请教一个关于nginx的问题。

我的本地环境是apache，云服务器的环境是nginx.
为是提高网站性能，减少请求和节省宽带，我本地的apache环境下的程序都会将js和图片以及css等缓存到客户端，apache只需要在..htaccess文件中写入以下代码就可以实现：
<FilesMatch “.(gif|jpg|jpeg|png|ico|swf|js|css)$”>
Header set Cache-Control “max-age=2592000″
</FilesMatch>

但我的服务器环境是nginx,按网上的教程，实现这个功能的配置是：
        location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
            expires      30d;
        }
        location ~ .*\.(js|css)?$ {
            expires      30d;
        }

但是，我这样配置nginx后，网站出错了，所有js/css都加载不来，图片显示不出来，更不用说缓存到本地了，请问一下要怎么解决这个问题？
我的nginx.conf如下：


user  www www;
worker_processes  1;
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
pid        logs/nginx.pid;

events {
    worker_connections  10240;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';
    #access_log  logs/access.log  main;
    sendfile        on;
    #tcp_nopush     on;
    #keepalive_timeout  0;
    keepalive_timeout  65;
    gzip  on;
    server {
        listen       80;
        server_name   www.77time.com;
        #charset koi8-r;
        #access_log  logs/host.access.log  main;
        location / {
            root   /mnt/wwwroot/dianying;
            rewrite ^(.*)movie(.*)\.html$ $1movie.php?id=$2 last;
            index index.php index.html index.htm;
        }
        #error_page  404              /404.html;
        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /mnt/wwwroot/dianying;
        }
        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /mnt/wwwroot/dianying$fastcgi_script_name;
            include        fastcgi_params;
        }
        location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
            expires      30d;
        }
        location ~ .*\.(js|css)?$ {
            expires      30d;
        }
        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }
    server {
        server_name 77time.com;
rewrite ^(.*) http://www.77time.com$1 permanent;
    }
}


请懂的人帮忙看看。