Java PrimeFaces两个fileUpload控件在冲突中运行

我有一个带有两个文件上载控件的页面：

<h:panelGroup id="distinctAttachmentsPanel" rendered="#{multipleSendingController.selectedAttachmentList == 2}">
<h:outputText value="Allegati distinti" />
  <p:fileUpload id="distinctFileUpload" fileUploadListener="#{multipleSendingController.onDistinctFileUpload}"
    mode="advanced"
    multiple="true"
    sizeLimit="100000000"
    label="Sfoglia"
    uploadLabel="Carica"
    cancelLabel="Annulla"
    update=":form:uploadedDistinctFiles" />
  <p:selectManyCheckbox id="uploadedDistinctFiles" value="#{multipleSendingController.selectedDistinctAttachments}" converter="#{multipleSendingController.fileConverter}" layout="pageDirection">
    <f:selectItems value="#{multipleSendingController.distinctAttachments}" var="a" itemLabel="#{a.name}" itemValue="#{a}" />  
  </p:selectManyCheckbox>
  <h:outputText value="File excel" />
  <p:fileUpload id="excelFileUpload" fileUploadListener="#{multipleSendingController.onExcelFileUpload}"
    mode="advanced"
    multiple="true"
    sizeLimit="100000000"
    label="Sfoglia"
    uploadLabel="Carica"
    cancelLabel="Annulla"
    update=":form:uploadedExcelFiles" />
  <p:selectManyCheckbox id="uploadedExcelFiles" value="#{multipleSendingController.selectedExcelFiles}" converter="#{multipleSendingController.fileConverter}" layout="pageDirection">
    <f:selectItems value="#{multipleSendingController.excelFiles}" var="a" itemLabel="#{a.name}" itemValue="#{a}" />  
  </p:selectManyCheckbox>
</h:panelGroup>

当我在其中一个fileUpload控件中选择一个或多个文件时，相同的文件会显示在另一个控件中，就像在那里被选中一样。

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我想不出会发生什么。

您应该将每个文件上载放在一个单独的h:表单中