java 流实现文件下载
1. try { 2. // 读取文件并且设置相关参数 3. String filePath = "c:/test.txt"; 4. String fileName = "test.txt"; 5. File file = new File(filePath); 6. String fileName = new String(fileName.getBytes("gb2312"),"iso8859-1");//取消乱码 7. byte[] buf = new byte; 8. int len = 0; 9. BufferedInputStream br = null; 10. OutputStream ut = null; 11. response.reset();//必须加，不然保存不了临时文件 12. response.setContentType("application/x-msdownload"); 13. response.setHeader("Content-Disposition","attachment; filename=" + fileName); 14. 15. br = new BufferedInputStream(new FileInputStream(file)); 16. ut = response.getOutputStream(); 17. while((len=br.read(buf))!=-1){ 18. ut.write(buf, 0, len); 19. } 20. } catch (Exception e) { 21. e.printStackTrace(); 22. }
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