以json格式的解析FTP上的文件，10秒超时

//FTP连接省略....... long secound[] = {4,3,2,1}; int i = 0;//记录循环次数 while(null != ftpUtil && null != ftpUtil.getBsFtpPath()){ SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHH24mmss"); String strDate = sdf.format(new Date()); int num = (int) (Math.random()*9000+1000); InputStream iptStream = ftpUtil.readRemote("simple_"+strDate+num); int len = 0; int tmp = 0; byte []b = new byte[1024]; while((tmp = iptStream.read()) != -1){ b[len] = (byte) tmp; len++; } String str = new String(b,0,len); if(StringUtils.isNotBlank(str)){ JSONArray jsonArray = JSONArray.fromString(str); if(jsonArray.length() > 0 && jsonArray != null){ JSONObject jsonObj = (JSONObject) jsonArray.get(0); if(jsonObj.length() > 0 && jsonObj != null){ List list = new ArrayList(); for(int k=0;k<jsonObj.length();k++){ Map map = new HashMap(); map.put("xm", jsonObj.getString("XM")); map.put("cert", jsonObj.getString("SFZH")); list.add(map); return ; } } } } Thread.sleep(secound[i] * 1000); if(secound[i]==1){//当i等于1循环结束，并且报错超时 Exception();//超时错误提示结束 return; } i++; } }