1、先建立一个项目。
2、pom文件的引用。
<properties><mybatis-plus-boot-starter.version>2.1.9</mybatis-plus-boot-starter.version><mysql.version>5.1.47</mysql.version></properties><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>${mybatis-plus-boot-starter.version}</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version><scope>compile</scope></dependency>
3、建立数据库及表。
4、java代码。将代码中的常量进行替换，就可以直接生成代码了。表名要是多个单词组成，建议用下划线分隔。
importcom.baomidou.mybatisplus.enums.IdType;importcom.baomidou.mybatisplus.generator.AutoGenerator;importcom.baomidou.mybatisplus.generator.config.DataSourceConfig;importcom.baomidou.mybatisplus.generator.config.GlobalConfig;importcom.baomidou.mybatisplus.generator.config.PackageConfig;importcom.baomidou.mybatisplus.generator.config.StrategyConfig;importcom.baomidou.mybatisplus.generator.config.rules.DbType;importcom.baomidou.mybatisplus.generator.config.rules.NamingStrategy;publicclassCodeGenerator{privatestaticfinalStringdriverName="com.mysql.jdbc.Driver";privatestaticfinalStringurl="jdbc:mysql://localhost:3306/zxj_sql";privatestaticfinalStringuser="root";privatestaticfinalStringpassword="123456";privatestaticfinalString[]tableName={"eco_reptile_good","eco_reptile_shop","eco_good_info"};privatestaticfinalStringpackageName="com.zxj.reptile.module.ecommerce";privatestaticfinalStringauthor="zxj";privatestaticfinalStringentitySuperPackageName="com.zxj.reptile.module.AbstractEntity";privatestaticfinalString[]entityColumns={"id"};publicstaticvoidmain(String[]args){DataSourceConfigdataSourceConfig=newDataSourceConfig();dataSourceConfig.setDbType(DbType.MYSQL).setUrl(url).setUsername(user).setPassword(password).setDriverName(driverName);StrategyConfigstrategyConfig=newStrategyConfig();strategyConfig.setSuperEntityClass(entitySuperPackageName).setSuperEntityColumns(entityColumns).setCapitalMode(true).setEntityLombokModel(false).setDbColumnUnderline(true).setNaming(NamingStrategy.underline_to_camel).setInclude(tableName);//修改替换成你需要的表名，多个表名传数组GlobalConfigglobalConfig=newGlobalConfig();globalConfig.setActiveRecord(false).setEnableCache(false)//是否开启二级缓存.setIdType(IdType.ID_WORKER_STR).setAuthor(author).setOutputDir("c:\\cn").setFileOverride(true).setServiceName("I%sService");//user->IUserService,设置成true:user->IUserServiceAutoGeneratorautoGenerator=newAutoGenerator();autoGenerator.setGlobalConfig(globalConfig).setDataSource(dataSourceConfig).setStrategy(strategyConfig).setPackageInfo(newPackageConfig().setParent(packageName).setController("controller").setEntity("entity")).execute();}}
5、自动生成的代码。
importcom.baomidou.mybatisplus.annotations.TableId;importcom.baomidou.mybatisplus.enums.IdType;importjava.io.Serializable;/***<p>**</p>**@authorzxj*@since2019-09-25*/publicclassDemoimplementsSerializable{privatestaticfinallongserialVersionUID=1L;@TableId(value="id",type=IdType.ID_WORKER_STR)privateStringid;privateStringcontent;publicStringgetId(){returnid;}publicvoidsetId(Stringid){this.id=id;}publicStringgetContent(){returncontent;}publicvoidsetContent(Stringcontent){this.content=content;}@OverridepublicStringtoString(){return"Demo{"+",id="+id+",content="+content+"}";}}
6、目录结构总览。
7、关于mapper包扫描不到的解决方法。
第一种是在位于zxj-reptile-api子模块下的ApiApplication.java中添加@MapperScan注解。
packagecom.zxj.reptile;importorg.mybatis.spring.annotation.MapperScan;importorg.springframework.boot.SpringApplication;importorg.springframework.boot.autoconfigure.SpringBootApplication;importorg.springframework.transaction.annotation.EnableTransactionManagement;importspringfox.documentation.swagger2.annotations.EnableSwagger2;@EnableTransactionManagement@SpringBootApplication@MapperScan("com.zxj.reptile.module.*.mapper")@EnableSwagger2publicclassApiApplication{publicstaticvoidmain(String[]args){SpringApplication.run(ApiApplication.class,args);}}
第二种是在位于zxj-reptile-manage子模块下的DemoMapper.java中添加@Mapper注解
@MapperpublicinterfaceDemoMapperextendsBaseMapper<Demo>{} 二、
1、我们如果对自动生成的主键id不满意的话，也可以通过创建一个父类，来对id进行统一的规划。首先创建一个父类。
packagecom.zxj.reptile.module;importcom.baomidou.mybatisplus.annotations.TableId;importjava.io.Serializable;importjava.util.UUID;publicabstractclassAbstractEntityimplementsSerializable{@TableId(value="id")privateStringid;publicStringgetId(){if(id==null||id.isEmpty()){this.id=UUID.randomUUID().toString().replaceAll("-","");}returnthis.id;}publicvoidsetId(Stringid){this.id=id;}}
2、在代码生成器CodeGenerator中添加几行代码，并在main方法中修改StrategyConfig。
privatestaticfinalStringentitySuperPackageName="com.zxj.reptile.module.AbstractEntity";privatestaticfinalString[]entityColumns={"id"};StrategyConfigstrategyConfig=newStrategyConfig();strategyConfig.setSuperEntityClass(entitySuperPackageName).setSuperEntityColumns(entityColumns).setCapitalMode(true).setEntityLombokModel(false).setDbColumnUnderline(true).setNaming(NamingStrategy.underline_to_camel).setInclude(tableName);//修改替换成你需要的表名，多个表名传数组
3、现在来看看自动生成的代码，除了entity不一样，剩下的都一样。
importcom.zxj.reptile.module.AbstractEntity;/***<p>**</p>**@authorzxj*@since2019-09-25*/publicclassDemoextendsAbstractEntity{privatestaticfinallongserialVersionUID=1L;privateStringcontent;publicStringgetContent(){returncontent;}publicvoidsetContent(Stringcontent){this.content=content;}@OverridepublicStringtoString(){return"Demo{"+",content="+content+"}";}}
有任何问题，欢迎下方留言。
