如果您试图在其上本地托管的端口是组合的，则会发生这种情况

错误:监听EACCES:权限被拒绝3000; 我添加“PORT = 3000;”而“PORT = 3000”。 只需分号“;”给出错误

删除分号，项目成功运行

对我来说，问题是在没有关闭快速运行服务器的情况下退出节点应用程序。

查看这个参考链接:

Give Safe User Permission To Use Port 80 Remember, we do NOT want to run your applications as the root user, but there is a hitch: your safe user does not have permission to use the default HTTP port (80). You goal is to be able to publish a website that visitors can use by navigating to an easy to use URL like http://ip:port/ Unfortunately, unless you sign on as root, you’ll normally have to use a URL like http://ip:port - where port number > 1024. A lot of people get stuck here, but the solution is easy. There a few options but this is the one I like. Type the following commands: sudo apt-get install libcap2-bin sudo setcap cap_net_bind_service=+ep `readlink -f \`which node\`` Now, when you tell a Node application that you want it to run on port 80, it will not complain.

记住，如果你使用sudo绑定到端口80，并使用环境变量port和NODE_ENV，你必须重新导出这些变量，因为你现在在根配置文件下，而不是你的用户配置文件下。所以，为了让它在我的Mac上工作，我做了以下工作:

sudo su
export NODE_ENV=production
export PORT=80
docpad run

我在我的mac上得到了这个错误，因为它在默认情况下运行apache服务器使用的端口与节点服务器使用的端口相同，在我的情况下是端口80。我所要做的就是用sudo apachectl stop停止它

希望这能帮助到一些人。