nginx配置文件nginx.conf如下：user root D:\network\Video; worker_processes 4; events { worker_connections 204800; } http { include mime.types; default_type application/octet-stream; sendfile on; tcp_nopush on; keepalive_timeout 65; tcp_nodelay on; gzip on; client_header_buffer_size 4k; server { listen 8000; server_name 127.0.0.1; add_header Access-Control-Allow-Origin *; add_header Access-Control-Allow-Headers X-Requested-With; add_header Access-Control-Allow-Methods GET,POST,OPTIONS; location / { root D:\network\Video; autoindex on; } } } 运行nginx -p . -c ./nginx.conf时出现: [warn] "user" is not supported, ignored in ./nginx.conf:1 nginx: [emerg] CreateFile() "./mime.types" failed (2: The system cannot find the file specified) in ./nginx.conf:9如何解决

首先，关于 "user" is not supported 的警告，这是因为在 Windows 平台上，nginx 不支持指定用户，所以可以将user root这一行注释掉。

其次，关于"./mime.types" failed的错误，这是因为nginx在启动的时候找不到mime.types文件，可以在http块中添加以下内容来指定mime.types文件的路径：

http {
    ...
    include mime.types;
    ...
}

指定mime.types文件的路径可以使用绝对路径或相对路径，如果使用相对路径，则相对于nginx.conf文件的路径。如果mime.types文件不存在，可以在nginx安装目录的conf目录下找到一个mime.types.default文件，将其复制一份并命名为mime.types即可。

经过以上修改后，nginx.conf文件应该如下：

#user root D:\network\Video;
worker_processes  4;

events {
    worker_connections 204800;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    tcp_nopush     on;
    keepalive_timeout  65;
    tcp_nodelay     on;
    gzip            on;
    client_header_buffer_size 4k;

    server {
        listen 8000;
        server_name 127.0.0.1;

        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Headers X-Requested-With;
        add_header Access-Control-Allow-Methods GET,POST,OPTIONS;

        location / {
            root D:\network\Video;
            autoindex on;
        }
    }
}