我曾经验证两个密码，检查它们是否相同，这样:
Password: <h:message id="m_password" for="password" /><br/>
<h:inputSecret id="password" value="#{userC.user.password}" maxlength="15" size="15" required="true">
<f:validator validatorId="confirmPasswordValidator" />
<f:attribute name="confirm" value="#{confirmPassword.submittedValue}" />
</h:inputSecret>
<br/>
Password (yes, again): <h:message id="m_confirm_password" for="confirm_password" /><br/>
<h:inputSecret id="confirm_password" binding="#{confirmPassword}" maxlength="15" size="15" required="true">
<f:ajax event="blur" render="m_password m_confirm_password" />
</h:inputSecret>
<br/>
在验证器中:
@FacesValidator("confirmPasswordValidator")
public class ConfirmPasswordValidator implements Validator {
@Override
public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
String password = (String) value;
String confirm = (String) component.getAttributes().get("confirm");
if (password == null || confirm == null) {
return; // Just ignore and let required="true" do its job.
}
if (!password.equals(confirm)) {
throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, null, "passwords don't match"));
}
}
}
但是我想在密码的第二个字段失去焦点时进行此验证，这就是我使用
<f:ajax..> 的原因。领域，但这里似乎缺少一些东西。会是什么呢 ？
更新
<h:form id="change_password_form">
Password: <h:message id="m_password" for="password" /><br/>
<h:inputSecret id="password" value="#{userC.user.password}" maxlength="15" size="15" required="true">
<f:validator validatorId="confirmPasswordValidator" />
<f:attribute name="confirm" value="#{confirmPassword.submittedValue}" />
</h:inputSecret>
<br/>
Password (yes, again): <h:message id="m_confirm_password" for="confirm_password" /><br/>
<h:inputSecret id="confirm_password" binding="#{confirmPassword}" maxlength="15" size="15" required="true">
<f:ajax event="blur" execute="@this password" render="m_password m_confirm_password" />
</h:inputSecret>
<br/>
<h:commandButton id="change_passord" action="#{userC.changePassword}" value="Change Password" />
<h:messages globalOnly="true" escape="false" />
</h:form>
更新 2
使用 BalusC 建议一切顺利，因为我忘记定义我的
template :<!DOCTYPE html>
<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">
<ui:composition template="/resources/jsf/include/default.xhtml">
<ui:define name="content">
<h:form id="change_password_form">
Password: <h:message id="m_password" for="password" /><br/>
<h:inputSecret id="password" value="#{userC.user.password}" maxlength="15" size="15" required="true">
<f:validator validatorId="confirmPasswordValidator" />
<f:attribute name="confirm" value="#{confirmPassword.submittedValue}" />
</h:inputSecret>
<br/>
Password(yes, again): <h:message id="m_confirm_password" for="confirm_password" /><br/>
<h:inputSecret id="confirm_password" binding="#{confirmPassword}" maxlength="15" size="15" required="true">
<f:ajax event="blur" execute="@this password" render="m_password m_confirm_password" />
</h:inputSecret>
<br/>
<h:commandButton id="change_passord" action="#{userC.changePassword}" value="Change password" />
<h:messages globalOnly="true" escape="false" />
</h:form>
</ui:define>
</ui:composition>
</html>
最佳答案
<f:ajax>默认情况下仅提交当前组件(如 execute="@this" )。如果您还打算提交另一个组件，则需要明确指定其客户端 ID:
<f:ajax ... execute="@this password" />
password 相关联的验证器组件也将被触发。也可以看看:
更新 :根据评论，确保您拥有
<h:head>在模板中，否则 JSF 将无法自动包含必要的 jsf.js包含负责 <f:ajax> 的代码的 JavaScript 文件魔法。
关于ajax - 如何通过 f :ajax when losing focus of second field? 验证两个密码字段，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15891264/