java file download

java file download

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String filePath = "filePath"; String fileName = file1 + ".txt"; String fileNameOrg = new String(fileName.getBytes("UTF-8"), "ISO-8859-1"); try{ request.setCharacterEncoding("UTF-8"); fileName = new String(fileName.getBytes("UTF-8"), "UTF-8"); File file = new File(filePath, fileName); if(file.isFile()){ int bytes = (int)file.length(); String header = request.getHeader("User-Agent"); if (header.contains("MSIE") || header.contains("Trident")) { fileNameOrg = URLEncoder.encode(fileNameOrg,"UTF-8").replaceAll("\\+", "%20"); response.setHeader("Content-Disposition", "attachment;filename=" + fileNameOrg + ";"); } else { fileNameOrg = new String(fileNameOrg.getBytes("UTF-8"), "ISO-8859-1"); response.setHeader("Content-Disposition", "attachment; filename=\"" + fileNameOrg + "\""); } response.setContentType( "application/download; UTF-8" ); response.setContentLength(bytes); response.setHeader("Content-Type", "application/octet-stream"); response.setHeader("Content-Transfer-Encoding", "binary;"); response.setHeader("Pragma", "no-cache;"); response.setHeader("Expires", "-1;"); BufferedInputStream fin = new BufferedInputStream(new FileInputStream(file)); BufferedOutputStream outs = new BufferedOutputStream(response.getOutputStream()); byte[] readByte = new byte[4096]; try{ while((bytes = fin.read(readByte)) > 0){ outs.write(readByte, 0, bytes); outs.flush(); } } catch(Exception e){ e.printStackTrace(); } finally{ outs.close(); fin.close(); } } else { response.setCharacterEncoding("UTF-8"); response.setContentType("text/html; charset=UTF-8"); PrintWriter out = response.getWriter(); out.println("파일이 존재하지 않습니다."); } }catch(Exception e){ e.printStackTrace(); }

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from http://harrydony.tistory.com/931 by ccl(A) rewrite - 2021-11-15 22:02:13