传递POST数据时，jQuery在新选项卡中打开页面

Question

我有一个名为“list”的javascript变量。 我需要将其作为POST数据发送到另一个页面，并在新选项卡中打开该页面 （存在POST数据）。

这段代码：

jQuery.post('datadestination.php', list);

发送数据是正确的，但是当然它会在同一个标​​签页面中打开页面。

我看到使用隐形形式和类似问题的类似问题的一些解决方案，但我无法让它们工作。 有没有简单的解决方案？

Answer 1

这是Sergey的解决方案的实现。

<?php // this is save.php
    session_start();
    // DO NOT just copy from _POST to _SESSION,
    // as it could allow a malicious user to override security.
    // Use a disposable variable key, such as "data" here.
    // So even if someone passed _POST[isAdmin]=true, all that he would do
    // is populate _SESSION[data][isAuthenticated], which nobody reads,
    // not the all-important _SESSION[isAuthenticated] key.
    if (array_key_exists('data', $_POST)) {
        $_SESSION['data']             = $_POST['data'];
        $_SESSION['data.timestamp']   = time();
        // Let us let the client know what happened
        $msg = 'OK';
    } else {
        $msg = 'No data was supplied';
    }
    Header('Content-Type: application/json; charset=utf8');
    die(json_encode(array('status' => $msg)));
?>

在第一页：

$.post('save.php', { data: list }, function(response){
    if (!response.status) {
        alert("Error calling save");
        return;
    }
    if (response.status !== 'OK') {
        alert(response.status);
        return;
    }
    // We had a response and it was "OK". We're good.
    window.open('datadestination.php');
});

在datadestination.php中添加修复：

if (!array_key_exists('data', $_SESSION)) {
   die("Problems? Did you perchance attempt to reload the page and resubmit?"); 
   // For if he did, then yes, $_SESSION would have been cleared.

   // Same if he is operating on more than one window or browser tab.
}
// Do something to validate data. For example we can use data.timestamp
// to assure data isn't stale.
$age = time();
if (array_key_exists($ts = 'data.timestamp', $_SESSION)) {
    $age -= $_SESSION[$ts];
}
if ($age > 3600) {
    die("Data is more than one hour old. Did someone change server time?!?");
    // I actually had ${PFY} do that to me using NTP + --hctosys, once.
    // My own time zone is (most of the year) exactly one hour past GMT.
}

// This is safe (we move unsecurity-ward):
$_POST = $_SESSION['data'];
unset($_SESSION['data'], $_SESSION['data.timestamp']);
// keep things clean.

// From here on, the script behaves "as if" it got a _POST.

更新

您实际上可以合并 save.php和datadestination.php并使用可以在其他页面中回收的“保存存根” savepost.php ：

<?php
    session_start();

    // DO NOT just copy from _POST to _SESSION,
    // as it could allow a malicious user to override security.
    // Use a disposable variable key, such as "data" here.
    if (array_key_exists('data', $_POST)) {
        // Timestamp sent by AJAX
        if (array_key_exists('ts', $_POST)) {
            // TODO: verify ts, but beware of time zones!
            $_SESSION['data'] = $_POST['data'];
            Header("Content-Type: application/json;charset=UTF-8");
            die(json_encode(array('status' => 'OK')));
        }
        die("Error");
    }
    // This is safe (we move unsecurity-ward):
    $_POST = $_SESSION['data'];
    unset($_SESSION['data']); // keep things clean.
?>

现在你的电话变成了

$.post('datadestination.php', { data: list, ts: Date.now() }, function(){
    window.open('datadestination.php');
});

并在您添加的datadestination.php （或其他任何地方）

require 'savepost.php';

Answer 2

1）为什么不用jquery.post()函数传递该列表并将其保存在SESSION数组中;

2）然后使用window.open()函数打开一个带有相同文件/地址/ url的新选项卡;

3）从SESSION数组中检索已保存的数据;

似乎是一种简单明了的方式？

Answer 3

您可以使用target =“_ blank”属性发送表单。

<form action="datadestination.php" method="POST" target="_blank" id="myform">
  <input type="hidden" name="list" id="list-data"/>
  <input type="submit" value="Submit">
</form>

然后在JS中：

jQuery('#list-data').val(list);
jQuery('#myform').submit();