File upload primefaces handleFileUpload不'；t触发器

我正在尝试使用primefaces fileUpload实现一个页面，但是我的handleUpload函数没有被触发。 我的xhtml：

<h:form enctype="multipart/form-data">
  <p:panel id="uploadFormPanel" header="File upload">
     <h:panelGrid columns="2" style="margin-bottom:10px" cellpadding="5">  
         <h:outputText value="#{criteriaTranslation.questionaireFile}:" />
         <p:fileUpload update="uploadMessages"   
                       fileUploadListener="#{critereCSVImporter.handleFileUpload}"
                       mode="advanced"
                       allowTypes="/(\.|\/)(csv)$/"/>  
    </h:panelGrid>
    <p:growl id="uploadMessages" showDetail="true"/>
  </p:panel>
</h:form> 

My web.xml：

<filter>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <filter-class>
        org.primefaces.webapp.filter.FileUploadFilter
    </filter-class>
</filter>
<filter-mapping>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>

PrimeFaces文件上载筛选器
org.primefaces.webapp.filter.FileUploadFilter
PrimeFaces文件上载筛选器
Facesservlet

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我遗漏了什么吗？

将commons文件上载和commons io JAR放在您的lib文件夹中

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您使用的primefaces版本是什么？您是否将commons fileupload和commons io JAR放在了您的lib文件夹中？

<filter>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <filter-class>
        org.primefaces.webapp.filter.FileUploadFilter
    </filter-class>
</filter>
<filter-mapping>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>