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如果启用了ajax，则PrimeFaces commandButton不会调用操作(PrimeFaces commandButton doesn't call action if ajax

编程入门 行业动态 更新时间:2024-10-26 07:35:39
如果启用了ajax，则PrimeFaces commandButton不会调用操作(PrimeFaces commandButton doesn't call action if ajax enabled)

这是我的页面：

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:cpanel="http://java.sun.com/jsf/composite/components/cpanel" xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.prime.com.tr/ui" xmlns:ui="http://java.sun.com/jsf/facelets"> <h:head> <title></title> </h:head> <h:body> <ui:composition template="/WEB-INF/templates/cpanelLayout.xhtml"> <ui:define name="metadata"> <f:metadata> <f:viewParam name="id" value="#{linkDoctorBean.incomingDoctorId}" required="true"/> <f:event type="preRenderView" listener="#{linkDoctorBean.preRenderView}"/> </f:metadata> </ui:define> <ui:define name="cpanelContent"> <cpanel:adddedClinicDoctor doctor="#{linkDoctorBean.incomingDoctor}" clinic="#{linkDoctorBean.clinic}"/> <h:form id="form"> <div> <h:panelGrid columns="2"> <p:selectOneMenu id="doctor" value="#{linkDoctorBean.doctor}" converter="#{doctorConverter}" effect="fade" var="d" height="180" validator="#{linkDoctorBean.validateDoctor}"> <f:selectItem itemLabel="Select a doctor" itemValue="" noSelectionOption="true"/> <f:selectItems value="#{linkDoctorBean.doctors}" var="doctor" itemLabel="#{stringBean.doctorToString(doctor)}" itemValue="#{doctor}"/> <p:column> <p:graphicImage value="#{applicationBean.baseResourceUrl}/doc-photo/small/#{d.urlDisplayName}"/> </p:column> <p:column> #{stringBean.doctorToString(d)} </p:column> </p:selectOneMenu> <p:message id="doctorMessage" for="doctor"/> </h:panelGrid> </div> <div style="margin-top:20px;"> <p:commandButton value="Link" action="#{linkDoctorBean.submit()}" update="doctorMessage" process="@all"/> <h:link value="Cancel" outcome="/pages/cpanel/manage-doctors" style="margin-left:10px;"/> </div> </h:form> </ui:define> </ui:composition> </h:body> </html>

当我将<p:commandButton/> linkDoctorBean.submit() ajax="false"添加到<p:commandButton/> ，它可以正常工作 - linkDoctorBean.submit()方法。

但是，启用ajax后，如果表单在当前视图中从未通过验证，则将调用操作方法，但如果表单未通过验证一次并随后提交，则会清除错误消息，但永远不会调用submit()方法。

编辑：我也尝试用这个替换p:commandButton ：

<h:commandButton value="Link" action="#{linkDoctorBean.submit()}"> <f:ajax execute="@all" render="doctorMessage"/> </h:commandButton>

行为完全一样。 在这两种情况下，当提交有效选项时，验证消息似乎被清除。 所以更新/渲染正在发生，而不是进程/执行。 所有后续尝试都无法执行操作，因此表单实际上已经死亡，直到下次加载页面为止。

编辑：这似乎不是PrimeFaces问题。 这是没有PrimeFaces的表单：

<h:form id="form"> <div> <h:panelGrid columns="2"> <h:selectOneMenu id="doctor" value="#{linkDoctorBean.doctor}" converter="#{doctorConverter}" style="width:200px;" required="true" requiredMessage="Please select a doctor" validator="#{linkDoctorBean.validateDoctor}"> <f:selectItem itemLabel="Select a doctor" itemValue="#{null}" noSelectionOption="true"/> <f:selectItems value="#{linkDoctorBean.doctors}" var="doctor" itemLabel="#{stringBean.doctorToString(doctor)}" itemValue="#{doctor}"/> </h:selectOneMenu> <h:message id="doctorMessage" for="doctor"/> </h:panelGrid> </div> <div style="margin-top:20px;"> <h:commandButton value="Link" action="#{linkDoctorBean.submit()}"> <f:ajax execute="@form" render="doctorMessage"/> </h:commandButton> <h:link value="Cancel" outcome="/pages/cpanel/manage-doctors" style="margin-left:10px;"/> </div> </h:form>

现在有一些细微的差别，例如required和占位符选择项的值为null 。 也许最好关注这个最新片段可能出现的问题，暂时忘掉PrimeFaces。

如果它有帮助，这是DoctorConverter类：

@Named("doctorConverter") @RequestScoped public class DoctorConverter implements Converter, Serializable { @Override public Object getAsObject(FacesContext context, UIComponent component, String value) { UIInput in = (UIInput) component; String s = in.getSubmittedValue() != null ? in.getSubmittedValue().toString() : ""; try { long doctorId = Long.parseLong(s); Doctor doctor = doctorDao.findByDoctorId(doctorId); if (doctor == null) { throw new Exception("Doctor not found."); } return doctor; } catch (Exception e) { throw new ConverterException(new FacesMessage(FacesMessage.SEVERITY_ERROR, "Please enter a valid doctor", null), e); } } @Override public String getAsString(FacesContext context, UIComponent component, Object value) { if (value == null || value.toString().length() == 0) { return ""; } Doctor doctor = (Doctor) value; return doctor.getDoctorId().toString(); } @EJB private DoctorDao doctorDao; }

编辑： ...这里有一些来自Doctor实体类的方法：

@Override public int hashCode() { int hash = 0; hash += (doctorId != null ? doctorId.hashCode() : 0); return hash; } @Override public boolean equals(Object object) { if (!(object instanceof Doctor)) { return false; } Doctor other = (Doctor) object; if ((this.doctorId == null && other.doctorId != null) || (this.doctorId != null && !this.doctorId.equals(other.doctorId))) { return false; } return true; }

编辑：正如评论中所讨论的， DoctorConverter.getAsObject被调用三次。 以下是按顺序进行三次调用的堆栈跟踪：

1

at java.lang.Thread.dumpStack(Thread.java:1342) at com.localgp.jsf.converter.DoctorConverter.getAsObject(DoctorConverter.java:34) at com.localgp.jsf.converter.org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.getAsObject(org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.java) at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:171) at com.sun.faces.renderkit.html_basic.MenuRenderer.convertSelectOneValue(MenuRenderer.java:202) at com.sun.faces.renderkit.html_basic.MenuRenderer.getConvertedValue(MenuRenderer.java:319) at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1030) at javax.faces.component.UIInput.validate(UIInput.java:960) at javax.faces.component.UIInput.executeValidate(UIInput.java:1233) at javax.faces.component.UIInput.processValidators(UIInput.java:698) at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) at javax.faces.component.UIForm.processValidators(UIForm.java:253) at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:508) at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1589) at javax.faces.component.UIForm.visitTree(UIForm.java:344) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376) at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183) at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1170) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at com.localgp.NoCacheFilter.doFilter(NoCacheFilter.java:36) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:785) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:649) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:483) at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:454) at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:444) at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:308) at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:87) at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:171) at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:143) at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:94) at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193) at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175) at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145) at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:204) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722)

2

at java.lang.Thread.dumpStack(Thread.java:1342) at com.localgp.jsf.converter.DoctorConverter.getAsObject(DoctorConverter.java:34) at com.localgp.jsf.converter.org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.getAsObject(org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.java) at javax.faces.component.SelectUtils.doConversion(SelectUtils.java:191) at javax.faces.component.SelectUtils.matchValue(SelectUtils.java:99) at javax.faces.component.UISelectOne.validateValue(UISelectOne.java:153) at javax.faces.component.UIInput.validate(UIInput.java:967) at javax.faces.component.UIInput.executeValidate(UIInput.java:1233) at javax.faces.component.UIInput.processValidators(UIInput.java:698) at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) at javax.faces.component.UIForm.processValidators(UIForm.java:253) at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:508) at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1589) at javax.faces.component.UIForm.visitTree(UIForm.java:344) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376) at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183) at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1170) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at com.localgp.NoCacheFilter.doFilter(NoCacheFilter.java:36) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:785) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:649) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:483) at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:454) at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:444) at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:308) at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:87) at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:171) at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:143) at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:94) at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193) at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175) at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145) at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:204) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722)

3

at java.lang.Thread.dumpStack(Thread.java:1342) at com.localgp.jsf.converter.DoctorConverter.getAsObject(DoctorConverter.java:34) at com.localgp.jsf.converter.org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.getAsObject(org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.java) at javax.faces.component.SelectUtils.doConversion(SelectUtils.java:191) at javax.faces.component.SelectUtils.valueIsNoSelectionOption(SelectUtils.java:150) at javax.faces.component.UISelectOne.validateValue(UISelectOne.java:159) at javax.faces.component.UIInput.validate(UIInput.java:967) at javax.faces.component.UIInput.executeValidate(UIInput.java:1233) at javax.faces.component.UIInput.processValidators(UIInput.java:698) at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) at javax.faces.component.UIForm.processValidators(UIForm.java:253) at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:508) at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1589) at javax.faces.component.UIForm.visitTree(UIForm.java:344) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376) at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183) at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1170) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at com.localgp.NoCacheFilter.doFilter(NoCacheFilter.java:36) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:785) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:649) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:483) at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:454) at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:444) at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:308) at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:87) at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:171) at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:143) at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:94) at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193) at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175) at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145) at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:204) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722)

这是JSF页面中的当前表单：

<h:form id="form"> <!-- Validating here instead of at the selectOneMenu level due to its invalidity not being cleared. --> <div style="clear:both;"> <h:panelGrid columns="2"> <h:selectOneMenu id="doctor" value="#{linkDoctorBean.doctor}" converter="#{doctorConverter}" converterMessage="Please select a doctor" style="width:200px;" required="true"> <f:selectItem itemLabel="Select a doctor" itemValue="" noSelectionOption="true"/> <f:selectItems value="#{linkDoctorBean.doctors}" var="doctor" itemLabel="#{stringBean.doctorToString(doctor)}" itemValue="#{doctor}"/> </h:selectOneMenu> <p:message id="doctorMessage" for="doctor"/> </h:panelGrid> </div> <div style="margin-top:20px;"> <h:commandButton value="Link" action="#{linkDoctorBean.submit()}"> <f:ajax execute="@form" render="doctorMessage"/> </h:commandButton> <h:link value="Cancel" outcome="/pages/cpanel/manage-doctors" style="margin-left:10px;"/> </div> </h:form>

编辑：已删除<f:ajax/>和DoctorConverter.getAsObject仍被调用三次。

Here's my page:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:cpanel="http://java.sun.com/jsf/composite/components/cpanel" xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.prime.com.tr/ui" xmlns:ui="http://java.sun.com/jsf/facelets"> <h:head> <title></title> </h:head> <h:body> <ui:composition template="/WEB-INF/templates/cpanelLayout.xhtml"> <ui:define name="metadata"> <f:metadata> <f:viewParam name="id" value="#{linkDoctorBean.incomingDoctorId}" required="true"/> <f:event type="preRenderView" listener="#{linkDoctorBean.preRenderView}"/> </f:metadata> </ui:define> <ui:define name="cpanelContent"> <cpanel:adddedClinicDoctor doctor="#{linkDoctorBean.incomingDoctor}" clinic="#{linkDoctorBean.clinic}"/> <h:form id="form"> <div> <h:panelGrid columns="2"> <p:selectOneMenu id="doctor" value="#{linkDoctorBean.doctor}" converter="#{doctorConverter}" effect="fade" var="d" height="180" validator="#{linkDoctorBean.validateDoctor}"> <f:selectItem itemLabel="Select a doctor" itemValue="" noSelectionOption="true"/> <f:selectItems value="#{linkDoctorBean.doctors}" var="doctor" itemLabel="#{stringBean.doctorToString(doctor)}" itemValue="#{doctor}"/> <p:column> <p:graphicImage value="#{applicationBean.baseResourceUrl}/doc-photo/small/#{d.urlDisplayName}"/> </p:column> <p:column> #{stringBean.doctorToString(d)} </p:column> </p:selectOneMenu> <p:message id="doctorMessage" for="doctor"/> </h:panelGrid> </div> <div style="margin-top:20px;"> <p:commandButton value="Link" action="#{linkDoctorBean.submit()}" update="doctorMessage" process="@all"/> <h:link value="Cancel" outcome="/pages/cpanel/manage-doctors" style="margin-left:10px;"/> </div> </h:form> </ui:define> </ui:composition> </h:body> </html>

When I add ajax="false" to the <p:commandButton/>, it works just fine - the linkDoctorBean.submit() method is called.

With ajax enabled, however, the action method will be called if the form never fails validation in the current view, but if the form fails validation once and is subsequently submitted, the error message is cleared, but the submit() method is never called.

Edit: I also tried replacing the p:commandButton with this:

<h:commandButton value="Link" action="#{linkDoctorBean.submit()}"> <f:ajax execute="@all" render="doctorMessage"/> </h:commandButton>

The behaviour is exactly the same. In both cases, the validation message appears to be cleared when a valid option is submitted. So the update/render is happening, just not the process/execute. All subsequent attempts fail to execute the action, so the form is effectively dead until the next time the page is loaded.

Edit: This doesn't seem to be a PrimeFaces issue. Here's the form without PrimeFaces:

<h:form id="form"> <div> <h:panelGrid columns="2"> <h:selectOneMenu id="doctor" value="#{linkDoctorBean.doctor}" converter="#{doctorConverter}" style="width:200px;" required="true" requiredMessage="Please select a doctor" validator="#{linkDoctorBean.validateDoctor}"> <f:selectItem itemLabel="Select a doctor" itemValue="#{null}" noSelectionOption="true"/> <f:selectItems value="#{linkDoctorBean.doctors}" var="doctor" itemLabel="#{stringBean.doctorToString(doctor)}" itemValue="#{doctor}"/> </h:selectOneMenu> <h:message id="doctorMessage" for="doctor"/> </h:panelGrid> </div> <div style="margin-top:20px;"> <h:commandButton value="Link" action="#{linkDoctorBean.submit()}"> <f:ajax execute="@form" render="doctorMessage"/> </h:commandButton> <h:link value="Cancel" outcome="/pages/cpanel/manage-doctors" style="margin-left:10px;"/> </div> </h:form>

There are some minor differences now, such as required and the place-holder select item's value being null. Perhaps it would be best to focus on what might be going wrong with this latest snippet and forget PrimeFaces for a moment.

In case it helps, here's the DoctorConverter class:

@Named("doctorConverter") @RequestScoped public class DoctorConverter implements Converter, Serializable { @Override public Object getAsObject(FacesContext context, UIComponent component, String value) { UIInput in = (UIInput) component; String s = in.getSubmittedValue() != null ? in.getSubmittedValue().toString() : ""; try { long doctorId = Long.parseLong(s); Doctor doctor = doctorDao.findByDoctorId(doctorId); if (doctor == null) { throw new Exception("Doctor not found."); } return doctor; } catch (Exception e) { throw new ConverterException(new FacesMessage(FacesMessage.SEVERITY_ERROR, "Please enter a valid doctor", null), e); } } @Override public String getAsString(FacesContext context, UIComponent component, Object value) { if (value == null || value.toString().length() == 0) { return ""; } Doctor doctor = (Doctor) value; return doctor.getDoctorId().toString(); } @EJB private DoctorDao doctorDao; }

Edit: ... and here are a couple of methods from the Doctor entity class:

@Override public int hashCode() { int hash = 0; hash += (doctorId != null ? doctorId.hashCode() : 0); return hash; } @Override public boolean equals(Object object) { if (!(object instanceof Doctor)) { return false; } Doctor other = (Doctor) object; if ((this.doctorId == null && other.doctorId != null) || (this.doctorId != null && !this.doctorId.equals(other.doctorId))) { return false; } return true; }

Edit: As discussed in comments, DoctorConverter.getAsObject is called three times. Here are the stack traces for the three calls in order:

1

at java.lang.Thread.dumpStack(Thread.java:1342) at com.localgp.jsf.converter.DoctorConverter.getAsObject(DoctorConverter.java:34) at com.localgp.jsf.converter.org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.getAsObject(org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.java) at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:171) at com.sun.faces.renderkit.html_basic.MenuRenderer.convertSelectOneValue(MenuRenderer.java:202) at com.sun.faces.renderkit.html_basic.MenuRenderer.getConvertedValue(MenuRenderer.java:319) at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1030) at javax.faces.component.UIInput.validate(UIInput.java:960) at javax.faces.component.UIInput.executeValidate(UIInput.java:1233) at javax.faces.component.UIInput.processValidators(UIInput.java:698) at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) at javax.faces.component.UIForm.processValidators(UIForm.java:253) at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:508) at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1589) at javax.faces.component.UIForm.visitTree(UIForm.java:344) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376) at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183) at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1170) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at com.localgp.NoCacheFilter.doFilter(NoCacheFilter.java:36) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:785) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:649) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:483) at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:454) at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:444) at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:308) at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:87) at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:171) at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:143) at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:94) at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193) at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175) at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145) at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:204) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722)

2

at java.lang.Thread.dumpStack(Thread.java:1342) at com.localgp.jsf.converter.DoctorConverter.getAsObject(DoctorConverter.java:34) at com.localgp.jsf.converter.org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.getAsObject(org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.java) at javax.faces.component.SelectUtils.doConversion(SelectUtils.java:191) at javax.faces.component.SelectUtils.matchValue(SelectUtils.java:99) at javax.faces.component.UISelectOne.validateValue(UISelectOne.java:153) at javax.faces.component.UIInput.validate(UIInput.java:967) at javax.faces.component.UIInput.executeValidate(UIInput.java:1233) at javax.faces.component.UIInput.processValidators(UIInput.java:698) at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) at javax.faces.component.UIForm.processValidators(UIForm.java:253) at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:508) at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1589) at javax.faces.component.UIForm.visitTree(UIForm.java:344) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376) at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183) at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1170) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at com.localgp.NoCacheFilter.doFilter(NoCacheFilter.java:36) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:785) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:649) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:483) at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:454) at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:444) at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:308) at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:87) at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:171) at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:143) at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:94) at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193) at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175) at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145) at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:204) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722)

3

at java.lang.Thread.dumpStack(Thread.java:1342) at com.localgp.jsf.converter.DoctorConverter.getAsObject(DoctorConverter.java:34) at com.localgp.jsf.converter.org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.getAsObject(org$jboss$weld$bean-localgp-server-web-1$0-SNAPSHOT_war-ManagedBean-class_com$localgp$jsf$converter$DoctorConverter_$$_WeldClientProxy.java) at javax.faces.component.SelectUtils.doConversion(SelectUtils.java:191) at javax.faces.component.SelectUtils.valueIsNoSelectionOption(SelectUtils.java:150) at javax.faces.component.UISelectOne.validateValue(UISelectOne.java:159) at javax.faces.component.UIInput.validate(UIInput.java:967) at javax.faces.component.UIInput.executeValidate(UIInput.java:1233) at javax.faces.component.UIInput.processValidators(UIInput.java:698) at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) at javax.faces.component.UIForm.processValidators(UIForm.java:253) at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:508) at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1589) at javax.faces.component.UIForm.visitTree(UIForm.java:344) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600) at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376) at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183) at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1170) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at com.localgp.NoCacheFilter.doFilter(NoCacheFilter.java:36) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:785) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:649) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:483) at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:454) at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:444) at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:308) at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:87) at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:171) at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:143) at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:94) at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193) at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175) at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145) at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:204) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722)

And here's the current form in the JSF page:

<h:form id="form"> <!-- Validating here instead of at the selectOneMenu level due to its invalidity not being cleared. --> <div style="clear:both;"> <h:panelGrid columns="2"> <h:selectOneMenu id="doctor" value="#{linkDoctorBean.doctor}" converter="#{doctorConverter}" converterMessage="Please select a doctor" style="width:200px;" required="true"> <f:selectItem itemLabel="Select a doctor" itemValue="" noSelectionOption="true"/> <f:selectItems value="#{linkDoctorBean.doctors}" var="doctor" itemLabel="#{stringBean.doctorToString(doctor)}" itemValue="#{doctor}"/> </h:selectOneMenu> <p:message id="doctorMessage" for="doctor"/> </h:panelGrid> </div> <div style="margin-top:20px;"> <h:commandButton value="Link" action="#{linkDoctorBean.submit()}"> <f:ajax execute="@form" render="doctorMessage"/> </h:commandButton> <h:link value="Cancel" outcome="/pages/cpanel/manage-doctors" style="margin-left:10px;"/> </div> </h:form>

Edit: Removed <f:ajax/> and DoctorConverter.getAsObject is still being called three times.

最满意答案

你的转换器坏了。 它必须根据value参数转换值，而不是UIInput#getSubmittedValue() 。 noSelectionOption值也即通过转换器（作为第3个跟踪提示）。 如果您的实际提交值等于noSelectionOption值，则该值被视为无效，因此验证错误。

我还建议其他小改写; 空字符串应为空。

@Override public String getAsString(FacesContext context, UIComponent component, Object modelValue) { if (modelValue == null) { return ""; } if (modelValue instanceof Doctor) { Long id = ((Doctor) modelValue).getId(); return (id != null) ? String.valueOf(id) : null; } else { throw new ConverterException(new FacesMessage(modelValue + " is not a valid Doctor")); } } @Override public Object getAsObject(FacesContext context, UIComponent component, String submittedValue) { if (submittedValue == null || submittedValue.isEmpty()) { return null; } try { Long id = Long.valueOf(submittedValue); return doctorService.find(id); } catch (NumberFormatException e) { throw new ConverterException(new FacesMessage(submittedValue + " is not a valid Doctor ID")); } }

请注意，我在我的web.xml中也有这个： 

<context-param>
    <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
    <param-value>true</param-value>
</context-param>
 

 

 更新 ：根据评论，感谢<h:messages/> ，结果证明是其他需要的东西。 最后结果是a <f:viewParam required="true">在ajax回发上被重新调用。 为了防止这种情况，改为使用 
 

<f:viewParam ... required="#{not facesContext.postback}" />

Your converter is broken. It has to convert the value based on the value argument, not the UIInput#getSubmittedValue(). The noSelectionOption value is namely also passed through the converter (as the 3rd trace hints). If your real submitted value equals the noSelectionOption value, then the value is considered as not valid, hence the validation error.
 

I also suggest other minor rewrites; empty strings should be nulls.
 
@Override
public String getAsString(FacesContext context, UIComponent component, Object modelValue) {
    if (modelValue == null) {
        return "";
    }

    if (modelValue instanceof Doctor) {
        Long id = ((Doctor) modelValue).getId();
        return (id != null) ? String.valueOf(id) : null;
    } else {
        throw new ConverterException(new FacesMessage(modelValue + " is not a valid Doctor"));
    }
}

@Override
public Object getAsObject(FacesContext context, UIComponent component, String submittedValue) {
    if (submittedValue == null || submittedValue.isEmpty()) {
        return null;
    }

    try {
        Long id = Long.valueOf(submittedValue);
        return doctorService.find(id);
    } catch (NumberFormatException e) {
        throw new ConverterException(new FacesMessage(submittedValue + " is not a valid Doctor ID"));
    }
}
 

Note that I have this in my web.xml as well:
 

<context-param>
    <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
    <param-value>true</param-value>
</context-param>
 

 

Update: as per the comments, thanks to <h:messages/> there turns out to be something else which is been required. Finally it turns out to be a <f:viewParam required="true"> which is been reinvoked on ajax postback. To prevent this, instead use 
 

<f:viewParam ... required="#{not facesContext.postback}" />

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java,com,sun,doctor,电脑培训,计算机培训,IT培训"/> <meta name="descripti

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