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This article introduces the relevant knowledge of "how mybatis automatically generates entity classes according to the database". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Catalogue

1. Add dependencies

2. Write a code generator

3. Run the main program and enter the table name

1 、 Add dependency com.baomidou mybatis-plus-boot-starter 3.3.2 com.baomidou mybatis-plus-generator 3.3.2 Org.freemarker freemarker 2.3.30 2 、 Write code generator public class CodeGenerator {/ *

* read console contents *

* / public static String scanner (String tip) {Scanner scanner = new Scanner (System.in); System.out.println ("Please enter" + tip + ":"); if (scanner.hasNext ()) {String ipt = scanner.next (); if (StringUtils.isNotBlank (ipt)) {return ipt }} throw new MybatisPlusException ("Please enter correct" + tip + "!") ;} public static void main (String [] args) {/ / Code generator AutoGenerator mpg = new AutoGenerator (); / / Global configuration GlobalConfig gc = new GlobalConfig (); String projectPath = System.getProperty ("user.dir"); gc.setOutputDir (projectPath + "/ check-service/src/main/java"); gc.setAuthor ("raoyujie"); gc.setOpen (false) / / gc.setSwagger2 (true); entity attribute Swagger2 annotation mpg.setGlobalConfig (gc); / / data source configuration DataSourceConfig dsc = new DataSourceConfig (); dsc.setUrl ("jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useSSL=false&characterEncoding=utf8"); dsc.setDriverName ("com.mysql.cj.jdbc.Driver"); dsc.setUsername ("root") Dsc.setPassword ("root"); mpg.setDataSource (dsc); / / package configuration PackageConfig pc = new PackageConfig (); pc.setParent ("com.hrbust.health.check.service"); mpg.setPackageInfo (pc) / / Custom configuration InjectionConfig cfg = new InjectionConfig () {@ Override public void initMap () {/ / to do nothing}}; / / if the template engine is freemarker String templatePath = "/ templates/mapper.xml.ftl"; / / Custom output configuration List focList = new ArrayList () / / Custom configuration will be given priority to output focList.add (new FileOutConfig (templatePath) {@ Override public String outputFile (TableInfo tableInfo) {/ / Custom output file name. If you set the prefix and suffix for Entity, note here that the name of xml will change accordingly! Return projectPath + "/ check-service/src/main/resources/mapper/" + pc.getModuleName () + "/" + tableInfo.getEntityName () + "Mapper" + StringPool.DOT_XML;}}); cfg.setFileOutConfigList (focList); mpg.setCfg (cfg); / / configuration template TemplateConfig templateConfig = new TemplateConfig (); templateConfig.setXml (null) Mpg.setTemplate (templateConfig); / / Policy configuration StrategyConfig strategy = new StrategyConfig (); strategy.setNaming (NamingStrategy.underline_to_camel); strategy.setColumnNaming (NamingStrategy.underline_to_camel); strategy.setEntityLombokModel (true); strategy.setRestControllerStyle (true); strategy.setInclude (scanner ("Table name, multiple English comma Separation"). Split (",")) Strategy.setControllerMappingHyphenStyle (true); strategy.setTablePrefix (pc.getModuleName () + "_"); mpg.setStrategy (strategy); mpg.setTemplateEngine (new FreemarkerTemplateEngine ()); mpg.execute ();} 3. Run the main program and enter the table name

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