发送电子邮件后,Nodemailer非常慢

时间:2017-04-17 22:18:51

标签: node.js express cloud9-ide nodemailer cloud9

我在用户提交联系表单后使用nodemailer发送电子邮件,然后用户将转到感谢页面。我现在在cloud9上从事这个项目。这是我的代码:

var express                 = require("express"),
    bodyParse               = require("body-parser"),
    multer                  = require("multer"),
    nodemailer              = require("nodemailer");

var app = express();

app.use(bodyParse.urlencoded({extended: true}));

var smtpTransport = nodemailer.createTransport({
service: "Gmail",
auth: {
    type: "OAuth2",
    user: "xxxxx@gmail.com",
    clientId: "xxxxxx",
    clientSecret: "xxxxx",
    refreshToken: "xxxxx",
    accessToken: "xxxxx"
    }
});
app.post("/upload", function(req, res){
  var mailOptions = {
    from: "xxxx <xxxx@gmail.com", // sender address
    to: "xxxx@gmail.com", // list of receivers
    subject: "xxxx", // Subject line
    text: "xxxx",
    attachments: [
       {   // file on disk as an attachment
        filename: 'xxxx.txt',
        path: './uploads/' + req.body.filename // stream this file
      }
    ]
  };

 // send mail with defined transport object
 smtpTransport.sendMail(mailOptions, (error, info) => {
   if (error) {
       return console.log(error);
   }
   console.log('Message %s sent: %s', info.messageId, info.response);
   });
 })

电子邮件可以成功发送,我可以在提交表单后的几秒钟内看到它,但页面将一直保持加载,直到出现一些错误(我附上下面的错误消息)。在此期间,我将收到1或2个相同的电子邮件。

<html>
<head>
  <meta charset='utf-8'> 
  <title>Error 502 - Bad Gateway</title>
  <link rel="stylesheet" type="text/css" 
  href="https://cdn.c9.io/errors/style.css" />
  <style type="text/css">
  .error_content {
    background: rgba(255, 255, 255, 0.23);
    padding: 10px;
    width: 641px;
    margin: 25px 0;
    display: none;
  }

  #error-msg {
    display: block;
  }
  </style>
</head>
<body class="errorUnknown light">
  <div id="wrapper">
    <h1>Error 502 - Bad Gateway</h1>
    <div class="error_content" id="error-msg">
      <p>Please click <a href="javascript:location.reload(true)">here</a> to try again, if the issue persists please contact <a href="https://c9.io/support">support</a></p>
    </div>

    <a href="http://status.c9.io">Status Page</a> |
    <a href="https://c9.io/support">Support</a> |
    <a href="https://c9.io/dashboard.html">Dashboard</a> |
    <a href="https://c9.io">Home</a>
  </div>
</body>
</html>
QQQQQ:我该怎么做才能解决这个问题? QQQQQ:这是我的代码还是cloud9服务器的问题?

1 个答案:

答案 0 :(得分:2)

那是因为您从未在app.post()处理程序中向浏览器发送回复。因此,浏览器只是等待从您的服务器收到回复而它永远不会 - 最终超时。这完全是您的代码,与您的云提供商无关。

app.post()处理程序中,您需要某种响应内容,例如res.send(xxx),它会告诉浏览器帖子请求已完成。如果此POST来自ajax调用,那么您可以将您想要的任何响应发送回客户端Javascript。如果POST请求是浏览器中的表单提交,那么您需要发回一个浏览器将加载并显示给用户的HTML页面。