我有一个primefaces对话框,我可以在其中创建或更新Employee.
它会打开
它会打开
</p:dialog><p:dialog id="employeeEditDialog" header="#{msg.employeeEdit}"
widgetVar="dlgEmployeeEdit" resizable="false">
<p:ajax event="close" listener="#{employeeView.cancel}"
update=":showEmployees:liste" />
<ui:include src="/content/Employee/ShowEmployeeContent.xhtml" />
</p:dialog>
这是Dialog Page
<h:form id="editContent">
<p:growl id="growl" showDetail="true" sticky="false" life="5000" />
<p:focus id="focusEdit" for="emSalutation" />
<h:panelGrid columns="2" id="contentGrid">
<h:panelGrid columns="2" id="allgemein"> <h:outputText value="#{msg.id}" />
<h:outputText value="#{employeeView.newEmployee.id}" />
<h:outputText value="#{msg.salutation}" />
<p:selectOneMenu value="#{employeeView.newEmployee.salutation}"
id="emSalutation">
<f:selectItem itemLabel="" itemValue="" />
<f:selectItems value="#{employeeView.salutations}" var="salutations"
itemLabel="#{salutations.description}" itemValue="#{salutations}" />
</p:selectOneMenu>
<h:outputText value="#{msg.title}" />
<p:inputText value="#{employeeView.newEmployee.title}" id="emTitle" />
<h:outputText value="#{msg.name}" />
<p:inputText value="#{employeeView.newEmployee.name}" id="emName"
validatorMessage="#{msg.valName}" />
<h:outputText value="#{msg.prename}" />
<p:inputText value="#{employeeView.newEmployee.prename}"
id="emPrename" />
<h:outputText value="#{msg.loginname}" />
<p:inputText value="#{employeeView.newEmployee.loginname}"
validatorMessage="#{msg.valLogin}" />
<h:outputText value="#{msg.department}" />
<h:panelGrid columns="2" id="departmentGrid">
<p:selectOneMenu value="#{employeeView.selectedDepartment.id}"
id="emDepartment">
<f:selectItem itemLabel="" itemValue="" />
<f:selectItems value="#{employeeView.departmentList}"
var="department" itemLabel="#{department.description}"
itemValue="#{department.id}" />
</p:selectOneMenu>
<p:commandButton icon="ui-icon-disk" immediate="true"
oncomplete="dlgDepartmentAdd.show()"
update="departmentGrid,:departmentAddDialog">
</p:commandButton>
</h:panelGrid>
<h:outputText value="#{msg.position}" />
<h:panelGrid columns="2" id="positionGrid">
<p:selectOneMenu value="#{employeeView.selectedPosition.id}"
id="emPosition">
<f:selectItem itemLabel="" itemValue="" />
<f:selectItems value="#{employeeView.positionList}" var="position"
itemLabel="#{position.description}" itemValue="#{position.id}" />
</p:selectOneMenu>
<p:commandButton icon="ui-icon-disk" immediate="true" id="buttonPos"
oncomplete="dlgPositionAdd.show()"
update="positionGrid,:positionAddDialog">
</p:commandButton>
</h:panelGrid>
<h:outputText value="#{msg.phone}" />
<p:inputText value="#{employeeView.newEmployee.phone}" id="emPhone" />
<h:outputText value="#{msg.fax}" />
<p:inputText value="#{employeeView.newEmployee.fax}" id="emFax" />
<h:outputText value="#{msg.email}" />
<p:inputText value="#{employeeView.newEmployee.email}" id="emEmail"
validator="myEmailValidator" validatorMessage="#{msg.valEmail}" />
<h:outputText value="#{msg.employeedSince}" />
<p:calendar value="#{employeeView.newEmployee.employeedSince}"
id="emEmployeedSince" pattern="dd.MM.yyy" showOn="button" />
<h:outputText value="#{msg.employeedEnd}" />
<p:calendar value="#{employeeView.newEmployee.employeedEnd}"
id="emEmployeedEnd" pattern="dd.MM.yyy" showOn="button" />
<h:outputText value="#{msg.active}" />
<p:selectBooleanCheckBox value="#{employeeView.newEmployee.active}"
id="emActive" />
</h:panelGrid>
</h:panelGrid>
<h:panelGrid columns="3" class="buttonContent" id="button">
<p:commandButton value="#{msg.save}" id="saveButton" update="growl"
oncomplete="if ((!args.validationFailed)) dlgEmployeeEdit.hide()"
actionListener="#{employeeView.saveOrUpdateEmployee}" />
<p:commandButton value="#{msg.cancel}" immediate="true"
oncomplete="dlgEmployeeEdit.hide()"/>
<p:commandButton value="#{msg.delete}" immediate="true"
oncomplete="dlgEmployeeDelete.show()"
disabled="#{(employeeView.newEmployee.id == null) ? true : false}" />
</h:panelGrid>
<p:defaultCommand target="saveButton" /></h:form></html>
现在这里是Page中使用的两个方法：
/**
* Methode zum Speichern und Updaten eines Mitarbeiters
*/
public void saveOrUpdateEmployee() {
FacesContext context = FacesContext.getCurrentInstance();
try {
logger.debug("save aufgerufen " + this.newEmployee);
if (this.selectedDepartment.getId() == null) {
this.newEmployee.setDepartment(null);
}
else {
this.newEmployee.setDepartment(this.departmentHandler.getDepartmentById(this.selectedDepartment.getId()));
}
if (this.selectedPosition.getId() == null) {
this.newEmployee.setPosition(null);
}
else {
this.newEmployee.setPosition(this.positionHandler.getPositionById(this.selectedPosition.getId()));
}
this.employeeController.saveOrUpdate(this.newEmployee);
logger.info("Mitarbeiter erfolgreich gespeichert");
context.addMessage(null,new FacesMessage("Successful","Mitarbeiter gespeichert "));
}
catch (Exception e) {
logger.error("Fehler beim Speichern des Mitarbeiters",e);
context.addMessage(null,new FacesMessage("Fehler beim Speichern des Mitarbeiters",e.getMessage()));
}
this.loadPersons();
}
/**
* Methode zum Abbrechen bei der Neuanlage/Änderung eines Mitarbeiters
* Felder leeren
*/
public void cancel() {
logger.debug("cancel()");
this.newEmployee = new Employee();
this.selected = new Employee();
this.selectedDepartment = new Department();
this.selectedPosition = new Position();
}
如果现在,验证失败,对话框将不会隐藏.这是好的和期望的.它根据需要通过FacesMassages显示我创建的消息.如果我自己用“取消”-Button关闭对话框,对话框将按预期关闭.在cancel() – 方法中,对象Employee将被设置为Employee的新实例(this.newEmployee = new Employee()),如您所见.但是当我在验证失败后打开对话框时,对象“newEmployee”只包含旧值…为什么我的方法cancel()不起作用？我不明白.
解决方法
该问题与
JSF issue 1060有关,并在本Q& A：
How can I populate a text field using PrimeFaces AJAX after validation errors occur?中详细阐述
到目前为止,这种行为(遗憾的是)根据当前的JSF规范是正确的,这可以解决如下：在调用操作阶段,您需要收集包含在ajax渲染中但不在ajax执行中的UIInput组件,然后在它们上调用resetValue()方法.这可以通过OmniFaces ResetInputAjaxActionListener的帮助以通用和可重复使用的方式完成.
