Software caused connection abort: socket write error解决方案

public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        String aFilePath = null;    //要下载的文件路径        String aFileName = null;    //要下载的文件名        response.setHeader("pragma","no-cache");           response.setHeader("cache-control","no-cache");         response.setDateHeader("Expires",0);                   request.setCharacterEncoding("GBK");        try        {                        String str = getServletContext().getRealPath("/");            str = str.replaceAll("\\\\", "/");// 转换\为/;                        String temp_name = request.getParameter("name");//取文件实际路径和名称            String title = request.getParameter("jc");//取下载文件的名称            String temp_1 = temp_name.substring(temp_name.lastIndexOf("."));//取扩展名            aFilePath = str;             aFileName = temp_name.substring(temp_name.lastIndexOf("/")+1);            //碰到title中有.的，取最后一个.的前面部分作为title            if(title.lastIndexOf(".")!= -1)title = title.substring(0,title.lastIndexOf("."));                                                String abc = title+temp_1;            String newsName = java.net.URLDecoder.decode(abc,"GBK");            response.setContentType("text/x-msdownload");             //response.addHeader("Content-Disposition","attachment; filename=\"" + new String(abc.getBytes("GBK"),"utf-8") + "\"");            response.addHeader("Content-Disposition","attachment; filename=\"" + new String(newsName.getBytes(),"ISO-8859-1") + "\"");            java.io.OutputStream os = null;            java.io.FileInputStream fis = null;            try {                os = response.getOutputStream();                fis = new java.io.FileInputStream(aFilePath + temp_name);                byte[] b = new byte[1024];                int j = 0;                while ((j = fis.read(b)) > 0) {                    os.write(b, 0, j);                }                fis.close();                os.flush();//报错信息指向了这行                os.close();            } catch (Exception e) {                e.printStackTrace();            }            ///                 }      catch(Throwable e)    {    //log.error("FileDownload doGet() IO error!",e);     }            }