在nginx配置的tomcat上上传文件/表单

我在我的Ubuntu 14.04.5 LTS上安装了nginx版本：nginx/1.4.6（Ubuntu）

我想通过nginx安装站点上的表单上传一个excel文件，但是运气不好。有人能帮我配置安装吗

我当前的nginx（/etc/nginx/sites available/default）配置：

server {

    # SSL configuration

    listen 443 ssl;
    listen [::]:443 ssl;
    include /etc/nginx/snippets/self-signed.conf;
   # include /etc/nginx/snippets/ssl-params.conf;

location / {
 root /var/lib/tomcat7/webapps/ROOT;

  index pbStartPage.jsp;

   }
location ~ /upload {
        limit_except POST             { deny all; }
        client_body_temp_path          /var/lib/tomcat7/webapps/ROOT/upload;
        client_body_in_file_only       on;
        client_body_buffer_size        128K;
        client_max_body_size           50M;
        proxy_pass_request_headers     on;
        proxy_set_header content-type "text/html";
        proxy_set_header               X-FILE $request_body_file;
        proxy_set_body                 $request_body_file;
        proxy_pass                     http://localhost:8088/;
        proxy_redirect                 off;

}

}

如果需要在配置中添加某些内容，请帮助我