Question

I developed an application based on MEAN stack and it works fine when UI and api on same domain-port. however , when I segregate UI and api and let say deploying on different domain or even local with different port ,all api call successful but no response data. FYI I have Access-Control-Allow-Origin * and without that also behaviour is same.

Answer 1

如果在Cross origin浏览器的情况下，首先发送选项请求。如果响应OPTION请求，如果发现 access-control-allow-origin ，则会发送实际请求，否则会产生CROS错误。

您可以在nodeJS代码的app.js中添加这些行。这将解决您的目的。

app.use(function(req, res, next) {
  res.setHeader('access-control-allow-headers', 'Origin, X-Requested-With, Content-Type, Accept');
  res.setHeader('access-control-allow-methods', 'POST,HEAD,GET,PUT,DELETE,OPTIONS');
  res.setHeader('access-control-allow-origin', '*');
  next();
});

app.options('*', function(req, res, next) {
  res.send();
});

NodeJS , AngularJS not getting response when on different domain, getting success but without response data

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