<form id="form1"   >

<table style="width:100%;border:0;">
    <tr>
	<th style="width:35;text-align: center;" class="must">圖片名稱：</th>
	<td><input  id="imgName" style="width:150px;" name="imagePath" verify="true" mustFill="true" maxlength="100" /></td>
	</tr>
						
	<tr id="fileSelect">
	<th></th>
	<td>
	<input type="file" name="file" id="doc" style="width:150px;" onchange="javascript:setImagePreview(this);">							
	</td>

   </table>
</form>
 

   //傳送檢查名稱是否重複的後臺函式的請求，可以忽略

    $.ajax({url:"<%=contextPath%>/imageUploadController/imageExistCheck",type:'POST',dataType:'json',data:data
					 ,success:function(msg){
					   if(msg.result==false&&$("#saveOrUpdata").val()!="1"){
						   
						   alert("名稱重複，請修改名稱");
							return 0;
						   }else{//沒重複或者要修改

//下面這個if用於驗證表單必填項是否都填了，忽略。							   
if(Common.verify($("#createForm"))){
//設定form的action									

$('#form1').attr('action', '<%=contextPath%>/imageUploadController/imageUpload');
									$("#form1").submit();
								}

							   }

					 },error:function(xhr){alert('錯誤\n'+xhr.result);}});
				return false;
			});

   	@RequestMapping(value="/imageUpload",method=RequestMethod.POST)
	public String upLoadImage(FireEquipmentInfo fireEquipmentInfo,HttpServletRequest req){
               //轉化request		
               MultipartHttpServletRequest multipartRequest =                             (MultipartHttpServletRequest) req;    
		MultipartFile multipartFile = multipartRequest.getFile("file");	
		
              //獲取原檔名	
              String fileName = multipartFile.getOriginalFilename();  
              //獲取原名字尾		
              String fileEnd = fileName.substring(fileName.lastIndexOf(".")+1).toLowerCase(); 
         String realName =null;
        //獲取專案根目錄
             String imagePath=req.getSession().getServletContext().getRealPath("/");
				
             String imageName=null;
            imageName=RequestUtil.getStringParameter(req, "imagePath");
            //拼接路徑和最終名
             imagePath+="img/login/";
	    realName=imageName+ "." + fileEnd;
           try {
				//例項化一個file
				File file = new File(imagePath);
				//建立路徑
				if(!file.exists())
					file.mkdirs();
		       //建立檔案
		        file=new File(imagePath+"/"+realName);
		        file = new File(imagePath,realName);
		        //檔案儲存
		        multipartFile.transferTo(file);
            } catch (Exception e) {
				req.setAttribute("msg", e.getMessage());
			}