Creating a Remote Site Setting and Creating an API Callout #inSalesforce

Creating a Remote Site Setting and Creating an API Callout #inSalesforce

Setup | Remote Site Settings | New Remote Site | Enter the Remote Site Name (like Callout) and URL(like https://th-apex-http-callout.herokuapp.com/animals/) | Select Active | Save

Create a Class like:

Public class calloutGETClass{
    Public string getContent(String url){
        Http h = new Http();
        HttpRequest req = new HttpRequest();
        req.setEndpoint('https://th-apex-http-callout.herokuapp.com/animals/');
        req.setMethod('GET');
        HttpResponse res= h.send(req);
        return res.getBody();
        //system.debug('getResponse'+res.getBody());
    }
}

Test in Anonymous Window

Http h = new Http();
HttpRequest req = new HttpRequest();
req.setEndpoint('https://th-apex-http-callout.herokuapp.com');
req.setMethod('GET');
HttpResponse res= h.send(req);
//return res.getBody();
system.debug('getResponse'+res.getBody());

Check logs for the response

Visual: https://www.youtube.com/watch?v=Qr0avzLZC5w