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ServletOutputStream op = response.getOutputStream();
JszyDao jd=new JszyDao();
int fid=0;
try
{
fid=Integer.parseInt(request.getParameter("fid"));
}catch(Exception ex){
out.print("数据不存在.");
return;
}
BufferedInputStream is=jd.getJszyIo(fid);
try{
int len=0;
byte[] buf=new byte[10*1024];
while((len= is.read(buf))!=-1) {
op.write(buf, 0, len);
}
is.close();
op.flush();
op.close();
}catch(Exception ex){
ex.printStackTrace();
}