单点在此.htaccess RewriteRule中有什么作用? [英] What does the single dot do in this .htaccess RewriteRule?

问题描述

使用Wordpress作为CMS，.htaccess文件如下所示:

Using Wordpress as a CMS, the .htaccess file looks like this:

RewriteEngine On                      # 1. ok - enables engine
RewriteBase /blog/                    # 2. ?? - sets blog directory as base for the rules
RewriteRule ^index\.php$ - [L]        # 3. ?? - replaces index.php by nothing in the URL
RewriteCond %{REQUEST_FILENAME} !-f   # 4. ?? - checks if request contains a file name
RewriteCond %{REQUEST_FILENAME} !-d   # 5. ?? - checks if request contains a directory name
RewriteRule . /blog/index.php [L]     # 6. ?? --> why this single dot (1 occurrence of a single character)?

我阅读了有关mod_rewrite的大量文档(并且仍在阅读中)，我知道什么是regex以及它们如何工作，并且我的网站工作得非常好.但是我正在复制粘贴内容，不确定是否会理解.行??是我不确定的(我完全不了解第6行的功能).

I read extensive documentation (and still am reading) about mod_rewrite, I know what regex are and how they work, and I got my site working perfectly fine. Yet I'm copying-pasting and not sure to be understanding. Lines with ?? are the ones I am not sure to understand (and I don't get what line 6 does at all).

在另一个基于 https://stackoverflow.com/a/20979005 的文件中(该文件在我的网站上有效):

In another file based on https://stackoverflow.com/a/20979005 (this worked for my site):

RewriteCond %{HTTP_HOST} ^(www\.)?domain\.com$           # 7. ok
RewriteRule !^subfolder/ /subfolder%{REQUEST_URI}  [L]   # 8. ?? - if it does not contain the subfolder, add it (strange as I wanted exactly to remove it from the URL but it works)

我的问题是:

1. 我的第1至5行正确吗?
2. 第6行到底做什么?
3. 第8行的解释正确吗?

推荐答案

以下是答案:

Q1.我得到第1至5行吗?

Q1. did I get lines 1 to 5 right?

A1.是的，你做到了

A1. yes you did

Q2.第6行到底是做什么的?

Q2. what exactly does line 6 do?

A2.它说，对于任何不为空的请求(单个DOT都将匹配除着陆页以外的任何内容)转发到/blog/index.php

A2. It says for any request that is not empty (single DOT will match anything except the landing page) forward to /blog/index.php

Q3.第8行的解释正确吗?

Q3. is line 8 explanation correct?

A3.是的，这是正确的.没有什么奇怪的.您要在客户端的URL中删除/subfolder/，但要在Web服务器收到不带subfolder/的请求时在内部/静默地添加subfolder/ ，以便您可以正确加载页面.

A3. Yes it is correct. There is nothing strange. You want to remove /subfolder/ in your URLs for your clients but want to add subfolder/ internally/silently when your web server receives a request without subfolder/ so that you can load the page correctly.

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