin>
 interface ${table.serviceName} : ${superServiceClass}<${entity}>
 <#else>
 public interface ${table.serviceName} extends ${superServiceClass}<${entity}> {
 
 }
 </#if>

**serviceImpl.java.ftl**

package ${package.ServiceImpl};
 
 import ${package.Entity}.${entity};
 import ${package.Mapper}.${table.mapperName};
 import ${package.Service}.${table.serviceName};
 import ${superServiceImplClassPackage};
 import org.springframework.stereotype.Service;
 
 /**
 * 
 * ${table.comment!} 服务实现类
 * 
 *
 * @author ${author}
 * @since ${date}
 */
 @Service
 <#if kotlin>
 open class ${table.serviceImplName} : ${superServiceImplClass}<${table.mapperName}, ${entity}>(), ${table.serviceName} {
 
 }
 <#else>
 public class ${table.serviceImplName} extends ${superServiceImplClass}<${table.mapperName}, ${entity}> implements ${table.serviceName} {
 
 }
 </#if>

**mapper.java.ftl**

package ${package.Mapper};
 
 import ${package.Entity}.${entity};
 import ${superMapperClassPackage};
 
 /**
 * 
 * ${table.comment!} Mapper 接口
 * 
 *
 * @author ${author}
 * @since ${date}
 */
 <#if kotlin>
 interface ${table.mapperName} : ${superMapperClass}<${entity}>
 <#else>
 public interface ${table.mapperName} extends ${superMapperClass}<${entity}> {
 
 }
 </#if>

**entity.java.ftl**

package ${package.Entity};
 
 <#list table.importPackages as pkg>
 import ${pkg};
 </#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>
 
 /**
 * 
 * ${table.comment!}
 * 
 *
 * @author ${author}
 * @since ${date}
 */
 <#if entityLombokModel>
 @Data
 <#if superEntityClass??>
 @EqualsAndHashCode(callSuper = true)
 <#else>
 @EqualsAndHashCode(callSuper = false)
 </#if>
 <#if chainModel>
 @Accessors(chain = true)
 </#if>
 </#if>
 <#if table.convert>
 @TableName("${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>
 @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>
 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
 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>
 }

## 步骤3：提供主类 ##

package com.example.generate;
    
    import com.baomidou.mybatisplus.generator.AutoGenerator;
    import com.baomidou.mybatisplus.generator.InjectionConfig;
    import com.baomidou.mybatisplus.generator.config.*;
    import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
    import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
    
    public class Generate {
        private static final String url = "jdbc:mysql://127.0.0.1:3306/blog" +
                "?useUnicode=true&characterEncoding=utf8" +
                "&allowPublicKeyRetrieval=True&useSSL=false" +
                "&serverTimezone=Asia/Shanghai";
        private static final String userName    = "root";
        private static final String password    = "222333";
        private static final String tableName   = "t_blog";
        private static final String tablePrefix = "t_";
    
        // 演示例子
        public static void main(String[] args) {
            // 代码生成器
            AutoGenerator autoGenerator = new AutoGenerator();
    
            // 全局配置
            GlobalConfig globalConfig = new GlobalConfig();
            String projectPath = System.getProperty("user.dir");
            globalConfig.setOutputDir(projectPath + "/src/main/java");
            globalConfig.setAuthor("xxx");
            globalConfig.setFileOverride(false);  //默认就是false
            globalConfig.setOpen(false);
            // gc.setBaseResultMap(true); // mapper.xml 生成 ResultMap
            // gc.setBaseColumnList(true); // mapper.xml 生成 ColumnList
    
            // 自定义文件命名，注意 %s 会自动填充表实体属性！
            globalConfig.setMapperName("%sMapper");
            // gc.setXmlName("%sDao");
            globalConfig.setServiceName("%sService");
            globalConfig.setServiceImplName("%sServiceImpl");
            globalConfig.setControllerName("%sController");
            // gc.setSwagger2(true); 实体属性 Swagger2 注解
            autoGenerator.setGlobalConfig(globalConfig);
    
            // 数据源配置
            DataSourceConfig dataSourceConfig = new DataSourceConfig();
    
            dataSourceConfig.setUrl(url);
            // dsc.setSchemaName("public");
            dataSourceConfig.setDriverName("com.mysql.cj.jdbc.Driver");
            dataSourceConfig.setUsername(userName);
            dataSourceConfig.setPassword(password);
            autoGenerator.setDataSource(dataSourceConfig);
    
            // 包配置
            PackageConfig packageConfig = new PackageConfig();
            // pc.setParent("com.example.generate.out");
            // pc.setModuleName("xxx");
            packageConfig.setParent("com.example.generate." + tableName.substring(tablePrefix.length()));
            autoGenerator.setPackageInfo(packageConfig);
    
            // 自定义配置
            // InjectionConfig cfg = new InjectionConfig() {
            //     @Override
            //     public void initMap() {
            //         // to do nothing
            //     }
            // };
    
            // 配置自定义输出模板
            TemplateConfig templateConfig = new TemplateConfig();
            //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.setController("templates_mp/MyController.java");
            templateConfig.setService("templates_mp/MyService.java");
            templateConfig.setServiceImpl("templates_mp/MyServiceImpl.java");
            templateConfig.setMapper("templates_mp/MyMapper.java");
            templateConfig.setEntity("templates_mp/MyEntity.java");
            templateConfig.setXml(null);
            autoGenerator.setTemplate(templateConfig);
    
            // 策略配置
            StrategyConfig strategyConfig = new StrategyConfig();
            strategyConfig.setNaming(NamingStrategy.underline_to_camel);
            strategyConfig.setColumnNaming(NamingStrategy.underline_to_camel);
            //strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
            strategyConfig.setEntityLombokModel(true);
            strategyConfig.setRestControllerStyle(true);
    
            // 公共父类
            // strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
            // 写于父类中的公共字段
            // strategy.setSuperEntityColumns("id");
    
            // 表名
            strategyConfig.setInclude(tableName);
            strategyConfig.setTablePrefix(tablePrefix);
            autoGenerator.setStrategy(strategyConfig);
            strategyConfig.setControllerMappingHyphenStyle(true);
            autoGenerator.setTemplateEngine(new FreemarkerTemplateEngine());
            autoGenerator.execute();
        }
    }

## 步骤4：运行主类 ##

将“步骤3”代码放到任意位置运行即可。

**运行之前**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBASVTliKnliIPlh7rpnpg_size_14_color_FFFFFF_t_70_g_se_x_16][]

**运行之后**

红框中是新生成的文件

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBASVTliKnliIPlh7rpnpg_size_14_color_FFFFFF_t_70_g_se_x_16 1][]

# 用法2：使用默认格式 #

## 步骤1：搭建 ##

**创建表结构**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBASVTliKnliIPlh7rpnpg_size_20_color_FFFFFF_t_70_g_se_x_16][]

**步骤2：引入依赖**

compile "com.baomidou:mybatis-plus-generator:3.4.0"
    compile "org.slf4j:slf4j-api:1.7.30"
    compile "org.slf4j:slf4j-simple:1.7.30"
    compile "mysql:mysql-connector-java:8.0.21"

## 步骤2：提供主类 ##

package com.example.generate;
    
    import com.baomidou.mybatisplus.generator.AutoGenerator;
    import com.baomidou.mybatisplus.generator.InjectionConfig;
    import com.baomidou.mybatisplus.generator.config.*;
    import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
    import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
    
    public class Generate {
        private static final String url = "jdbc:mysql://127.0.0.1:3306/blog" +
                "?useUnicode=true&characterEncoding=utf8" +
                "&allowPublicKeyRetrieval=True&useSSL=false" +
                "&serverTimezone=Asia/Shanghai";
        private static final String userName = "root";
        private static final String password = "222333";
        private static final String tableName = "t_blog";
        private static final String tablePrefix = "t_";
    
        // 演示例子
        public static void main(String[] args) {
            // 代码生成器
            AutoGenerator autoGenerator = new AutoGenerator();
    
            // 全局配置
            GlobalConfig globalConfig = new GlobalConfig();
            String projectPath = System.getProperty("user.dir");
            globalConfig.setOutputDir(projectPath + "/src/main/java");
            globalConfig.setAuthor("xxx");
            globalConfig.setFileOverride(false);  //默认就是false
            globalConfig.setOpen(false);
            // gc.setBaseResultMap(true); // mapper.xml 生成 ResultMap
            // gc.setBaseColumnList(true); // mapper.xml 生成 ColumnList
    
            // 自定义文件命名，注意 %s 会自动填充表实体属性！
            globalConfig.setMapperName("%sMapper");
            // gc.setXmlName("%sDao");
            globalConfig.setServiceName("%sService");
            globalConfig.setServiceImplName("%sServiceImpl");
            globalConfig.setControllerName("%sController");
            // gc.setSwagger2(true); 实体属性 Swagger2 注解
            autoGenerator.setGlobalConfig(globalConfig);
    
            // 数据源配置
            DataSourceConfig dataSourceConfig = new DataSourceConfig();
    
            dataSourceConfig.setUrl(url);
            // dsc.setSchemaName("public");
            dataSourceConfig.setDriverName("com.mysql.cj.jdbc.Driver");
            dataSourceConfig.setUsername(userName);
            dataSourceConfig.setPassword(password);
            autoGenerator.setDataSource(dataSourceConfig);
    
            // 包配置
            PackageConfig packageConfig = new PackageConfig();
            // pc.setParent("com.example.generate.out");
            // pc.setModuleName("xxx");
            packageConfig.setParent("com.example.generate." + tableName.substring(tablePrefix.length()));
            autoGenerator.setPackageInfo(packageConfig);
    
            // 自定义配置
            // InjectionConfig cfg = new InjectionConfig() {
            //     @Override
            //     public void initMap() {
            //         // to do nothing
            //     }
            // };
    
            // // 配置自定义输出模板
            // TemplateConfig templateConfig = new TemplateConfig();
            // //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.setController("templates_mp/MyController.java");
            // templateConfig.setService("templates_mp/MyService.java");
            // templateConfig.setServiceImpl("templates_mp/MyServiceImpl.java");
            // templateConfig.setMapper("templates_mp/MyMapper.java");
            // templateConfig.setEntity("templates_mp/MyEntity.java");
            // templateConfig.setXml(null);
            // autoGenerator.setTemplate(templateConfig);
    
            // 策略配置
            StrategyConfig strategyConfig = new StrategyConfig();
            strategyConfig.setNaming(NamingStrategy.underline_to_camel);
            strategyConfig.setColumnNaming(NamingStrategy.underline_to_camel);
            //strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
            strategyConfig.setEntityLombokModel(true);
            strategyConfig.setRestControllerStyle(true);
    
            // 公共父类
            // strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
            // 写于父类中的公共字段
            // strategy.setSuperEntityColumns("id");
    
            // 表名
            strategyConfig.setInclude(tableName);
            strategyConfig.setTablePrefix(tablePrefix);
            autoGenerator.setStrategy(strategyConfig);
            strategyConfig.setControllerMappingHyphenStyle(true);
            autoGenerator.setTemplateEngine(new FreemarkerTemplateEngine());
            autoGenerator.execute();
        }
    }

## 步骤3：运行主类 ##

此“步骤2”代码放到任意位置运行即可。

# 其他 #

## 带mapper(xml)的主类 ##

import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
 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.builder.ConfigBuilder;
 import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert;
 import com.baomidou.mybatisplus.generator.config.po.TableInfo;
 import com.baomidou.mybatisplus.generator.config.rules.DbColumnType;
 import com.baomidou.mybatisplus.generator.config.rules.FileType;
 import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
 import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
 
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
 
 // 演示例子，执行 main 方法控制台输入模块表名回车自动生成对应项目目录中
 public class CodeGenerator {
 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("xxx"); 
 gc.setOpen(false);
 /* 自定义文件命名，注意 %s 会自动填充表实体属性！ */
 gc.setMapperName("%sMapper");
 // gc.setXmlName("%sDao");
 gc.setServiceName("%sService");
 gc.setServiceImplName("%sServiceImpl");
 gc.setControllerName("%sController");
 // gc.setSwagger2(true); 实体属性 Swagger2 注解
 mpg.setGlobalConfig(gc);
 
 // 数据源配置
 DataSourceConfig dsc = new DataSourceConfig();
 
 dsc.setUrl("xxx");
 // dsc.setSchemaName("public");
 dsc.setDriverName("com.mysql.cj.jdbc.Driver");
 dsc.setUsername("xxx"); 
 dsc.setPassword("xxx"); 
 mpg.setDataSource(dsc);
 
 // 包配置
 PackageConfig pc = new PackageConfig();
 // pc.setModuleName(scanner("模块名"));
 pc.setParent("xxx"); 
 mpg.setPackageInfo(pc);
 
 // 自定义配置
 InjectionConfig cfg = new InjectionConfig() {
 @Override
 public void initMap() {
 // to do nothing
 }
 };
 
 
 // 输出resources/mapper
 // 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/" + pc.getModuleName()
 + "/" + 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，自定义目录用");
 if (fileType == FileType.MAPPER) {
 // 已经生成 mapper 文件判断存在，不想重新生成返回 false
 return !new File(filePath).exists();
 }
 // 允许生成模板文件
 return true;
 }
 });
 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.setNaming(NamingStrategy.underline_to_camel);
 strategy.setColumnNaming(NamingStrategy.underline_to_camel);
 //strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
 strategy.setEntityLombokModel(true);
 strategy.setRestControllerStyle(true);
 // 公共父类
 //strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
 // 写于父类中的公共字段
 strategy.setSuperEntityColumns("id");
 strategy.setInclude("xxx");
 strategy.setControllerMappingHyphenStyle(true);
 strategy.setTablePrefix("t_"); 
 mpg.setStrategy(strategy);
 mpg.setTemplateEngine(new FreemarkerTemplateEngine());
 mpg.execute();
 }
 }

# 其他网址 #

[MyBatis-Plus代码生成器 - 掘金][MyBatis-Plus_ -]  
[MyBatisPlus 3.x 代码生成器 - 简书][MyBatisPlus 3.x _ -]  
[Mybatis Plus————代码生成器\_燃烧的小宇宙-CSDN博客][Mybatis Plus_-CSDN]

**自定义模板**

[自定义代码生成器模板 - MyBatis Plus 教程][- MyBatis Plus]  
[MybatisPlus自定义模版中能获取到的信息\_开发者的博客-CSDN博客][MybatisPlus_-CSDN]

[MybatisPlus--_--_IT_-CSDN]: https://knife.blog.csdn.net/article/details/120498347
[_ MyBatis-Plus]: https://baomidou.com/guide/generator.html#%E4%BD%BF%E7%94%A8%E6%95%99%E7%A8%8B
[_ MyBatis-Plus 1]: https://mybatis.plus/config/generator-config.html#%E5%9F%BA%E6%9C%AC%E9%85%8D%E7%BD%AE
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[MyBatis-Plus_ -]: https://juejin.im/post/6844903966279467022
[MyBatisPlus 3.x _ -]: https://www.jianshu.com/p/2ec9337dc2b0
[Mybatis Plus_-CSDN]: https://blog.csdn.net/u014745069/article/details/80720980
[- MyBatis Plus]: https://www.hxstrive.com/subject/mybatis_plus.htm?id=284
[MybatisPlus_-CSDN]: https://blog.csdn.net/yyzc2/article/details/95166554