jsf - javax.validation.ConstraintViolationException -

i using jsf+jpa iam not fix error:

javax.validation.constraintviolationexception: bean validation constraint(s) violated while executing automatic bean validation on callback event:'prepersist'. please refer embedded constraintviolations details.

@managedbean(name = "clientcon") public class clientcontroller {      @postconstruct     public void init() {         system.out.println("salam");         clients = new clients();     }      private entitymanagerfactory emf = null;      public clientcontroller() {         emf = persistence.createentitymanagerfactory("clinicprojectpu");     }      private list<clients> clientlist;     private clients clients;      public entitymanager getentitymanager() {         return emf.createentitymanager();     }      public clients getclients() {         return clients;     }      public void setclients(clients clients) {         this.clients = clients;     }      public list<clients> getclientlist() {         this.clientlist = getentitymanager().createnamedquery("clients.findall").getresultlist();         return clientlist;     }      public void createclient() {         entitymanager em = null;         try {             em = getentitymanager();             em.gettransaction().begin();             em.persist(clients); // interesting method             em.flush();             em.gettransaction().commit();             system.out.println("created");         } catch (exception ex) {             ex.printstacktrace();         } {             if (em != null) {                 em.close();             }         }     } } 

---

<h:form>     <fieldset>         <h:panelgrid  columns="2">             <h:outputtext value="ad" style="color: #0099cc"/>             <h:inputtext class="form-client" value="#{clientcon.clients.name}" />             <h:outputtext  value="soyad" style="color: #0099cc" />             <h:inputtext class="form-client" value="#{clientcon.clients.surname}" />             <h:outputtext value="telefon" style="color: #0099cc" />             <h:inputtext class="form-client" value="#{clientcon.clients.phone}" />         </h:panelgrid>          <div class="btns">             <center><h:commandbutton action="#{clientcon.createclient()}"  value="saxla" style="width: 60%;margin-top: 5%;border-radius: 5px;color: #ffffff;background-color: #0099cc" /></center>         </div>     </fieldset> </h:form> 

---

javax.validation.constraintviolationexception: bean validation constraint(s) violated while executing automatic bean validation on callback event:'prepersist'. please refer embedded constraintviolations details.     @ org.eclipse.persistence.internal.jpa.metadata.listeners.beanvalidationlistener.validateoncallbackevent(beanvalidationlistener.java:90)     @ org.eclipse.persistence.internal.jpa.metadata.listeners.beanvalidationlistener.prepersist(beanvalidationlistener.java:62)     @ org.eclipse.persistence.descriptors.descriptoreventmanager.notifylistener(descriptoreventmanager.java:748)     @ org.eclipse.persistence.descriptors.descriptoreventmanager.notifyejb30listeners(descriptoreventmanager.java:691)     @ org.eclipse.persistence.descriptors.descriptoreventmanager.executeevent(descriptoreventmanager.java:229)     @ org.eclipse.persistence.internal.sessions.unitofworkimpl.registernewobjectclone(unitofworkimpl.java:4310)     @ org.eclipse.persistence.internal.sessions.unitofworkimpl.registernotregisterednewobjectforpersist(unitofworkimpl.java:4287)     @ org.eclipse.persistence.internal.sessions.repeatablewriteunitofwork.registernotregisterednewobjectforpersist(repeatablewriteunitofwork.java:518)     @ org.eclipse.persistence.internal.sessions.unitofworkimpl.registernewobjectforpersist(unitofworkimpl.java:4229)     @ org.eclipse.persistence.internal.jpa.entitymanagerimpl.persist(entitymanagerimpl.java:496)     @ controller.clientcontroller.createclient(clientcontroller.java:69)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:606)     @ javax.el.elutil.invokemethod(elutil.java:326)     @ javax.el.beanelresolver.invoke(beanelresolver.java:536)     @ javax.el.compositeelresolver.invoke(compositeelresolver.java:256)     @ com.sun.el.parser.astvalue.invoke(astvalue.java:269)     @ com.sun.el.methodexpressionimpl.invoke(methodexpressionimpl.java:304)     @ com.sun.faces.facelets.el.tagmethodexpression.invoke(tagmethodexpression.java:105)     @ javax.faces.component.methodbindingmethodexpressionadapter.invoke(methodbindingmethodexpressionadapter.java:87)     @ com.sun.faces.application.actionlistenerimpl.processaction(actionlistenerimpl.java:102)     @ javax.faces.component.uicommand.broadcast(uicommand.java:315)     @ javax.faces.component.uiviewroot.broadcastevents(uiviewroot.java:790)     @ javax.faces.component.uiviewroot.processapplication(uiviewroot.java:1282)     @ com.sun.faces.lifecycle.invokeapplicationphase.execute(invokeapplicationphase.java:81)     @ com.sun.faces.lifecycle.phase.dophase(phase.java:101)     @ com.sun.faces.lifecycle.lifecycleimpl.execute(lifecycleimpl.java:198)     @ javax.faces.webapp.facesservlet.service(facesservlet.java:646)     @ org.apache.catalina.core.standardwrapper.service(standardwrapper.java:1682)     @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:318)     @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:160)     @ org.apache.catalina.core.standardpipeline.doinvoke(standardpipeline.java:734)     @ org.apache.catalina.core.standardpipeline.invoke(standardpipeline.java:673)     @ com.sun.enterprise.web.webpipeline.invoke(webpipeline.java:99)     @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:174)     @ org.apache.catalina.connector.coyoteadapter.doservice(coyoteadapter.java:357)     @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:260)     @ com.sun.enterprise.v3.services.impl.containermapper.service(containermapper.java:188)     @ org.glassfish.grizzly.http.server.httphandler.runservice(httphandler.java:191)     @ org.glassfish.grizzly.http.server.httphandler.dohandle(httphandler.java:168)     @ org.glassfish.grizzly.http.server.httpserverfilter.handleread(httpserverfilter.java:189)     @ org.glassfish.grizzly.filterchain.executorresolver$9.execute(executorresolver.java:119)     @ org.glassfish.grizzly.filterchain.defaultfilterchain.executefilter(defaultfilterchain.java:288)     @ org.glassfish.grizzly.filterchain.defaultfilterchain.executechainpart(defaultfilterchain.java:206)     @ org.glassfish.grizzly.filterchain.defaultfilterchain.execute(defaultfilterchain.java:136)     @ org.glassfish.grizzly.filterchain.defaultfilterchain.process(defaultfilterchain.java:114)     @ org.glassfish.grizzly.processorexecutor.execute(processorexecutor.java:77)     @ org.glassfish.grizzly.nio.transport.tcpniotransport.fireioevent(tcpniotransport.java:838)     @ org.glassfish.grizzly.strategies.abstractiostrategy.fireioevent(abstractiostrategy.java:113)     @ org.glassfish.grizzly.strategies.workerthreadiostrategy.run0(workerthreadiostrategy.java:115)     @ org.glassfish.grizzly.strategies.workerthreadiostrategy.access$100(workerthreadiostrategy.java:55)     @ org.glassfish.grizzly.strategies.workerthreadiostrategy$workerthreadrunnable.run(workerthreadiostrategy.java:135)     @ org.glassfish.grizzly.threadpool.abstractthreadpool$worker.dowork(abstractthreadpool.java:564)     @ org.glassfish.grizzly.threadpool.abstractthreadpool$worker.run(abstractthreadpool.java:544)     @ java.lang.thread.run(thread.java:724) 

to know caused constraint violation, can use following validator , logger.

validatorfactory factory = validation.builddefaultvalidatorfactory(); validator validator = factory.getvalidator();  set<constraintviolation<clients>> constraintviolations = validator.validate(clients);  if (constraintviolations.size() > 0 ) { system.out.println("constraint violations occurred.."); (constraintviolation<clients> contraints : constraintviolations) { system.out.println(contraints.getrootbeanclass().getsimplename()+ "." + contraints.getpropertypath() + " " + contraints.getmessage());   } } 

put logger before persisting entity. between

em.gettransaction().begin(); //here goes validator em.persist(clients); 

compile , run. console show you, before exception stack trace, element(s) caused violation(s).

you can should catch try block containing persistence method constraintviolationexception (to avoid further problems and/or inform user error occurred , reason). however, in built system there shouldn't constraint violation exception during persistence. in jsf, , other mvc framework, validation step must totally or partially done @ client side before submit/persistence. that's practice say.