Question

Java实现文件流下载文件，浏览器无反应，后台无错误！如何解决？

Answer 1

//response.reset(); response.setCharacterEncoding("UTF-8"); response.setContentType("application/octet-stream");//APPLICATION/OCTET-STREAM response.addHeader("Content-Disposition", "attachment; filename=\""+fileName+"\""); //response.setContentLength((int)text.length()); byte[] b=new byte[100]; java.io.OutputStream os=null; java.io.InputStream is=null; try{ is=new java.io.ByteArrayInputStream(text.getBytes()); os=response.getOutputStream(); int len=0; while((len=is.read(b))>0){ os.write(b,0,len); } response.setStatus( response.SC_OK ); //response.flushBuffer(); //os.flush(); //os.close(); is.close(); }catch(IOException e){ //response.reset(); e.printStackTrace(); } fileName的值是一个文件名，如：李四.csv 警告: Parameters: Invalid chunk ignored. Invalid chunk starting at byte [0] and ending at byte [0] with a value of [null] ignored 问题补充： //response.reset(); response.setCharacterEncoding("UTF-8"); response.setContentType("application/octet-stream");//APPLICATION/OCTET-STREAM response.addHeader("Content-Disposition", "attachment; filename=\""+fileName+"\""); //response.setContentLength((int)text.length()); byte[] b=new byte[100]; java.io.OutputStream os=null; java.io.InputStream is=null; try{ is=new java.io.ByteArrayInputStream(text.getBytes()); os=response.getOutputStream(); int len=0; while((len=is.read(b))>0){ os.write(b,0,len); } response.setStatus( response.SC_OK ); //response.flushBuffer(); //os.flush(); //os.close(); is.close(); }catch(IOException e){ //response.reset(); e.printStackTrace(); } fileName的值是一个文件名，如：李四.csv 警告: Parameters: Invalid chunk ignored. Invalid chunk starting at byte [0] and ending at byte [0] with a value of [null] ignored 问题补充：大同小异啊，也没有看见关键性的差异。不同的地方我都试过了，还是无法解决！ OpenMind 写道我有一段下载的代码，和你的有几个地方不一样，你自己看着修改一下吧： File file = new File(savePath + attachment.getPath()); /* 如果文件存在 */ if (file.exists()) { String disName = URLEncoder.encode( attachment.getDisplayName(), "UTF-8"); response.reset(); response.setContentType("application/x-msdownload"); response.addHeader("Content-Disposition", "attachment; filename=\"" + disName + "\""); int fileLength = (int) file.length(); response.setContentLength(fileLength); /* 如果文件长度大于0 */ if (fileLength != 0) { /* 创建输入流 */ InputStream inStream = new FileInputStream(file); byte[] buf = new byte[4096]; /* 创建输出流 */ ServletOutputStream servletOS = response .getOutputStream(); int readLength; while (((readLength = inStream.read(buf)) != -1)) { servletOS.write(buf, 0, readLength); } inStream.close(); servletOS.flush(); servletOS.close(); success = true; } } 问题补充：我已经把Log信息贴出来了，正在找问题，不知道有没有遇到过这个问题的！ lifeidgp 写道1.response.setContentType("application/x-msdownload");加入这样代码试试； 3.用firebug抓包吧。 lifeidgp 写道1.response.setContentType("application/x-msdownload");加入这样代码试试； 3.用firebug抓包吧。