Nginx 配置 Rewrite：高效处理 URL 重写与重定向
Nginx 是一款高性能的 HTTP 和反向代理服务器，它以其轻量级、稳定性高、配置灵活等特点被广泛应用于各种场景，在 Nginx 的配置中，Rewrite 功能是实现 URL 重写和重定向的重要手段，可以帮助我们优化网站结构、提高用户体验，本文将详细介绍 Nginx 配置 Rewrite 的方法和技巧。
Rewrite 基础概念
-
Rewrite 规则
Rewrite 规则是指 Nginx 服务器在处理请求时，根据一定的规则对请求的 URL 进行修改，从而实现 URL 重写或重定向。 -
Rewrite 模块
Nginx 的 Rewrite 模块是处理 Rewrite 规则的核心模块，它负责解析和执行 Rewrite 规则。
Rewrite 配置步骤
开启 Rewrite 模块
在 Nginx 的配置文件中，首先需要开启 Rewrite 模块,具体操作如下：
http {
...
server {
...
location / {
...
if (!-e $request_filename) {
rewrite ^/(.*)$ /index.php?$query_string last;
}
}
}
}
编写 Rewrite 规则
在 location 块中，我们可以编写 Rewrite 规则，以下是一个简单的 Rewrite 规则示例：
location /old/ {
rewrite ^/old/(.*)$ /new/$1 permanent;
}
这个规则将所有以 /old/ 开头的 URL 重定向到 /new/ 目录下，保持 URL 后缀不变。
使用 RewriteCond 和 RewriteRule
RewriteCond 用于判断是否执行 RewriteRule，RewriteRule 用于定义具体的重写规则，以下是一个结合 RewriteCond 和 RewriteRule 的示例：
location /old/ {
rewritecond $request_uri ~ /old/
rewritecond $request_uri !~ /old/(index|login)/
rewritecond $request_uri !~ /old/
rewritecond $request_uri !~ ^/old$
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