问题解决,在Spring拦截器方面出现问题:我在Spring配置文件中配置了一个拦截器,拦截非登陆用户对系统的操作,也就是检测session是否存在,如果存在,则可以进行操作,否则任何操作都将返回到登陆。当我采用此方法进行下载的时候,可能(只是猜测)重新设置了
response.setContentType("application/ms-download;charset=dos");
response.setHeader("Content-disposition", "attachment; filename=" + fileName);
因而导致session失效……虽然问题解决,但是对其中道理并不是很明白,同样希望各位给以指点…多谢!
response.setContentType("application/ms-download;charset=dos");
response.setHeader("Content-disposition", "attachment; filename=" + fileName);
因而导致session失效……虽然问题解决,但是对其中道理并不是很明白,同样希望各位给以指点…多谢!
<%
String downloadFile = "C:\\boot.ini";
BufferedInputStream inputstream = new BufferedInputStream(new
FileInputStream(downloadFile));
response.setContentType("application/octet-stream");
response.addHeader("Content-Disposition",
"attachment; filename=\"write.ini\"");
response.setHeader("Accept-ranges", "bytes");
byte[] b = new byte[100];
int len;
OutputStream outp=response.getOutputStream();
try{
while ( (len = inputstream.read(b)) > 0) {
outp.write(b, 0, len);;
}
inputstream.close();
outp.close();}
catch(Exception e){
e.printStackTrace();
outp.close();
}
%>