Using Database transactions in spring boot

One: Add comments to the Springboot startup class:@EnableTransactionManagement

@EnableDiscoveryClient @springbootapplication@enablefeignclients@enabletransactionmanagement  Public class deploymentserviceapplication {    publicstaticvoid  main (string[] args) {        Springapplication.run (deploymentserviceapplication. class , args);}    }

Two: Add the annotation in the corresponding place: @Transactional can

@Service Public classDemoserviceimpl implements Demoservice {@Autowired personrepository personrepository; @Transactional (Rollbackfor= {IllegalArgumentException.class}) @Override PublicPerson savepersonwithrollback (person person) {person P=Personrepository.save (person); if(Person.getname (). Equals ("sang")) {            Throw NewIllegalArgumentException ("sang already exists, data will be rolled back"); }        returnp; } @Transactional (Norollbackfor= {IllegalArgumentException.class}) @Override PublicPerson savepersonwithoutrollback (person person) {person P=Personrepository.save (person); if(Person.getname (). Equals ("sang")) {            Throw NewIllegalArgumentException ("sang already exists, but data is not rolled back"); }        returnp; }}

Using Database transactions in spring boot