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似乎 CGI::Session expire() 函数仅在用户空闲指定时间间隔后才过期。我假设空闲它们意味着用户没有刷新页面或访问任何其他页面。

虽然我看到您可以使用 delete() 强制会话过期,但我没有看到一种自动强制会话过期的方法,无论使用是否空闲。

也许这不是想要的用户体验,但为了理解,有没有办法做到这一点,而不必跟踪时间间隔或使用任何额外的库?

如果会话在过期时返回一个新会话,那么 CGI::Session::is_expired 的意义何在?至少我的脚本似乎无法达到过期状态

  sub build_sss{
    my($this) = shift;

    $cgi = $this->cgi_obj();

    my $sid = $this->sid();
    my $sss = CGI::Session->load(undef, $cgi, {Directory=>'tmp'}) or die CGI::Session->errstr();

   #check expired session
    if ( $sss->is_expired() ) {
      my $expired_url = $ENV{'SCRIPT_URI'}.'?expired='.$sid;
      $this->session_status("SESSION_EXPIRED");
      print $cgi->redirect($expired_url); #when expired param is set shows a msg    
    }


    #check if empty create new
    if ( $sss->is_empty() ) {     
      $sss = $sss->new() or $sss->errstr;
      $this->session_status("SESSION_NEW");
      $sss->expire('30s');
      $sss->expire(_TEST_SUB_SESSION => '15s');
    }

    return $sss;
  }
4

2 回答 2

1

更新:是的,如果您希望会话根据创建时间到期,您必须继承 CGI::Session

1) 确保你有最新版本的 CGI::Session 2) 阅读 CGI::Session::Tutorial 3) 编写程序来证明你的主张,比如这个CGI::Session expire demo

#!/usr/bin/perl --

use strict;
use warnings;

use CGI();
use CGI::Session();

my ($oneid);
{
  my $one = CGI::Session->new or die CGI::Session->errstr;
  $one->expire('3s');
  $one->param(qw' var value ');
  $oneid = $one->id;

  print "set exire to 3 seconds\n";
}

for my $loop ( 1 .. 4 ) {
  sleep 1;
  my $bob = CGI::Session->load($oneid) or die CGI::Session->errstr;
  print "one second later $bob / $oneid load\n";
}

for my $loop ( 1 .. 4 ) {
  sleep 2;
  my $bob = CGI::Session->load($oneid) or die CGI::Session->errstr;
  print "two seconds later ";
  if ( $bob->is_expired ) {
    print "$bob / $oneid is_expired\n";
  } else {
    print "var=", $bob->param('var'), "\n";
  }
} ## end for my $loop ( 1 .. 4 )

{
  sleep 3;
  my $bob = CGI::Session->load($oneid) or die CGI::Session->errstr;
  print "three seconds later  ";
  if ( $bob->is_expired ) {
    print "$bob / $oneid is_expired\n";
  } else {
    print "var=", $bob->param('var'), "\n";
  }
}

__END__



set exire to 3 seconds
one second later CGI::Session=HASH(0xa965fc) / cf27e3ec9ff5a06a5bef4491e830c8b6 load
one second later CGI::Session=HASH(0x97a164) / cf27e3ec9ff5a06a5bef4491e830c8b6 load
one second later CGI::Session=HASH(0xbef68c) / cf27e3ec9ff5a06a5bef4491e830c8b6 load
one second later CGI::Session=HASH(0xbef56c) / cf27e3ec9ff5a06a5bef4491e830c8b6 load
two seconds later var=value
two seconds later var=value
two seconds later var=value
two seconds later var=value
three seconds later  CGI::Session=HASH(0xa965ec) / cf27e3ec9ff5a06a5bef4491e830c8b6 is_expired
于 2011-10-15T15:07:45.260 回答
0

从文档中:

“is_empty() - 为空的会话返回 true。这是测试请求的会话是否成功加载的首选方法”

我不明白您是如何在会话为空的情况下尝试使会话过期的?

#check if empty create new
if ( $sss->is_empty() ) {     
  $sss = $sss->new() or $sss->errstr;
  $this->session_status("SESSION_NEW");
  $sss->expire('30s');
  $sss->expire(_TEST_SUB_SESSION => '15s');
}

你也许是说:

if ( !$sss->is_empty() ) { #...Not empty?
于 2011-10-14T03:56:00.167 回答