我正在尝试使用Primefaces对话框在数据库中插入实体对象，它在我第一次使用对话框时工作，当我第二次尝试使用它时，在对话框中保持相同的bean，这里是我的代码：
这是在文件 index.xhtml 我有一个名为patients的表，这是页脚：
<f:facet name="footer">
<p:outputPanel>
<p:growl id="growl" showDetail="true" />
<p:commandButton value="Add Patient" icon="ui-icon-extlink"
actionListener="#{patientsViewBean.addNewPatientDialog}">
<p:ajax event="dialogReturn"
listener="#{patientsViewBean.onDialogReturn}" update="patients" />
</p:commandButton>
</p:outputPanel>
</f:facet>
对话框页面是 addNewDialog.xhtml 它包含：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head>
<title>Add New Patient</title>
<style type="text/css">
.ui-widget {
font-size: 80%;
}
</style>
</h:head>
<h:body>
<p:panel style="margin: 2px;">
<h:form id="form" >
<p:growl id="msgs" showDetail="true" />
<p:panel title="Patient Personal Information" header="Patient Personal Information">
<p:panelGrid style="margin: 2px 2px 2px 2px" columns="2"
columnClasses="label, value">
<p:outputLabel value="First Name: *"></p:outputLabel>
<p:inputText value="#{newPatientView.patient.firstName}"
required="true" label="First Name"></p:inputText>
<p:outputLabel value="Father Name: *"></p:outputLabel>
<p:inputText value="#{newPatientView.patient.fatherName}"
required="true" label="Father Name"></p:inputText>
<p:outputLabel value="Family Name: *"></p:outputLabel>
<p:inputText value="#{newPatientView.patient.familyName}"
required="true" label="Family Name"></p:inputText>
<p:outputLabel value="Mother Name: *"></p:outputLabel>
<p:inputText value="#{newPatientView.patient.motherName}"
required="true" label="Mother Name"></p:inputText>
<p:outputLabel value="Birth Date"></p:outputLabel>
<p:calendar id="bdate" value="#{newPatientView.patient.birthDate}"
locale="ar" navigator="true" yearRange="c-120:c" effect="fade"
mask="true" pattern="yyyy-MM-dd" required="true" />
<p:outputLabel value="Birth Place: "></p:outputLabel>
<p:inputText value="#{newPatientView.patient.birthPlace}"
required="false" label="Birth Place"></p:inputText>
</p:panelGrid>
</p:panel>
<p:panel title="Contact Information" header="Contact Information">
<p:remoteCommand name="updateButtonsStatus"
process="@this contactInfoTable:buttons"
update="contactInfoTable:buttons"></p:remoteCommand>
<p:dataTable id="contactInfoTable" var="cntctInfo"
selectionMode="single" rowKey="#{cntctInfo}"
selection="#{newPatientView.cntctInfo}"
value="#{newPatientView.patient.contactInfoList}" editable="true"
widgetVar="cellCntctInfo">
<p:ajax event="rowEditInit"
listener="#{newPatientView.onRowEditInit}"
oncomplete="updateButtonsStatus()" />
<p:ajax event="rowEdit" immediate="true"
listener="#{newPatientView.onRowEdit}" update=":form:msgs"
oncomplete="updateButtonsStatus()" />
<p:ajax event="rowEditCancel"
listener="#{newPatientView.onRowCancel}"
oncomplete="updateButtonsStatus()" />
<p:column headerText="Email">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{cntctInfo.email}" />
</f:facet>
<f:facet name="input">
<p:inputText id="emailInput" value="#{cntctInfo.email}"
style="width:95%" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Phone">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{cntctInfo.phone}" />
</f:facet>
<f:facet name="input">
<p:inputText id="phoneInput" value="#{cntctInfo.phone}"
style="width:95%" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Type">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{cntctInfo.type}" />
</f:facet>
<f:facet name="input">
<p:selectOneMenu id="typeInput" value="#{cntctInfo.type}"
style="width:100%; height: 95%">
<f:selectItem itemLabel="Main" itemValue="Main"></f:selectItem>
<f:selectItem itemLabel="Home" itemValue="Home"></f:selectItem>
<f:selectItem itemLabel="Work" itemValue="Work"></f:selectItem>
<f:selectItem itemLabel="Perm" itemValue="Perm"></f:selectItem>
<f:selectItem itemLabel="Curr" itemValue="Curr"></f:selectItem>
</p:selectOneMenu>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Edit" style="width:32px">
<p:rowEditor />
</p:column>
<f:facet name="footer">
<p:outputPanel id="buttons" autoUpdate="true">
<p:commandButton value="Add New" process="@this contactInfoTable"
actionListener="#{newPatientView.onAddNewContactInfo}"
update="contactInfoTable :form:msgs"
disabled="#{newPatientView.addContactInfoDisabled}" />
<p:commandButton value="Delete Seleced"
process="@this contactInfoTable"
actionListener="#{newPatientView.onDeleteSelectedContactInfo}"
update="contactInfoTable :form:msgs"
disabled="#{newPatientView.deleteSelectedContactInfoDisabled}" />
</p:outputPanel>
</f:facet>
</p:dataTable>
</p:panel>
<p:panel>
<p:commandButton value="Save" actionListener="#{newPatientView.onDialogApprove}"></p:commandButton>
<p:commandButton value="Discard" actionListener="#{newPatientView.onDialogCancel}"></p:commandButton>
</p:panel>
</h:form>
</p:panel>
</h:body>
</html>
我有两个烘焙豆 newPatientView ，代码如下：
package me.bttb.crs.beans.patient;
import java.util.ArrayList;
import java.util.List;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import javax.faces.view.ViewScoped;
import javax.inject.Inject;
import javax.inject.Named;
import org.primefaces.context.RequestContext;
import org.primefaces.event.RowEditEvent;
import me.bttb.crs.model.ContactInfo;
import me.bttb.crs.model.Ptnt;
@Named
@ManagedBean
@ViewScoped
public class NewPatientView {
@Inject
private PatientDAO patientDAO;
private Ptnt patient;
private List<ContactInfo> cntctInfoList;
private ContactInfo cntctInfo;
private boolean addContactInfoDisabled = false;
private boolean deleteSelectedContactInfoDisabled = true;
boolean confirm = false;
public NewPatientView() {
init();
}
public void init() {
this.setPatient(new Ptnt());
this.setCntctInfoList(new ArrayList<>());
this.getPatient().setContactInfoList(this.getCntctInfoList());
}
/////////////// EVENTS//////////////////
public void onAddNewContactInfo(ActionEvent event) {
if (patient.getContactInfoList() == null)
patient.setContactInfoList(new ArrayList<>());
boolean hasNewRow = patient.getContactInfoList().stream()
.filter(ci -> ci.getEmail() == null && ci.getPhone() == null).count() >= 1;
if (hasNewRow) {
FacesMessage msg = new FacesMessage("Can't add new row", "There is an empty row already!!");
FacesContext.getCurrentInstance().addMessage(null, msg);
} else {
ContactInfo cntctInfo = new ContactInfo();
cntctInfo.setType("Main");
cntctInfo.setPrsn(patient);
patient.getContactInfoList().add(cntctInfo);
}
}
public void onDeleteSelectedContactInfo(ActionEvent event) {
if (cntctInfo != null) {
cntctInfoList.remove(cntctInfo);
cntctInfo = null;
}
this.setDeleteSelectedContactInfoDisabled(true);
this.setAddContactInfoDisabled(false);
}
public void onRowEdit(RowEditEvent event) {
this.setDeleteSelectedContactInfoDisabled(true);
this.setAddContactInfoDisabled(false);
ContactInfo editedContactInfo = (ContactInfo) event.getObject();
boolean moreThanOne = patient.getContactInfoList().stream().filter(ci -> ci.equals(editedContactInfo))
.count() > 1;
if (moreThanOne) {
patient.getContactInfoList().remove(editedContactInfo);
FacesMessage msg = new FacesMessage("Row Removed", "The contact information provided is redundent!!");
FacesContext.getCurrentInstance().addMessage(null, msg);
}
}
public void onRowEditInit(RowEditEvent event) {
if (event.getObject() instanceof ContactInfo) {
this.setCntctInfo((ContactInfo) event.getObject());
this.setDeleteSelectedContactInfoDisabled(false);
}
this.setAddContactInfoDisabled(true);
}
public void onRowCancel(RowEditEvent event) {
this.setDeleteSelectedContactInfoDisabled(true);
this.setAddContactInfoDisabled(false);
}
public void onDialogCancel() {
RequestContext.getCurrentInstance().closeDialog(null);
}
public void onDialogApprove() {
RequestContext.getCurrentInstance().closeDialog(patient);
}
public PatientDAO getPatientDAO() {
return patientDAO;
}
public void setPatientDAO(PatientDAO patientDAO) {
this.patientDAO = patientDAO;
}
public Ptnt getPatient() {
return patient;
}
public void setPatient(Ptnt patient) {
this.patient = patient;
}
public ContactInfo getCntctInfo() {
return cntctInfo;
}
public void setCntctInfo(ContactInfo cntctInfo) {
this.cntctInfo = cntctInfo;
}
public boolean isAddContactInfoDisabled() {
return addContactInfoDisabled;
}
public void setAddContactInfoDisabled(boolean addContactInfoDisabled) {
this.addContactInfoDisabled = addContactInfoDisabled;
}
public boolean isDeleteSelectedContactInfoDisabled() {
return deleteSelectedContactInfoDisabled;
}
public void setDeleteSelectedContactInfoDisabled(boolean deleteSelectedContactInfoDisabled) {
this.deleteSelectedContactInfoDisabled = deleteSelectedContactInfoDisabled;
}
public List<ContactInfo> getCntctInfoList() {
return cntctInfoList;
}
public void setCntctInfoList(List<ContactInfo> cntctInfoList) {
this.cntctInfoList = cntctInfoList;
}
}
以下是我在 patienViewBean 中调用对话框的方法：
package me.bttb.crs.beans.patient;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;
import javax.faces.view.ViewScoped;
import javax.inject.Named;
import org.primefaces.context.RequestContext;
import org.primefaces.event.SelectEvent;
import org.springframework.beans.factory.annotation.Autowired;
import me.bttb.crs.model.Ptnt;
@Named
@ManagedBean
@ViewScoped
public class PatientsViewBean {
@Autowired
private PatientDAO patientDAO;
private List<Ptnt> patients;
private List<Ptnt> filterdPatients;
public PatientsViewBean() {
}
public long getPatientsCount() {
return patientDAO.getPatientsCount();
}
public List<Ptnt> refreshAllPatients() {
this.setPatients(patientDAO.getPatients());
return this.getPatients();
}
public void addNewPatientDialog() {
Map<String, Object> options = new HashMap<String, Object>();
options.put("resizable", false);
options.put("draggable", false);
options.put("modal", true);
//options.put("contentHeight", "95%");
//options.put("height", 400);
//options.put("width", 700);
options.put("closable", false);
RequestContext.getCurrentInstance().openDialog("newPatientDialog", options, null);
}
public void onDialogReturn(SelectEvent event) {
if (event.getObject() != null && event.getObject() instanceof Ptnt) {
patientDAO.addpatient((Ptnt) event.getObject());
refreshAllPatients();
FacesMessage msg = new FacesMessage("Patient Added", "Pateint information added in the database.");
FacesContext.getCurrentInstance().addMessage(null, msg);
} else {
FacesMessage msg = new FacesMessage("operation canceld", "Nothing is saved to the database.");
FacesContext.getCurrentInstance().addMessage(null, msg);
}
}
////////////////////////////////////
public PatientDAO getPatientDAO() {
return patientDAO;
}
public void setPatientDAO(PatientDAO patientDAO) {
this.patientDAO = patientDAO;
}
public List<Ptnt> getPatients() {
return patients;
}
public void setPatients(List<Ptnt> patients) {
this.patients = patients;
}
public List<Ptnt> getFilterdPatients() {
return filterdPatients;
}
public void setFilterdPatients(List<Ptnt> filterdPatients) {
this.filterdPatients = filterdPatients;
}
}
我做错了什么，每次对话框出现时都不应该重新创建 newPatientView 吗？
请在此解释视图的生命周期。