通过nginx代理后getRequestURL无法获取

引发此问题的根源，nginx配置文件中缺少如下配置：

proxy_set_header?? Host???????????? $host;
???????????? proxy_set_header?? X-Real-IP??????? $remote_addr;
???????????? proxy_set_header?? X-Forwarded-For? $proxy_add_x_forwarded_for;
???????????? proxy_pass http://127.0.0.1:8068;