答复: ext2.0如何做文件上传？

                     Extjs+struts实现文件上传
1.fileUpload.js

  Ext.onReady(function(){ 
  
   var form = new Ext.form.FormPanel({ 
      renderTo:'file',
      labelAlign: 'right', 
      title: '文件上传', 
      labelWidth: 60, 
      frame:true,
      url: '../upload.do?op=uploadFile',//fileUploadServlet 
      width: 300, 
      height:200,
      fileUpload: true,
    

      items: [{ 
         xtype: 'textfield', 
         fieldLabel: '文件名', 
         name: 'file', 
         inputType: 'file'//文件类型 
       }], 
      
     buttons: [{ 
         text: '上传', 
         handler: function() { 
         form.getForm().submit({ 
         success: function(form, action){ 
            Ext.Msg.alert('信息', '文件上传成功！'); 
         }, 
        failure: function(){ 
           Ext.Msg.alert('错误', '文件上传失败'); 
        } 
      }); 
     } 
   }] 
   }); 

   }); 

2.uploadAction.java   其中使用了cos上传组件，下载地址：http://www.servlets.com/cos/cos-05Nov2002.zip

package zx.struts.actions;

import java.io.File;
import java.util.Enumeration;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.oreilly.servlet.MultipartRequest;


public class UploadAction extends DispatchAction{
	public ActionForward uploadFile(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)throws Exception {

		
		String saveDirectory ="F:\\jboss-4.2.2.GA\\server\\default\\deploy\\userDemo.war\\upload";      //文件上传后，保存的位置

		int maxPostSize =3 * 5 * 1024 * 1024 ;   //每个文件最大5MB,最多3个文件,所以... 
      
		//response的编码为"gb2312"
		MultipartRequest multi = 
		       new MultipartRequest(request, saveDirectory, maxPostSize, 
		                            "gb2312"); 

        //输出反馈信息 
		 Enumeration files = multi.getFileNames();  
		     while (files.hasMoreElements()) { 
		       
		       String name = (String)files.nextElement(); 
		       File f = multi.getFile(name); 
		       if(f!=null){ 
		         String fileName = multi.getFilesystemName(name); 
		         String lastFileName= saveDirectory+"\\" + fileName; 
		         System.out.println("上传的文件:"+lastFileName); 
		         

		       } 
		     } 

    
   return null;
}
}