HttpRequest Class Office 365

gistfile1.txt

HttpRequest req = new HttpRequest();
Http http = new Http();
//req.setheader('accept','application/json');
//https://tonyren-my.sharepoint.com/_api/v1.0/me/files/016EQYPSSQZ3I757WQYVALBAADZKWLQDTI/children?expand=thumbnails
req.setEndpoint('callout:Office365NamedCredential2/drive/root'); //me/drive/root/children'
req.setheader('accept','application/json');
req.setHeader('Authorization', 'Bearer {!$Credential.OAuthToken}');
//req.setHeader('Content-Type', 'application/json');
req.setMethod('GET');



try {
   
    
    HttpResponse response = http.send(req);
    
    
    
    if ( response.getStatusCode() != 200 ) {
        System.debug('Error response: ' + response.getBody());
    } else {
        System.debug('Successful response: ' + response.getBody());
         
     
    }
    
}
catch( exception ex){
    system.debug('Exception caught: ' + ex.getMessage());
}