Node js - send grid issue on sending basic email

问题

Node js - send grid issue on sending basic email

I've setup my node js server and need help with the setup.

Error "cant set headers"

This is my code:

  var express = require('express');
  var router = express.Router();
  var sendgrid = require('sendgrid')('IHaveAKey');

  router.get('/', function(req, res) {
    res.sendStatus(200);
  });

  router.get('/welcomeEmail/:email/:name', function(req, res) {
    var subject = 'Hello' + req.params.name;

    sendgrid.send({
      to:       'test@hotmail.co.uk',
      from:     'noreply@test.com',
      subject:  'Test',
      text:     'Welcome'
    }, function(err, json) {
      if (err) { return res.send("Error");}    
      return res.send("Sent");
    });

    res.sendStatus(200);
  });

  module.exports = router;

This is my error:

回答1:

You are triying to send response from server 2 times:

1) res.sendStatus(200);

2) res.send("Sent");

Leave one of this line and everything start to be ok

来源：https://stackoverflow.com/questions/34788083/node-js-send-grid-issue-on-sending-basic-email