中的值不会传递给bean
问题描述：
我的代码存在问题，其中各个值的值不会传递给bean。该代码基本上与我的旧项目（其中一切正常工作都很好）相同，但无论我做什么，bean中的值都不会更新。我想要做的是让用户填写表格以注册一个帐户。我试图做它在两个方面：<p:inputText>中的值不会传递给bean
<p:inputText id="address" value="#{Register.user.address}.../>
这里Register与用户类，其中有几个属性，包括String地址的属性用户豆。这并没有真正的工作，所以我试图把getter和setter在RegisterBean，并将其设置为这种格式
public String getAddress(){
return user.getAdress();
}
，并使用它们像这样在XHTML
<p:inputText id="address" value="#{Register.address]".../>
，但它仍然不起作用。试过调试，而且看起来setter从来没有被输入。有人知道为什么这不起作用，并可能如何解决它？
这里是代码的其余部分：
的.xhtml
<h:head>
<title>Register</title>
</h:head>
<body>
<ui:composition template="userTemplate.xhtml">
<ui:define name="content">
<h:form>
<h:panelGrid id="grid" columns="3" >
<f:facet name="header">
Please fill in the required information
</f:facet>
<p:outputLabel value="Username" />
<p:inputText id="username" value="#{Register.user.username}" validator="#{Register.validateUsername}" required="true" requiredMessage="Cannot be blank!"/>
<p:message for="username"/>
<p:outputLabel value="Password"/>
<p:password id="password" value="#{Register.user.password}" validator="#{Register.validatePasswords}"/>
<p:message for="password" showSummary="true" showDetail="false"/>
<p:outputLabel value="Repeat password" />
<p:password id="repPassword" value="#{Register.user.repeatPass}" validator="#{Register.validateRepPassword}"/>
<p:message for="repPassword" showSummary="true" showDetail="false"/>
<p:outputLabel value="First name" />
<p:inputText id="firstName" value="#{Register.user.firstName}"/>
<p:message for="firstName" showSummary="true" showDetail="false"/>
<p:outputLabel value="Surname" />
<p:inputText id="surname" value="#{Register.user.surname}" required="true" requiredMessage="Cannot be blank!"/>
<p:message for="surname" showSummary="true" showDetail="false"/>
<p:outputLabel value="Address" />
<p:inputText id="address" value="#{Register.user.address}" required="true" requiredMessage="Cannot be blank!"/>
<p:message for="address" showSummary="true" showDetail="false"/>
<p:outputLabel value="Postnumber"/>
<p:inputText id="postnumber" value="#{Register.user.postnumber}" validatorMessage="Can only be numbers!" required="true" requiredMessage="Cannot be blank!"/>
<p:message for="postnumber" showSummary="true" showDetail="false"/>
<p:outputLabel value="City"/>
<p:inputText id="city" value="#{Register.user.city}" required="true" requiredMessage="Cannot be blank!"/>
<p:message for="city" showSummary="true" showDetail="false"/>
<p:outputLabel value="E-mail" />
<p:inputText id="email" validator="#{Register.user.validateEmail}" value="#{Register.email}"/>
<p:message for="email" showSummary="true" showDetail="false"/>
<p:outputLabel value="Phone number" />
<p:inputText id="phone" value="#{Register.user.phone}" required="true" validatorMessage="Phone number must be between 8 and 16 numbers long" requiredMessage="Cannot be blank!">
<f:validateLongRange minimum="8" maximum="16"/>
</p:inputText>
<p:message for="phone" showDetail="false" showSummary="true"/>
<p:commandButton type="submit" id="submitButton" value="submit" update="grid" ajax="true"/>
<p/>
#{Register.user}
</h:panelGrid>
</h:form>
</ui:define>
</ui:composition>
</body>
</html>
豆子：
@SessionScoped
@ManagedBean(name="Register")
public class registerBean implements Serializable {
private User user = new User();
public void validateUsername(FacesContext context, UIComponent component, Object value) {
String message = "";
String username = (String) value;
if(username == null || username.equals("")) {
((UIInput)component).setValid(false);
message = "Enter a username";
context.addMessage(component.getClientId(context), new FacesMessage(message));
}
//else user.setUsername(username);
}
public void validatePasswords(FacesContext context, UIComponent component, Object value) {
String message = "";
String password = (String) value;
boolean hasNumber = false;
for(int i = 0; i < password.length(); i++) {
if(Character.isDigit(password.charAt(i))) {
hasNumber = true;
}
}
if(!hasNumber && password.length() < 8) {
((UIInput)component).setValid(false);
message = "You need to have at least one number and the password must be atleast 8 characters long";
context.addMessage(component.getClientId(context), new FacesMessage(message));
}
//else user.setPassword(password);
}
public void validateRepPassword(FacesContext context, UIComponent component, Object value) {
String message = "";
String repPassword = (String) value;
if(!repPassword.equals(user.getPassword())) {
((UIInput)component).setValid(false);
message = "The passwords don't match.";
context.addMessage(component.getClientId(context), new FacesMessage(message));
}
//else user.setRepeatPass(repPassword);
}
public void validatePostnumber(FacesContext context, UIComponent component, Object value) {
String message = "";
try {
Integer postnumber = (Integer) value;
} catch (Exception e) {
((UIInput)component).setValid(false);
message = "The postnumber can only be numbers";
context.addMessage(component.getClientId(context), new FacesMessage(message));
}
//user.setPostnumber(((Integer) value).intValue());
}
public void validateEmail(FacesContext context, UIComponent component, Object value) {
String message = "";
try {
InternetAddress email = new InternetAddress((String) value);
email.validate();
} catch(AddressException ae) {
((UIInput)component).setValid(false);
message = "Type a valid email address";
context.addMessage(component.getClientId(context), new FacesMessage(message));
}
//user.setEmail((String)value);
}
public User getUser() {
return user;
}
}
最后正常用户的Java类
public class User {
private String username;
private String password;
private String repeatPass;
private String address;
private int postnumber;
private String city;
private String firstName;
private String surname;
private String email;
private long phone;
+setters/getters and a toString()
}
答
我解决了这个问题。我觉得有点愚蠢，但从一开始就没有任何问题。事情是因为所有的验证器和所有的东西，验证在几个领域被设置为false，导致值没有传回。只要我设置了所有正确的信息，它就起作用了。
尝试在你的commandButton中加入'process =“@ this”'。这是否工作？如果没有，那么你可能在表单提交时有验证错误，并且这些值没有被应用到模型中。要验证这一点，看看commandButton上的'immediate =“true”'是否调用了托管bean setter方法。 – 2013-03-07 19:32:58
您是否尝试在按钮上使用actionListener方法？ – Damian 2013-03-08 11:34:21
检查您的浏览器的JavaScript控制台（在网络选项卡上）以观察任何无声验证/转换错误 – kolossus 2013-03-08 13:17:18