Laravel Nginx出现404 Not Found错误

问题

刚刚开始用了几天Laravel，发现URL路由有点问题，http://localhost:8017/laravel能正常打开，不过http://localhost:8017/laravel/foo返回

404 Not Found

系统为Ubuntu 16.04，Laravel 5.4
routes/web.php

Route::get('/', function () {
    return view('welcome');    
});

// oedin
Route::get('foo', function () {
    return 'Hello World';
});

nginx配置文件：

server {
    listen 8017 default_server;
    listen [::]:8017 default_server;

    # SSL configuration
    #
    # listen 443 ssl default_server;
    # listen [::]:443 ssl default_server;
    #
    # Note: You should disable gzip for SSL traffic.
    # See: https://bugs.debian.org/773332
    #
    # Read up on ssl_ciphers to ensure a secure configuration.
    # See: https://bugs.debian.org/765782
    #
    # Self signed certs generated by the ssl-cert package
    # Don't use them in a production server!
    #
    # include snippets/snakeoil.conf;

    #root /var/www/html;
    root /home/oedin/webdev;

    # Add index.php to the list if you are using PHP
    index index.php index.html index.htm;

    server_name localhost;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        #try_files $uri /index.php =404;
        #fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/run/php/php7.0-fpm.sock;
        #fastcgi_index index.php;
        #fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        #include fastcgi_params;

    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    #location ~ /\.ht {
    #   deny all;
    #}
}