我现在工作的一家公司将使用数据库会话来组织他们的服务器。我没有选择拒绝它:(
他们将使用的示例 php 代码是
sessioninit.php
<?
/* ------------------------------------------------------------------------
* Create a new database in MySQL called "sessions" like so:
*
* CREATE TABLE ucnovel_session (
* sesskey char(32) not null,
* expiry int(11) unsigned not null,
* value text not null,
* PRIMARY KEY (sesskey)
* );
*/
$SESS_DBH = "";
$SESS_LIFE = get_cfg_var("session.gc_maxlifetime");
function sess_open($save_path, $session_name)
{
global $SESS_DBH;
$sv = "192.168.0.3";
$SESS_DBH = mysql_pconnect($sv, "ucnovel", "비번") or die("Can't connect to SQL Server");
mysql_select_db("hotdog", $SESS_DBH) or die("Can't connect to SQL Server");
return true;
}
function sess_close()
{
return true;
}
function sess_read($key)
{
global $SESS_DBH, $SESS_LIFE;
//echo $key;
$qry = "SELECT value FROM ucnovel_session WHERE sesskey = '$key' AND expiry > " . time();
$qid = mysql_query($qry, $SESS_DBH);
if (list($value) = mysql_fetch_row($qid)) {
return $value;
}
return false;
}
function sess_write($key, $val)
{
global $SESS_DBH, $SESS_LIFE;
$expiry = time() + $SESS_LIFE;
$value = addslashes($val);
$qry = "SELECT COUNT(*) FROM ucnovel_session WHERE sesskey='$key'";
$qid = mysql_fetch_array(mysql_query($qry, $SESS_DBH));
if($qid[0]>0) {
$qry = "UPDATE ucnovel_session SET expiry = $expiry, value = '$value' WHERE sesskey = '$key'"; // AND expiry > " . time();
$qid = mysql_query($qry, $SESS_DBH);
} else {
$qry = "INSERT INTO ucnovel_session SET expiry = $expiry, value = '$value', sesskey = '$key'";
$qid = mysql_query($qry, $SESS_DBH);
}
return $qid;
}
function sess_destroy($key)
{
global $SESS_DBH;
$qry = "DELETE FROM ucnovel_session WHERE sesskey = '$key'";
$qid = mysql_query($qry, $SESS_DBH);
return $qid;
}
function sess_gc($maxlifetime)
{
global $SESS_DBH;
$qry = "DELETE FROM ucnovel_session WHERE expiry < " . time();
$qid = mysql_query($qry, $SESS_DBH);
return mysql_affected_rows($SESS_DBH);
}
session_set_save_handler("sess_open", "sess_close", "sess_read", "sess_write", "sess_destroy", "sess_gc");
session_set_cookie_params(0, "/", "ucnovel.com", false, false);
session_start();
?>
会话测试.php
<?
include "sessioninit.php";
$old = $_COOKIE[test_sess2];
$new = rand()%10000;
$_COOKIE[test_sess2] = $new;
setcookie("test_sess2", $new);
echo "OLD ".$old."<br>"."NEW ".$new;
$old = $_SESSION[test_sess];
$new = rand()%10000;
$_SESSION[test_sess] = $new;
$_SESSION[test_ip] = $REMOTE_ADDR;
echo "<br><br>OLD ".$old."<br>"."NEW ".$new;
?>
我知道他们会覆盖会话处理程序并对其进行自定义。但我找不到任何关于如何在 Java 中做到这一点的参考资料。
有人说覆盖 HttpSession 是一种方式。但我仍然无法理解如何做到这一点。另外,我不知道 DTO 是否会保存在数据库中:S
我现在用的是Spring 3.1,服务器是MySQL 5.5
有没有我能理解如何做的样本?或者也许是一个可以帮助它的插件?