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private void doFileUpload(HttpSession session, HttpServletRequest request,
HttpServletResponse response) throws IOException
{
try
{
long totalSize = request.getContentLength();

// 创建UploadListener对象
UploadListener listener = new UploadListener(totalSize);

// 启动监听状态
listener.start();

// 将监听器对象的状态保存在Session中
session.setAttribute("FILE_UPLOAD_STATS",
listener.getFileUploadStats());

// 创建MonitoredDiskFileItemFactory对象
MonitoredDiskFileItemFactory factory = new MonitoredDiskFileItemFactory(
listener);
factory.setSizeThreshold(UPLOAD_THRESHOLD_SIZE);

// 通过该工厂对象创建ServletFileUpload对象
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8");
upload.setSizeMax(UPLOAD_MAX_SIZE);
// 将转化请求保存到list对象中
List items = upload.parseRequest(request);

// 停止使用监听器
listener.done();

boolean hasError = false;

// 循环list中的对象
for (Iterator i = items.iterator(); i.hasNext();)
{
FileItem fileItem = (FileItem) i.next();
//如果该FileItem不是表单域
if (!fileItem.isFormField())
{
try
{
//调用processUploadedFile方法,将数据保存到文件中
processUploadedFile(fileItem, request);
}
catch (FileNotFoundException fe)
{
throw fe;
}
finally
{
//内存中删除该数据流
fileItem.delete();
}
}
else
{
//获取节点名称
String name = fileItem.getFieldName();
if ("AddNodeTextName1".equals(name))
{
nodeName = new String(fileItem.getString().getBytes("ISO8859-1"),"UTF-8");
}


}
}

//添加节点
try
{
//调用添加节点方法
}
catch (AppException e)
{
session.setAttribute("isSuccess", false);
e.printStackTrace();
}

if (!hasError) // 如果没有出现错误
{
//调用sendCompleteResponse方法
sendCompleteResponse(response, null);
}
else
{
sendCompleteResponse(response, this.getMessage("Upload.fail",
request));
}
}
}