檔案上傳

public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=UTF-8");
		PrintWriter out = response.getWriter();
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		try {
			/*以上兩行不能顛倒，否則會出現亂碼*/
			SmartUpload su = new SmartUpload();
			// 設定允許上傳的檔案
			su.setAllowedFilesList("txt,jpg");
			// 獲取config物件
			ServletConfig config = this.getServletConfig();
			// 上傳初始化
			su.initialize(config, request, response);
			// 上傳檔案
			su.upload();
			// 讀取網站當前實際物理路徑
			String rootPath = config.getServletContext().getRealPath("/");
			// 列印獲取的當前路徑
			System.out.println(rootPath);
			String uname = su.getRequest().getParameter("uname");
			// 根據使用者名稱建立一個目錄專門儲存使用者圖片
			File file = new File(rootPath+uname);
			if (!file.exists()) {
				file.mkdir();
			}
			// 將上傳檔案全部儲存到指定目錄
			int  count = su.save(file.getAbsolutePath());
			System.out.println("列印count"+count);
			out.print("保持成功");
		} catch (Exception e) {
			out.print("儲存失敗");
			e.printStackTrace();
			
		}
		out.close();
	}
 

檔案下載

public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=UTF-8");
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		SmartUpload su = new SmartUpload();
		su.initialize(this.getServletConfig(), request, response);
		su.setContentDisposition(null);
		String rootPath = this.getServletConfig().getServletContext().getRealPath("/");
		try {
			su.downloadFile(rootPath+"/ming.txt");
		} catch (SmartUploadException e) {
			e.printStackTrace();
		}
	}