How to get data from Nodejs to angular 6?

Question

I'm using http.get to get data from nodejs to angular. I want load some content on page loading. So, I'm just calling it in initialize method.

_initialize(): void {
this.http.get('http://127.0.0.1:3000/query/getId').subscribe(
  data => {
    console.log("success");
  },
  err => {
    console.log("Error occured."+JSON.stringify(err));
  }
);
}

In my server js,

app.get('/query/getId',function(req,res){
             console.log("hi there");

 })

I want to pass the data, but as of now the console message itself not displaying in node. And in browser I could see the message error occured. message":"Http failure during parsing for the url" . Can anybody tell me how to proceed with this?

Answer 1

You can specify that the data to be returned is not a JSON using the responseType. See the Requesting non JSON data

In your example, you should be able to use:

 this.http.post('http://127.0.0.1:3000/query/getId',{}, {responseType: 'text'})

Answer 2

Add on node function:

res.json("hi there");

Answer 3

Try the following which uses JSON data:

app.get('/query/getId',function(req,res){
    res.setHeader('Content-Type', 'application/json');
    res.send(JSON.stringify({ a: 1 }));
 });