< dependency> < groupId> </ groupId> < artifactId> </ artifactId> < version> </ version> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> < version> </ version> </ dependency> < dependency> 温馨提示：
从上面的pom.xml配置可以看出，使用的mybatis版本为：3.5.3。不同的版本其实现自动生成代码的方式不同，特别是3.5.1及其以上的版本和之前的版本有很大区别。
这是官网中的说明：
package com. mycompany. common. utils ; import com. au. sa. common. services. CommonAbstractService ;
import com. baomidou. mybatisplus. generator. FastAutoGenerator ;
import com. baomidou. mybatisplus. generator. config. OutputFile ;
import com. baomidou. mybatisplus. generator. engine. FreemarkerTemplateEngine ;
import lombok. extern. slf4j. Slf4j ;
import org. apache. commons. lang. StringUtils ; import java. io. BufferedReader ;
import java. io. File ;
import java. io. FileReader ;
import java. io. FileWriter ;
import java. util. Collections ;
import java. util. regex. Matcher ;
import java. util. regex. Pattern ;
@Slf4j
public class MyBatisAutoGeneratorUtil { public static final String DB_URL = "jdbc:mysql://{ip}:{port}/{dbName}?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&useSSL=true&autoReconnect=true" ; public static final String DB_USER_NAME = "username" ; public static final String DB_PASSWORD = "*****" ; public static final String AUTHOR = "xiaohuihui" ; private static final String [ ] SUPPER_ENTITY_CONTAINS_FIELD = { "delete_flag" , "version_num" , "creation_date" , "created_by" , "last_update_date" , "last_updated_by" } ; private static final String DEFAULT_OUT_PUT_DIR = "D://MyBatisPlusAutoGeneratorDir" ; private static final String RESP_OUT_PUT_DIR = "D://MyBatisPlusAutoGeneratorDir" ; private static final String DEFAULT_PARENT_PACK = "com.au.sa.storeRebate" ; private static final String BASE_SUPER_ENTITY_CLASS_NAME = "com.au.sa.storeRebate.common.entity.BaseDbEntity" ; private static final String [ ] TABLE_NAMES = new String [ ] { "table_name" } ; public static void main ( String [ ] args) { FastAutoGenerator . create ( DB_URL , DB_USER_NAME , DB_PASSWORD ) . globalConfig ( builder -> { builder. author ( AUTHOR ) . enableSwagger ( ) . outputDir ( DEFAULT_OUT_PUT_DIR ) ; } ) . packageConfig ( builder -> { builder. parent ( "com.au.sa" ) . moduleName ( "storeRebate" ) . pathInfo ( Collections . singletonMap ( OutputFile . xml, DEFAULT_OUT_PUT_DIR ) ) ; } ) . strategyConfig ( builder -> { builder. addInclude ( TABLE_NAMES ) . entityBuilder ( ) . enableTableFieldAnnotation ( ) . enableLombok ( ) . enableFileOverride ( ) . superClass ( BASE_SUPER_ENTITY_CLASS_NAME ) . controllerBuilder ( ) . superClass ( CommonAbstractService . class ) . enableHyphenStyle ( ) . enableRestStyle ( ) . enableFileOverride ( ) . formatFileName ( "%sController" ) . serviceBuilder ( ) . enableFileOverride ( ) . formatServiceFileName ( "%sService" ) . formatServiceImplFileName ( "%sServiceImpl" ) . mapperBuilder ( ) . enableFileOverride ( ) . enableBaseResultMap ( ) . enableBaseColumnList ( ) . formatMapperFileName ( "%sDao" ) ; } ) . templateEngine ( new FreemarkerTemplateEngine ( ) ) . execute ( ) ; produceViewObject ( false , TABLE_NAMES ) ; } private static void produceViewObject ( boolean isTablePrefix, String . . . tableNames) { for ( int i = 0 ; i < tableNames. length; i++ ) { String tableName = tableNames[ i] ; tableName = isTablePrefix ? tableName. substring ( tableName. indexOf ( "_" ) + 1 ) : tableName; String outPutDir = RESP_OUT_PUT_DIR + "/" + ( DEFAULT_PARENT_PACK . replace ( "." , "/" ) ) + "/resp/" ; String baseFileName = underline2Camel ( tableName, false ) ; try { File outFile = new File ( outPutDir) ; if ( ! outFile. exists ( ) ) { outFile. mkdirs ( ) ; } File voFile = new File ( outFile, baseFileName + "Resp.java" ) ; if ( ! voFile. exists ( ) ) { voFile. createNewFile ( ) ; } BufferedReader reader = new BufferedReader ( new FileReader ( DEFAULT_OUT_PUT_DIR + "/" + ( DEFAULT_PARENT_PACK . replace ( "." , "/" ) ) + "/entity/" + baseFileName + ".java" ) ) ; FileWriter fw = new FileWriter ( voFile) ; String line = null ; String description = null ; String regex = "([\u4e00-\u9fa5]+)" ; while ( ( line = reader. readLine ( ) ) != null ) { Matcher matcher = Pattern . compile ( regex) . matcher ( line) ; if ( matcher. find ( ) ) { description = matcher. group ( 1 ) ; } int index = line. indexOf ( baseFileName) ; if ( line. contains ( "package" ) ) { line = StringUtils . substringBeforeLast ( line, "." ) + ".resp;" ; } else if ( index > - 1 && ! line. contains ( "@ApiModel" ) ) { if ( line. contains ( "+" ) ) { line = StringUtils . substring ( line, 0 , index + baseFileName. length ( ) ) + "{\" +" ; } else { line = StringUtils . substring ( line, 0 , index + baseFileName. length ( ) ) + "{" ; } line = line. replace ( baseFileName, baseFileName + "Resp" ) ; } else if ( line. contains ( "@TableName" ) ) { description = "" ; continue ; } else if ( line. contains ( "@TableField" ) || line. contains ( "@TableId" ) ) { boolean required = true ; for ( String col : SUPPER_ENTITY_CONTAINS_FIELD ) { if ( line. contains ( col) && ! StringUtils . equals ( "version_num" , col) ) { required = false ; break ; } } description = "" ; continue ; } else if ( line. contains ( "@Accessors" ) || line. contains ( "@Override" ) || line. contains ( "@TableLogic" ) || line. contains ( "@Version" ) ) { continue ; } line += "\r\n" ; fw. write ( line) ; } fw. close ( ) ; reader. close ( ) ; } catch ( Exception e) { log. error ( e. getMessage ( ) , e) ; } } } public static String underline2Camel ( String line, boolean . . . smallCamel) { if ( StringUtils . isBlank ( line) ) { return "" ; } StringBuffer sb = new StringBuffer ( ) ; Pattern pattern = Pattern . compile ( "([A-Za-z\\d]+)(_)?" ) ; Matcher matcher = pattern. matcher ( line) ; while ( matcher. find ( ) ) { String word = matcher. group ( ) ; if ( ( smallCamel. length == 0 || smallCamel[ 0 ] ) && matcher. start ( ) == 0 ) { sb. append ( Character . toLowerCase ( word. charAt ( 0 ) ) ) ; } else { sb. append ( Character . toUpperCase ( word. charAt ( 0 ) ) ) ; } int index = word. lastIndexOf ( '_' ) ; if ( index > 0 ) { sb. append ( word. substring ( 1 , index) . toLowerCase ( ) ) ; } else { sb. append ( word. substring ( 1 ) . toLowerCase ( ) ) ; } } return sb. toString ( ) ; }
}
参考官网：MyBatis-Plus代码生成器配置
属性 说明 示例 url jdbc 路径 jdbc:mysql://127.0.0.1:3306/mybatis-plus username 数据库账号 root password 数据库密码 123456
new DataSourceConfig. Builder ( "jdbc:mysql://127.0.0.1:3306/mybatis-plus" , "root" , "123456" ) . build ( ) ;
方法 说明 示例 dbQuery(IDbQuery) 数据库查询 new MySqlQuery(),只在SQLQuery下生效 schema(String) 数据库 schema(部分数据库适用) mybatis-plus typeConvert(ITypeConvert) 数据库类型转换器 new MySqlTypeConvert(),只在SQLQuery下生效 keyWordsHandler(IKeyWordsHandler) 数据库关键字处理器 new MySqlKeyWordsHandler() typeConvertHandler(ITypeConvertHandler) 类型转换器(默认) 自定义实现ITypeConvertHandler,只在DefaultQuery下生效 databaseQueryClass(AbstractDatabaseQuery) 数据库查询方式 默认DefaultQuery.class(通用元数据), SQLQuery.class(SQL查询)
new DataSourceConfig. Builder ( "jdbc:mysql://127.0.0.1:3306/mybatis-plus" , "root" , "123456" ) . dbQuery ( new MySqlQuery ( ) ) . schema ( "mybatis-plus" ) . typeConvert ( new MySqlTypeConvert ( ) ) . keyWordsHandler ( new MySqlKeyWordsHandler ( ) ) . databaseQueryClass ( SQLQuery . class ) . build ( ) ;
new DataSourceConfig. Builder ( "jdbc:mysql://127.0.0.1:3306/mybatis-plus" , "root" , "123456" ) . schema ( "mybatis-plus" ) . keyWordsHandler ( new MySqlKeyWordsHandler ( ) ) . build ( ) ;
方法 说明 示例 disableOpenDir 禁止打开输出目录 默认值:true outputDir(String) 指定输出目录 /opt/baomidou/ 默认值: windows:D:// linux or mac : /tmp author(String) 作者名 baomidou 默认值:作者 enableKotlin 开启 kotlin 模式 默认值:false enableSwagger 开启 swagger 模式 默认值:false dateType(DateType) 时间策略 DateType.ONLY_DATE 默认值: DateType.TIME_PACK commentDate(String) 注释日期 默认值: yyyy-MM-dd
new GlobalConfig. Builder ( ) . fileOverride ( ) . outputDir ( "/opt/baomidou" ) . author ( "baomidou" ) . enableKotlin ( ) . enableSwagger ( ) . dateType ( DateType . TIME_PACK ) . commentDate ( "yyyy-MM-dd" ) . build ( ) ;
方法 说明 示例 parent(String) 父包名 默认值:com.baomidou moduleName(String) 父包模块名 默认值:无 entity(String) Entity 包名 默认值:entity service(String) Service 包名 默认值:service serviceImpl(String) Service Impl 包名 默认值:service.impl mapper(String) Mapper 包名 默认值:mapper xml(String) Mapper XML 包名 默认值:mapper.xml controller(String) Controller 包名 默认值:controller other(String) 自定义文件包名 输出自定义文件时所用到的包名 pathInfo(Map<OutputFile, String>) 路径配置信息 Collections.singletonMap(OutputFile.mapperXml, “D://”)
new PackageConfig. Builder ( ) . parent ( "com.baomidou.mybatisplus.samples.generator" ) . moduleName ( "sys" ) . entity ( "po" ) . service ( "service" ) . serviceImpl ( "service.impl" ) . mapper ( "mapper" ) . xml ( "mapper.xml" ) . controller ( "controller" ) . other ( "other" ) . pathInfo ( Collections . singletonMap ( OutputFile . mapperXml, "D://" ) ) . build ( ) ;
方法 说明 示例 disable 禁用所有模板 disable(TemplateType…) 禁用模板 TemplateType.ENTITY entity(String) 设置实体模板路径(JAVA) /templates/entity.java entityKt(String) 设置实体模板路径(kotlin) /templates/entity.java service(String) 设置 service 模板路径 /templates/service.java serviceImpl(String) 设置 serviceImpl 模板路径 /templates/serviceImpl.java mapper(String) 设置 mapper 模板路径 /templates/mapper.java mapperXml(String) 设置 mapperXml 模板路径 /templates/mapper.xml controller(String) 设置 controller 模板路径 /templates/controller.java
new TemplateConfig. Builder ( ) . disable ( TemplateType . ENTITY ) . entity ( "/templates/entity.java" ) . service ( "/templates/service.java" ) . serviceImpl ( "/templates/serviceImpl.java" ) . mapper ( "/templates/mapper.java" ) . mapperXml ( "/templates/mapper.xml" ) . controller ( "/templates/controller.java" ) . build ( ) ;
方法 说明 示例 beforeOutputFile(BiConsumer<TableInfo, Map<String, Object>>) 输出文件之前消费者 customMap(Map<String, Object>) 自定义配置 Map 对象 Collections.singletonMap(“test”, “baomidou”) customFile(Map<String, String>) 自定义配置模板文件 Collections.singletonMap(“test.txt”, “/templates/test.vm”) 方法 formatNameFunction 可以格式化文件，参考测试用例 H2CodeGeneratorTest.testCustomFileByList
new InjectionConfig. Builder ( ) . beforeOutputFile ( ( tableInfo, objectMap) -> { System . out. println ( "tableInfo: " + tableInfo. getEntityName ( ) + " objectMap: " + objectMap. size ( ) ) ; } ) . customMap ( Collections . singletonMap ( "test" , "baomidou" ) ) . customFile ( Collections . singletonMap ( "test.txt" , "/templates/test.vm" ) ) . build ( ) ;
方法 说明 示例 enableCapitalMode 开启大写命名 默认值:false enableSkipView 开启跳过视图 默认值:false disableSqlFilter 禁用 sql 过滤 默认值:true，语法不能支持使用 sql 过滤表的话，可以考虑关闭此开关 enableSchema 启用 schema 默认值:false，多 schema 场景的时候打开 likeTable(LikeTable) 模糊表匹配(sql 过滤) likeTable 与 notLikeTable 只能配置一项 notLikeTable(LikeTable) 模糊表排除(sql 过滤) likeTable 与 notLikeTable 只能配置一项 addInclude(String…) 增加表匹配(内存过滤) include 与 exclude 只能配置一项 ，支持正则匹配、例如 ^t_.* 所有 t_ 开头的表名 addExclude(String…) 增加表排除匹配(内存过滤) include 与 exclude 只能配置一项 ，支持正则匹配、例如 .*st$ 所有 st 结尾的表名 addTablePrefix(String…) 增加过滤表前缀 addTableSuffix(String…) 增加过滤表后缀 addFieldPrefix(String…) 增加过滤字段前缀 addFieldSuffix(String…) 增加过滤字段后缀 outputFile 内置模板输出文件处理 参考测试用例 H2CodeGeneratorTest.testOutputFile entityBuilder 实体策略配置 controllerBuilder controller 策略配置 mapperBuilder mapper 策略配置 serviceBuilder service 策略配置
new StrategyConfig. Builder ( ) . enableCapitalMode ( ) . enableSkipView ( ) . disableSqlFilter ( ) . likeTable ( new LikeTable ( "USER" ) ) . addInclude ( "t_simple" ) . addTablePrefix ( "t_" , "c_" ) . addFieldSuffix ( "_flag" ) . build ( ) ;
方法 说明 示例 nameConvert(INameConvert) 名称转换实现 superClass(Class<?>) 设置父类 BaseEntity.class superClass(String) 设置父类 com.baomidou.global.BaseEntity disableSerialVersionUID 禁用生成 serialVersionUID 默认值:true enableFileOverride 覆盖已生成文件 默认值:false enableColumnConstant 开启生成字段常量 默认值:false enableChainModel 开启链式模型 默认值:false enableLombok 开启 lombok 模型 默认值:false enableRemoveIsPrefix 开启 Boolean 类型字段移除 is 前缀 默认值:false enableTableFieldAnnotation 开启生成实体时生成字段注解 默认值:false enableActiveRecord 开启 ActiveRecord 模型 默认值:false versionColumnName(String) 乐观锁字段名(数据库字段) versionColumnName与versionPropertyName二选一即可 versionPropertyName(String) 乐观锁属性名(实体) versionColumnName与versionPropertyName二选一即可 logicDeleteColumnName(String) 逻辑删除字段名(数据库字段) logicDeleteColumnName与logicDeletePropertyName二选一即可 logicDeletePropertyName(String) 逻辑删除属性名(实体) logicDeleteColumnName与logicDeletePropertyName二选一即可 naming 数据库表映射到实体的命名策略 默认下划线转驼峰命名:NamingStrategy.underline_to_camel columnNaming 数据库表字段映射到实体的命名策略 默认为 null，未指定按照 naming 执行 addSuperEntityColumns(String…) 添加父类公共字段 addIgnoreColumns(String…) 添加忽略字段 addTableFills(IFill…) 添加表字段填充 addTableFills(List) 添加表字段填充 idType(IdType) 全局主键类型 convertFileName(ConverterFileName) 转换文件名称 formatFileName(String) 格式化文件名称
new StrategyConfig. Builder ( ) . entityBuilder ( ) . superClass ( BaseEntity . class ) . disableSerialVersionUID ( ) . enableChainModel ( ) . enableLombok ( ) . enableRemoveIsPrefix ( ) . enableTableFieldAnnotation ( ) . enableActiveRecord ( ) . versionColumnName ( "version" ) . logicDeleteColumnName ( "deleted" ) . naming ( NamingStrategy . no_change) . columnNaming ( NamingStrategy . underline_to_camel) . addSuperEntityColumns ( "id" , "created_by" , "created_time" , "updated_by" , "updated_time" ) . addIgnoreColumns ( "age" ) . addTableFills ( new Column ( "create_time" , FieldFill . INSERT ) ) . addTableFills ( new Property ( "updateTime" , FieldFill . INSERT_UPDATE ) ) . idType ( IdType . AUTO ) . formatFileName ( "%sEntity" ) . build ( ) ;
方法 说明 示例 superClass(Class<?>) 设置父类 BaseController.class superClass(String) 设置父类 com.baomidou.global.BaseController enableFileOverride 覆盖已生成文件 默认值:false enableHyphenStyle 开启驼峰转连字符 默认值:false enableRestStyle 开启生成@RestController 控制器 默认值:false convertFileName(ConverterFileName) 转换文件名称 formatFileName(String) 格式化文件名称
new StrategyConfig. Builder ( ) . controllerBuilder ( ) . superClass ( BaseController . class ) . enableHyphenStyle ( ) . enableRestStyle ( ) . formatFileName ( "%sAction" ) . build ( ) ;
方法 说明 示例 superServiceClass(Class<?>) 设置 service 接口父类 BaseService.class superServiceClass(String) 设置 service 接口父类 com.baomidou.global.BaseService superServiceImplClass(Class<?>) 设置 service 实现类父类 BaseServiceImpl.class superServiceImplClass(String) 设置 service 实现类父类 com.baomidou.global.BaseServiceImpl enableFileOverride 覆盖已生成文件 默认值:false convertServiceFileName(ConverterFileName) 转换 service 接口文件名称 convertServiceImplFileName(ConverterFileName) 转换 service 实现类文件名称 formatServiceFileName(String) 格式化 service 接口文件名称 formatServiceImplFileName(String) 格式化 service 实现类文件名称
new StrategyConfig. Builder ( ) . serviceBuilder ( ) . superServiceClass ( BaseService . class ) . superServiceImplClass ( BaseServiceImpl . class ) . formatServiceFileName ( "%sService" ) . formatServiceImplFileName ( "%sServiceImp" ) . build ( ) ;
方法 说明 示例 superClass(Class<?>) 设置父类 BaseMapper.class superClass(String) 设置父类 com.baomidou.global.BaseMapper enableFileOverride 覆盖已生成文件 默认值:false enableMapperAnnotation 开启 @Mapper 注解 默认值:false enableBaseResultMap 启用 BaseResultMap 生成 默认值:false enableBaseColumnList 启用 BaseColumnList 默认值:false cache(Class<? extends Cache>) 设置缓存实现类 MyMapperCache.class convertMapperFileName(ConverterFileName) 转换 mapper 类文件名称 convertXmlFileName(ConverterFileName) 转换 xml 文件名称 formatMapperFileName(String) 格式化 mapper 文件名称 formatXmlFileName(String) 格式化 xml 实现类文件名称
new StrategyConfig. Builder ( ) . mapperBuilder ( ) . superClass ( BaseMapper . class ) . enableMapperAnnotation ( ) . enableBaseResultMap ( ) . enableBaseColumnList ( ) . cache ( MyMapperCache . class ) . formatMapperFileName ( "%sDao" ) . formatXmlFileName ( "%sXml" ) . build ( ) ;
public final class EnhanceFreemarkerTemplateEngine extends FreemarkerTemplateEngine { @Override protected void outputCustomFile ( @NotNull Map < String , String > , @NotNull TableInfo tableInfo, @NotNull Map < String , Object > ) { String entityName = tableInfo. getEntityName ( ) ; String otherPath = this . getPathInfo ( OutputFile . other) ; customFile. forEach ( ( key, value) -> { String fileName = String . format ( otherPath + File . separator + entityName + "%s" , key) ; this . outputFile ( new File ( fileName) , objectMap, value) ; } ) ; }
}
使用方式样例(其他细节参数请查看文档)
entityDTO.java.ftl 可参考源码内entity.java.ftl文件
FastAutoGenerator . create ( url, username, password) . globalConfig ( builder -> { builder. author ( "abc" ) . enableSwagger ( ) . fileOverride ( ) . disableOpenDir ( ) . outputDir ( finalProjectPath + "/src/main/java" ) ; } ) . packageConfig ( builder -> { builder. parent ( "com.baomidou.mybatisplus.samples" ) . moduleName ( "test" ) . entity ( "model.entity" ) . other ( "model.dto" ) . pathInfo ( Collections . singletonMap ( OutputFile . xml, finalProjectPath + "/src/main/resources/mapper" ) ) ; } ) . injectionConfig ( consumer -> { Map < String , String > = new HashMap < > ( ) ; customFile. put ( "DTO.java" , "/templates/entityDTO.java.ftl" ) ; consumer. customFile ( customFile) ; } ) ;
与input()的区别)
和str* 以及fgets和strcspn的用法)
)
![[蓝桥杯练习题]确定字符串是否包含唯一字符/确定字符串是否是另一个的排列](http://pic.xiahunao.cn/[蓝桥杯练习题]确定字符串是否包含唯一字符/确定字符串是否是另一个的排列)
