小编Nev*_*lax的帖子

所以我正在使用express.js并考虑使用async/await与节点7.有没有办法我仍然可以捕获错误但摆脱try/catch块？也许是函数包装器？我不确定这将如何实际执行函数的代码并调用next(err).

exports.index = async function(req, res, next) {
  try {
    let user = await User.findOne().exec();

    res.status(200).json(user);
  } catch(err) {
    next(err);
  }
}

像这样......？

function example() {
   // Implements try/catch block and then handles error.
}

exports.index = async example(req, res, next) {
  let user = await User.findOne().exec();
  res.status(200).json(user);
}

编辑:

更类似的东西:

var wrapper = function(f) {
    return function() {
        try {
            f.apply(this, arguments);
        } catch(e) {
            customErrorHandler(e)
        }
    }
}

这会以某种方式处理try/catch块但不起作用:

exports.index = wrapper(async example(req, res, next) { …

我正在尝试全局阻止空用户代理访问服务器上的站点.我添加了一个http_user_agent拒绝,但它根本不起作用.我这样做了吗？这是我的nginx.conf:

#user  nginx;
worker_processes  1;

#error_log  /var/log/nginx/error.log;
#error_log  /var/log/nginx/error.log  notice;
#error_log  /var/log/nginx/error.log  info;

#pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;
    #tcp_nodelay        on;

    # enable gzip compression
    gzip on;
    gzip_min_length  1100;
    gzip_buffers  4 32k;
    gzip_types    text/plain application/x-javascript text/xml text/css;
    gzip_vary on;
    # end gzip configuration

    server_tokens off;

    server …