java file 进度条

java  file 进度条

public class MyProgressListener implements ProgressListener
	{
		private HttpSession session;

		public MyProgressListener(HttpServletRequest req)
		{
			session = req.getSession();
			FileUploadStatus status = new FileUploadStatus();
			session.setAttribute("status", status);
		}

		/*
		 * pBytesRead 到目前为止读取文件的比特数 pContentLength 文件总大小 pItems 目前正在读取第几个文件
		 */
		public void update(long pBytesRead, long pContentLength, int pItems)
		{
			FileUploadStatus status = (FileUploadStatus) session.getAttribute("status");
			status.setPBytesRead(pBytesRead);
			status.setPContentLength(pContentLength);
			status.setPItems(pItems);
		}
	}
public class MyProgressListene