Servlet实现控制文件下载速度
jopen
11年前
long speed =1024*100L;//限制下载速度为100k/s, long current=0; ServletOutputStream out = resp.getOutputStream(); File file =new File("xxxxxx"); FileInputStream in = new FileInputStream(file); byte[]temp=new byte[1024]; int i; long startTime=System.currentTimeMillis(); while((i=in.read(temp))!=-1){ current=current+i; out.write(temp); if(current>speed){ startPause(startTime+1000); current=0; startTime=System.currentTimeMillis(); } } in.close(); } private void startPause(long time){ while(true){ if(System.currentTimeMillis()>time){ break; } } }