public void copyFolder(String oldPath, String newPath) {
		try {
			new File(newPath).mkdirs(); // 如果文件夹不存在 则建立新文件
			File a = new File(oldPath);
			String[] file = a.list();
			File temp = null;
			for (int i = 0; i < file.length; i++) {
				if (oldPath.endsWith(File.separator)) {
					temp = new File(oldPath + file[i]);
				} else {
					temp = new File(oldPath + File.separator + file[i]);
				}
				if (temp.isFile()) {
					FileInputStream input = new FileInputStream(temp);
					FileOutputStream output = new FileOutputStream(newPath
							+ "/" + (temp.getName()).toString());
					byte[] b = new byte[1024 * 5];
					int len;
					while ((len = input.read(b)) != -1) {
						output.write(b, 0, len);
					}
					output.flush();
					output.close();
					input.close();
				}
				if (temp.isDirectory()) {// 如果是子文件
					copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
				}
			}
		} catch (Exception e) {
			message = "复制整个文件夹内容操作出错";
		}
	}