JAVA下载视频完成后进行一次下载数据的记录，代码无效。求大神指点迷津

本段代码在本地WINDOWS系统环境下没有问题，在我自己开的Linux测试服务器上也没问题，但是一部署到正式服务器上就不执行记录下载次数的代码。主要是finally中的代码不执行。
FTPClient ftpClient = null;
boolean isException = false;
boolean isfin = false;
try {
ftpClient = new FTPClient();
ftpClient.connect(server, port);
ftpClient.login(username, password);
ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
FTPFile file[] = ftpClient.listFiles(path);
if(file != null){
System.out.println("ftp file:"+file[0].getSize());
}
bis = ftpClient.retrieveFileStream(path);

if (bis != null) {
response.setHeader("Content-Type","video/mpeg");
response.setHeader("Content-disposition",
"attachment; filename=" + pix);
bos = new java.io.BufferedOutputStream(response
.getOutputStream());
byte[] buff = new byte[2048];
int bytesRead;
int i = 0;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
i++;
}

byte[] bs2 = new byte[bis.available()];
bos.write(bs2);

bos.flush();
out.clear();
out = pageContext.pushBody();

}
}catch (Exception e) {
isException = true;
} finally {
if(!isException){
//没有异常，则下载记录加1
ServletContext sc=getServletConfig().getServletContext();
org.springframework.web.context.WebApplicationContext parent = org.springframework.web.context.support.WebApplicationContextUtils.getWebApplicationContext(sc);
IDAO idao=(IDAO)parent.getBean("idaotargets");
int videoflag=Integer.parseInt(flag);
User ut=(User )request.getSession().getAttribute("Person");
Videodown vd=new Videodown();
vd.setAddtime(new Date());
vd.setDowncount(1);
vd.setPicfilename(r.getPicfilename());
vd.setVideoid(r.getId());
vd.setTitle(r.getTitle());
vd.setUserid(ut.getUserid());
vd.setUsername(ut.getUsername());
vd.setVideoqianfatime(r.getVideoqianfatime());
vd.setVideoflag(videoflag);
vd.setIsReal(1);
idao.insert(vd);
//}
}
if (bis != null) {
bis.close();
bis = null;
}
if (bos != null) {
bos.close();
bos = null;
}
if (ftpClient != null) {
ftpClient.disconnect();
ftpClient = null;
}
}

可能是你的执行过程中有异常，导致isException=true，所以建议你在catch到Exception后要么记log要么把异常再抛出去，这种catch后没有任何记录的行为本身就是很危险，不提倡的！

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