步骤1:xhtml表单类型

<p:fileUpload id="fileupload_Test" 
                          fileUploadListener="#{CIM.handleFileUpload}" auto="true"
                          fileLimit="1"  label="Select Excel File" mode="advanced" 
                          invalidSizeMessage="File size limit exceeds.Maximum allowable size '#{CIM.xlFileSizeLimit}'MB. FileName: " 
                           sizeLimit="100000"
                          allowTypes="/(\.|\/)(xls|xlsx)$/"  onstart="PF('import_glasspane').block()" 
                          oncomplete="PF('import_glasspane').unblock()" >
            </p:fileUpload>

第2步：bean-listener

public void handleFileUpload(FileUploadEvent event) {
    FacesMessage message = new FacesMessage("Succesful", event.getFile().getFileName() + " is uploaded.");
    FacesContext.getCurrentInstance().addMessage(null, message);
}

注意：在wildfly版本：10，primefaces版本6.1.11中工作正常。
问题：迁移wildfly 20后，fileupload侦听器没有调用。