fetch data from different localhost in Angular

Question

in Angular, ng serve --port 4200 --host 0.0.0.0 creates an instance of http server. I\'ve been told, that in order to fetch data from server side scripts in Ang

Answer 1

If you have Tow loalhost application, first is Angular app and is running in http://localhost:4200 and another is API project and running in http://localhost:3000, In this situation if from your angular app make request to another, you get CORS error, for solving this problem you can use below instructions step by step:

1. Make a file and name it proxy.config.json inside main folder of Angular project like below image:

2. Then put codes inside created file like this (please notice to target part):

   {
       "/api/*": {
           "target": "http://localhost:3000",
           "secure": false,
           "logLevel": "debug"
       }
   }
   

3. Then Change package.josn file and insert code like below image"

4. And after all you must use npm start to running anglar project

Note: If you don't do it for angular project, you will occure with CORS problem.

Answer 2

You can proxy your application on http://localhost by creating a file called proxy.conf.json in your angular project with the following content:

{
  "/api": {
    "target": "http://localhost",
    "secure": false
  }
}

and then starting ng serve with the additional parameter --proxy-config proxy.conf.json

ng serve --port 4200 --host 0.0.0.0 --proxy-config proxy.conf.json

You have to change your call then to include the port and /api prefix:

this.http.get('http://localhost:4200/api/echo.php').subscribe(data => {
...

You can find more details here