/** * 下载文件 */ public ActionForward downLoad(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { String destPathName = servlet.getServletContext().getRealPath("/"); response.reset(); String fileName = request.getParameter("fileName"); String filePath = request.getParameter("filePath"); filePath = destPathName + "/" + filePath; int index = fileName.lastIndexOf("."); String savename = fileName.substring(0, index); String hz = fileName.substring(index + 1, fileName.length()); // response.setCharacterEncoding("GBK"); //response.setContentType("application/OCTET-STREAM");//不禁用页面缓存，使文件可以直接打开 response.setHeader("Pragma", ""); response.setHeader("Cache-Control", ""); response.setContentType("application/x-msdownload"); // response.setContentType("application/ms-excel;charset=GBK"); response.setHeader("Content-Disposition", "attachment; filename=\"" + toUtf8String(savename) + "." + hz); ServletOutputStream sos = response.getOutputStream(); InputStream is = new java.io.FileInputStream(filePath); int i = 0; while ((i = is.read()) != -1) { sos.write(i); } is.close(); sos.close(); sos.flush(); return null; } // toUtf8String()对中文进行转换 // 下载为中文名不会出现乱码 private String toUtf8String(String s) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < s.length(); i++) { char c = s.charAt(i); if (c >= 0 && c <= 255) { sb.append(c); } else { byte[] b; try { b = Character.toString(c).getBytes("utf-8"); } catch (Exception ex) { System.out.println(ex); b = new byte[0]; } for (int j = 0; j < b.length; j++) { int k = b[j]; if (k < 0) k += 256; sb.append("%" + Integer.toHexString(k).toUpperCase()); } } } return sb.toString(); }
