TYPO3中的realurl，重定向和缓存问题 [英] Issue with realurl, redirect and caching in TYPO3

问题描述

此错误在带有piBase扩展名和realurl 2.0.15的TYPO3 7.6.10中发生:

This error occures in TYPO3 7.6.10 with a piBase extension and realurl 2.0.15:

在此扩展程序中，我正在检查GET参数，例如一个国家.如果未提供此参数，我将重定向到同一页面，并将默认国家/地区作为参数:

In this extension, I'm checking for a GET parameter, e.g. a country. If this parameter is not provided, I redirect to the same page, with default country as parameter:

if(!$this->piVars['country']) {
  $this->piVars['country'] = 'germany';
  \TYPO3\CMS\Core\Utility\HttpUtility::redirect($this->pi_linkTP_keepPIvars_url(array(), true), \TYPO3\CMS\Core\Utility\HttpUtility::HTTP_STATUS_303);
}

这意味着访问者例如呼叫网址www.mypage.com/list/并重定向到www.mypage.com/list/germany/

That means, the visitor e.g. calls url www.mypage.com/list/ and is redirected to www.mypage.com/list/germany/

这可以正常工作，但是经过一段时间并且某些访问者进入页面后，重定向停止工作.在浏览器中打开www.mypage.com/list/时，将显示某个国家/地区的页面(不是默认的页面，例如国家/地区"france").这意味着，TYPO3在页面www.mypage.com/list/france/上创建了页面www.mypage.com/list/的缓存条目，但是对于该URL，由于重定向，因此永远不会创建缓存条目

This works fine, but after some time passes and some visitors were an the page, the redirect stopped working. When opening www.mypage.com/list/ in the browser, the page is displayed for some country (not the default one, e.g. for country "france"). That means, TYPO3 creates on page www.mypage.com/list/france/ a cache entry for page www.mypage.com/list/, but for this url, a cache entry should've never been created, because of the redirect.

我可以通过将页面的缓存时间设置为1分钟来重现此错误.然后，我等待一分钟，然后加载网址www.mypage.com/list/france/.现在，当打开www.mypage.com/list/时，没有重定向，并且显示了法国.

I can reproduce this error by setting caching time of the page to 1 minute. Then I wait one minute, then loading the url www.mypage.com/list/france/. Now, when opening www.mypage.com/list/, there is no redirect and france is shown.

在禁用realurl时(或仅从realurl配置中删除参数"country")，不会发生此错误.

When disabling realurl (or just removing parameter "country" from realurl configuration), this error doesn't occur.

推荐答案

问题在这里描述: realurl生成没有cHash的条目

从2.0.15版本开始，realurl不会为链接计算cHash参数，链接可以直接访问，并且需要cHash参数来显示正确的缓存内容，例如记录的详细信息页面.

Since version 2.0.15, realurl doesn't calculate the cHash parameter for links, which are accessed directly and which need a cHash parameter to show the right cached contents, like detail pages of a record.

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