我写了一个脚本，配置了一个捕获门户，一切都很好。我遇到的问题是nginx正在将所有请求重定向到http://hotspot.localnet/index.php还重定向了所有对图像的请求。因此，index.php中的图像都不起作用。
有没有一种方法可以将png、pdf文件从重定向到index.php并显示出来？尝试了许多在互联网上找到的正则表达式示例，但没有成功。
nginx配置文件的源代码如下：https://github.com/tretos53/Captive-Portal/blob/master/default_nginx
这是具有上述配置的access.log：
192.168.137.1 - - [03/Dec/2018:19:53:16 +0000] "GET /index.php HTTP/1.1" 200 582 "-" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
192.168.137.1 - - [03/Dec/2018:19:53:16 +0000] "GET /images/1.jpg HTTP/1.1" 302 161 "http://hotspot.localnet/index.php" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
192.168.137.1 - - [03/Dec/2018:19:53:16 +0000] "GET /images/2.png HTTP/1.1" 302 161 "http://hotspot.localnet/index.php" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
192.168.137.1 - - [03/Dec/2018:19:53:16 +0000] "GET /images/3.png HTTP/1.1" 302 161 "http://hotspot.localnet/index.php" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
192.168.137.1 - - [03/Dec/2018:19:53:16 +0000] "GET /images/4.png HTTP/1.1" 302 161 "http://hotspot.localnet/index.php" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
192.168.137.1 - - [03/Dec/2018:19:53:16 +0000] "GET /images/5.png HTTP/1.1" 302 161 "http://hotspot.localnet/index.php" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
192.168.137.1 - - [03/Dec/2018:19:53:16 +0000] "GET /images/6.png HTTP/1.1" 302 161 "http://hotspot.localnet/index.php" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
将其添加到您的配置中：
location ~ .(?:pdf|png)$ {
try_files $uri =404;
}