Fileupload에서 파일이 업로드되고 있음을 어떻게 알 수 있습니까?

Question

UploadEvent은 파일 업로드시에만 Fileupload 구성 요소로 전송되지만 파일 업로드가 시작될 때 알려드립니다. 어쨌든이 일을하고 있습니까?

Answer 1

예 : - 파일 업로드하기 시작하면 내가 알 필요가

의 index.zul

<?page title="Auto Generated index.zul"?> 
<window title="Drop here" border="normal" width="100%" height="100%" 
    apply="org.zkoss.bind.BindComposer" 
    viewModel="@id('vm') @init('com.demo.DropFileViewModel')"> 

    <dropupload maxsize="5120" detection="none" 
     onUpload="@command('doUpload')"> 
    </dropupload> 

    <button label="Download" onClick="@command('doDownload')"></button> 


</window> 

DropFileViewModel.java

package com.demo; 

import org.zkoss.bind.BindContext; 
import org.zkoss.bind.annotation.Command; 
import org.zkoss.bind.annotation.ContextParam; 
import org.zkoss.bind.annotation.ContextType; 
import org.zkoss.util.media.Media; 
import org.zkoss.zhtml.Filedownload; 
import org.zkoss.zk.ui.event.UploadEvent; 
import org.zkoss.zul.Messagebox; 

public class DropFileViewModel { 
    Media media; 

    @Command 
    public void doUpload(@ContextParam(ContextType.BIND_CONTEXT) BindContext ctx) { 
     UploadEvent upEvent = null; 
     Object objUploadEvent = ctx.getTriggerEvent(); 
     if (objUploadEvent != null && (objUploadEvent instanceof UploadEvent)) { 
      upEvent = (UploadEvent) objUploadEvent; 
     } 
     if (upEvent != null) { 
      media = upEvent.getMedia(); 
      Messagebox.show("File Uploaded: " + media.getName()); 

     } 
    } 

    @Command 
    public void doDownload() { 
     if (media != null) 
      Filedownload.save(media); 
     else 
      Messagebox.show("First Drop Your File"); 

    } 
}