当通过p：fileUpload mode = advanced上传文件时，传递另一个输入组件的值

问题描述

  
您可以使用fileUpload的 onstart 一个用于处理selectOneMenu的remoteCommand，并将其保存为必须视图范围相同的bean的属性。
 < p：fileUpload id =fileUploadmode =advancedonstart =submitCollection（）/> 
 
< p：remoteCommand name =submitCollectionprocess =@ this Collection/> 
  
至于fileUpload的宽度，可以使用下面的css：
  .ui-fileupload {
 width：400px; //将px改成适合你的值
} 
  
希望这有助于您。
 
i have a the add the primefaces fileupload.
<h:form id="form" enctype="multipart/form-data">    
<h:selectOneMenu id="Collection" value="#{imputData.collList.currentColl}">
<f:selectItems value="#{imputData.collList.collList}" />
</h:selectOneMenu>      
<p:fileUpload id="fileUpload" label="Durchsuchen" uploadLabel="Upload" cancelLabel="zurück" fileUploadListener="#{imputData.handleFileUpload}" mode="advanced" dragDropSupport="true" update="Collection,messages" sizeLimit="100000" allowTypes="/(\.|\/)(txt|cvs)$/" />  

 <p:growl id="messages" showDetail="true"/>             
<h:commandButton id="read" action="#{imputData.imput}" value="#{msgs.read}"/>

</h:form>
It looks like this
I have two question.How can i made the Fileupload smaller. Mean not wide over the hole page?
To get the name from the selectOneMenu i must klick on the read-button (Lesen). If i klick und the upload-button i get no information from the SelectOneMenu (null). Must i write ajax="true" in the <p:fileUpload.. or something to get the Information from selectOneMenu in the upload-Button?
i write the Id from the Collection in the update of fileUpload update="Collection,messages" but it doesn't slove my problem.
 解决方案 
You can use the onstart of the fileUpload, which would call a remoteCommand to process your selectOneMenu and save it as property of the same bean which must be view scoped.
<p:fileUpload id="fileUpload" mode="advanced" onstart="submitCollection()" />

<p:remoteCommand name="submitCollection" process="@this Collection" />
As for the width of the fileUpload, you can use the following css:
.ui-fileupload {
   width: 400px;//change the px into what fits you
}
Hope this helps.
                        
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