我使用SessionScoped bean来存储我从使用JPA的ClientService检索的客户机对象。当我的网页加载时，我通过一个GET Id参数来检索正确的客户端对象。一切都很好，但当我尝试编辑客户端对象属性时，它不会因为某种原因而改变。
下面是我的代码:视图:
<?xml version='1.0' encoding='UTF-8' ?>
<!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://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<body>
<ui:composition template="./../../WEB-INF/templates/master.xhtml">
<ui:define name="functions">
<li><h:link outcome="clients/overview"><i class="icon-chevron-right"></i> <h:outputText value="#{trans['sidebar.links.overview']}" /> </h:link></li>
</ui:define>
<ui:define name="page-header">
Edit - Clients
</ui:define>
<ui:define name="content">
<f:metadata>
<f:viewParam name="id" value="#{editClientBean.id}" required="false"/>
<f:event type="preRenderComponent" listener="#{editClientBean.findClient()}"/>
</f:metadata>
<h:form class="form-horizontal">
<div class="control-group">
<label class="control-label" for="inputEmail">Firstname</label>
<div class="controls">
<h:inputText value="#{editClientBean.client.firstname}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Lastname</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.lastname}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Birthdate</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.dateToString()}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">City</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.city}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Address</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.address}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Zip</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.zipcode}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Info</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.info}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Info</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.info}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Email</label>
<div class="controls">
<h:inputText value ="#{editClientBean.client.email}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Password</label>
<div class="controls">
<h:inputSecret value="#{editClientBean.client.password}" />
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Cartrack ID(s)</label>
<div class="controls">
</div>
</div>
<div class="control-group">
<div class="controls">
<h:commandButton value="Change" >
<f:ajax listener="#{editClientBean.edit}" />
</h:commandButton>
</div>
</div>
</h:form>
</ui:define>
</ui:composition>
</body>
</html>
Bean:
package Beans;
import Entities.Cartrack;
import Entities.Client;
import Services.CarTrackService;
import Services.ClientService;
import java.io.Serializable;
import java.util.List;
import javax.enterprise.context.SessionScoped;
import javax.inject.Inject;
import javax.inject.Named;
/**
*
* @author Roel
*/
@Named
@SessionScoped
public class EditClientBean implements Serializable {
@Inject
private ClientService clientService;
@Inject
private CarTrackService cartrackService;
private Client client;
private Long id;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public void findClient(){
this.client = this.clientService.Find(this.id);
}
/**
* @return the client
*/
public Client getClient() {
return client;
}
/**
* @param client the client to set
*/
public void setClient(Client client) {
this.client = client;
}
public List<Cartrack> getCarTracks(){
return this.cartrackService.FindAll();
}
public void edit(){
System.out.println(this.client.getFirstname());
System.out.println(this.client.getCartracks().size());
//this.clientService.Edit(this.client);
}
}
编辑的表单值不会在启用Ajax的commandButton上提交，除非它们在execute属性中显式命名。试着添加这个:
<h:commandButton value="Change" >
<f:ajax execute="@form" render="@form" listener="#{editClientBean.edit}" />
</h:commandButton>
@form是execute和render属性中的保留关键字，用于指示Ajax表单提交包含表单命名容器和该表单中的所有子元素。您指定提交要应用于模型的所有表单值，然后在render属性中指示在服务器端处理后重新呈现所有表单元素。