文件上传功能

1.表单必须这样写:

<form name="wzBaiscBusiForm" method="post" enctype="multipart/form-data" action="">

 

2.Action中的处理代码

MultiPartRequestWrapper req = (MultiPartRequestWrapper) ServletActionContext.getRequest();
  String attmNumber = "";
  Enumeration enu = req.getFileParameterNames();
  String realpath = Config.getInstance().getValue("..."); // 附件存放路径
   while (enu.hasMoreElements()) { // 对每一个文件域进行遍历
   String controlName = (String) enu.nextElement();
   String[] fileNames = req.getFileNames(controlName);
   File[] uploadFiles = req.getFiles(controlName);
   for (int i = 0; i < uploadFiles.length; i++) {
    // 创建文件夹,将文件保存到目录
    File dir = new File(req.getRealPath("/") + realpath + "/");
    if (!dir.exists())
     dir.mkdir();
    File uploadFile = uploadFiles[i];
    File file = new File(req.getRealPath("/") + realpath + "/"
      + fileNames[i]);
    byte[] data = new byte[8192];
    int byteRead = -1;
    FileInputStream in = new FileInputStream(uploadFile);
    FileOutputStream out = new FileOutputStream(file);
    while ((byteRead = in.read(data)) != -1) {
     out.write(data, 0, byteRead);
     out.flush();
    }
    out.close();
    in.close();
   }