PHP(FastCGI)在Nginx的alias下出现404错误的解决方法

location / {
root /opt/www/htdocs/www;
index index.php index.html index.htm;
}
location /bbs/ {
alias /opt/www/htdocs/bbs/;
index index.php index.html index.htm;
}
location ~ ^/bbs/.+.php{
root /opt/www/htdocs;
rewrite /bbs/(.*.php?) /1 break;
include conf/fcgi.conf;
fastcgi_pass 127.0.0.1:10080;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /opt/www/htdocs/bbs$fastcgi_script_name;
}