大家好,我在安装perusio的nginx设定档遇到了问题,我将sites-available里面的,example.com启用以后,用浏览器连结只会连到welcome to nginx 无法连结到设定的路径,请问要怎么解决这个问题,謝謝大家

server {
    ## This is to avoid the spurious if for sub-domain name
    ## "rewriting".
    listen 80; # IPv4
    ## Replace the IPv6 address by your own address. The address below
    ## was stolen from the wikipedia page on IPv6.
    ##listen [fe80::202:b3ff:fe1e:8329]:80 ipv6only=on;
    server_name www.hifi.b.tw;
    return 301 $scheme://example.com$request_uri;

} # server domain return.

## HTTP server.
server {
    listen 80; # IPv4
    ## Replace the IPv6 address by your own address. The address below
    ## was stolen from the wikipedia page on IPv6.
    ##listen [fe80::202:b3ff:fe1e:8330]:80 ipv6only=on;

    server_name hifi.b.tw;
    limit_conn arbeit 32;

    ## Access and error logs.
    access_log /var/log/nginx/hifi.b.tw_access.log;
    error_log /var/log/nginx/hifi.b.tw_error.log;

    ## See the blacklist.conf file at the parent dir: /etc/nginx.
    ## Deny access based on the User-Agent header.
    if ($bad_bot) {
        return 444;
    }
    ## Deny access based on the Referer header.

if ($bad_referer) {
        return 444;
    }

    ## Protection against illegal HTTP methods. Out of the box only HEAD,
    ## GET and POST are allowed.
    if ($not_allowed_method) {
        return 405;
    }

    ## Filesystem root of the site and index.
    root /var/www/hifi.b.tw/;
    index index.php;

    ## If you're using a Nginx version greater or equal to 1.1.4 then
    ## you can use keep alive connections to the upstream be it
    ## FastCGI or Apache. If that's not the case comment out the line below.
    fastcgi_keep_conn on; # keep alive to the FCGI upstream