日期:2014-05-16  浏览次数:20489 次

将xls中的数据写入数据库
 <script>

    function callUpload() {
     var fileValue = document.FileUpload.file1.value;
     if (fileValue == "") {
     	alert("请选择所需上传的文件!"); 
     	return false;
     }
      showLayer.style.display = "inline";  
     //count()
     FileUpload.submit(); 
    
   }
</script>
<body>
<form  name="FileUpload" method="post" action="uploads" enctype="multipart/form-data" >  
    <table border="0">
      <tr>
        <td nowrap> 
          <div align="left">导入的EXCEL文件(导入的明细会复盖原有明细数据):</div>
        </td>
      </tr>
      <tr>
        <td nowrap> 
        <input type="file" class="mybutton" name="file1" size="50" style="border-style: solid; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px">
        <input type="submit" class="mybutton" value="导入" name="shangchuan" onClick="return callUpload()" style="border-style: solid; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px" >
        </td>
      </tr> 
    </table>
    <table width="100%">
    	<tr>
      	<td>
      		<hr width="100%">
      	</td>
      </tr>
    </table>
    </form>
</body>

?

protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {  
		  final long MAX_SIZE = 3 * 1024 * 1024;// 设置上传文件最大为 3M
		  String  u_name="";
		   // 允许上传的文件格式的列表
		  final String[] allowedExt = new String[] { "xls", "jpeg", "gif", "txt",
		     "doc", "docx", "mp3", "wma" };
		  response.setContentType("text/html");
		   // 设置字符编码为UTF-8, 这样支持汉字显示
		  response.setCharacterEncoding("GBK");
		  //实例化RequestContext对象
		  RequestContext requestContext = new ServletRequestContext(request);  
		  if(FileUpload.isMultipartContent(requestContext)){} 
		  // 实例化一个硬盘文件工厂,用来配置上传组件ServletFileUpload
		  DiskFileItemFactory dfif = new DiskFileItemFactory();  
	      //上传文件胡原始路径
	      String  realpath = this.getServletContext().getRealPath("/")+"ImagesUploadTemp" ;
	      // 设置存放临时文件的目录
		  dfif.setRepository(new File(realpath));
		  dfif.setSizeThreshold(4096);// 设置上传文件时用于临时存放文件的内存大小,这里是4K.多于的部分将临时存在硬盘 
		  // 用以上工厂实例化上传组件
		  ServletFileUpload sfu = new ServletFileUpload(dfif);
		  System.err.println(" reapath="+this.getServletContext().getRealPath("/")+"ImagesUploadTemp");
		   // 设置最大上传尺寸
		  sfu.setSizeMax(MAX_SIZE);  
		  PrintWriter out = response.getWriter();
		  // 从request得到 所有 上传域的列表
		  List fileList =  null; 
		  try {
			   fileList = sfu.parseRequest(request); 
		  } catch (FileUploadException e) {// 处理文件尺寸过大异常
			   e.printStackTrace();
			   if (e instanceof SizeLimitExceededException) {
				   out.println("文件尺寸超过规定大小:" + MAX_SIZE + "字节<p />");
				   out.println("<a href=\"excelInsert.action\" target=\"_top\">返回</a>");
				   return;
			   }
			   //e.printStackTrace();
		   }
		   // 没有文件上传
		   if (fileList == null || fileList.size() == 0) {
			   out.println("文件大小不能为空,请选择上传文件<p />");
			   out.println("<a href=\"excelInsert.action\" target=\"_top\">返回</a>");
			   return;
		   }
		   // 得到所有上传的文件
		   Iterator fileItr = fileList.iterator();
		   // 循环处理所有文件
		   while (fileItr.hasNext()) {
			    FileItem fileItem = null;
			    String path = null;
			    long size = 0;
			    // 得到当前文件
			    fileItem = (FileItem) fileItr.next();
			    // 忽略简单form字段而不是上传域的文件域(<input type="text" />等)
			    if (fileItem == null || fileItem.isFormField()) {
			     continue;
			    }
			    // 得到文件的完整路径
			    path = fileItem.getName();  
			    path = new String(path.getBytes("ISO-8859-1"),"UTF-8");
			    System.out.println("完整路径="+path);
			    // 得到文件的大小
			    size = fileItem.getSize();
			    if ("".equals(path) || size == 0) {