ajax - Primefaces ExceptionHandler不能像展示中那样工作

我已经在primefaces中尝试过新的ExceptionHandler标记，但是似乎我缺少此标记。

基本上，我的代码与http://www.primefaces.org/showcase/ui/misc/exceptionHandler.xhtml中的代码相同，问题在于添加此标记不会改变任何内容，而我在客户端上不会得到任何好处。
标准js API不能与主按钮一起使用:

jsf.ajax.addOnError(function(data) {alert('Error');})

我注意到正在运行的应用程序与Primefaces展示柜之间的唯一区别是，我得到的Ajax响应与展示柜的响应不同:

我的回复:

展示柜的回应

这是代码

<h:form>
<h3 style="margin-top:0">AJAX</h3>
<p:commandButton actionListener="#{exceptionHandlerView.throwViewExpiredException}"
                 ajax="true"
                 value="Throw ViewExpiredException!" />
<p:commandButton actionListener="#{exceptionHandlerView.throwNullPointerException}"
                 ajax="true"
                 value="Throw NullPointerException!" />
<p:commandButton actionListener="#{exceptionHandlerView.throwWrappedIllegalStateException}"
                 ajax="true"
                 value="Throw IllegalStateException!" />

<h3>Non-AJAX</h3>
<p:commandButton actionListener="#{exceptionHandlerView.throwViewExpiredException}"
                 ajax="false"
                 value="Throw ViewExpiredException!" />
<p:commandButton actionListener="#{exceptionHandlerView.throwNullPointerException}"
                 ajax="false"
                 value="Throw NullPointerException!" />


<p:ajaxExceptionHandler type="javax.faces.application.ViewExpiredException"
                        update="exceptionDialog"
                        onexception="PF('exceptionDialog').show();" />

<p:ajaxExceptionHandler type="java.lang.NullPointerException"
                        update="exceptionDialog"
                        onexception="PF('exceptionDialog').show();" />

<p:dialog id="exceptionDialog" header="Exception '#{pfExceptionHandler.type}' occured!" widgetVar="exceptionDialog"
          height="500px">
    Message: #{pfExceptionHandler.message} <br/>
    StackTrace: <h:outputText value="#{pfExceptionHandler.formattedStackTrace}" escape="false" /> <br />

    <p:button onclick="document.location.href = document.location.href;"
              value="Reload!"
              rendered="#{pfExceptionHandler.type == 'javax.faces.application.ViewExpiredException'}" />
</p:dialog>

package org.primefaces.showcase.view.misc;


import javax.faces.FacesException;
import javax.faces.application.ViewExpiredException;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.context.FacesContext;

@ManagedBean
@RequestScoped
public class ExceptionHandlerView {

    public void throwNullPointerException() {
        throw new NullPointerException("A NullPointerException!");
    }

    public void throwWrappedIllegalStateException() {
        Throwable t = new IllegalStateException("A wrapped IllegalStateException!");
        throw new FacesException(t);
    }

    public void throwViewExpiredException() {
        throw new ViewExpiredException("A ViewExpiredException!",
                FacesContext.getCurrentInstance().getViewRoot().getViewId());
    }
}

最佳答案

再次打开您给定的展示链接。现在，单击“文档”选项卡。您将看到:



按指示行动。