nginx+jetty 这样配置对吗？

在 ubuntu 下，nginx+jetty, 动态页面和静态页面分开，配置如下：

server {
        listen       80;
        server_name  localhost;

        # 静态页面目录
        root   /home/workspace/UI;
        index  index.html;

        location / {

        	    # 用户浏览器端的缓存设置
        	    location  ~.*\.(js|css|jpg|jpeg|gif|png|swf|htm|html|json|xml|svg|woff|ttf|eot|map|ico)${
            		expires 1h;
            		if(-f $request_filename){
            		    break;
            		}
        	    }

        	    # 动态页面，转到jetty
        	   if(!-e $request_filename){
        	       proxy_pass http://127.0.0.1:8080;
        	   }

        }
}

报错如下：

Error 404 - Not Found.

No context on this server matched or handled this request.
Contexts known to this server are:

• .....,.