SharePoint 2016: Get access token

Question

I need to invoke intranet SharePoint 2016 REST API's to retrieve items. My options are CSOM (or JSOM) or REST APIs. I plan to use REST API's which needs an access token. I've looked up documentation but nothing seems straightforward. Does anybody have suggestions on how I can get access token w/o asking user for credentials each time.

Answer 1

Hi @developer sp1 ,

Please do a Post Request to /_api/contextinfo to get SharePoint form digest token for authentication:

$.ajax
({
url: _spPageContextInfo.webAbsoluteUrl + "/_api/contextinfo",
type: "POST",
async: false,
headers: { "accept": "application/json;odata=verbose" },
success: function(data){
var FormDigestValue = data.d.GetContextWebInformation.FormDigestValue;
console.log(FormDigestValue);
},
error: function (xhr, status, error)
{
console.log("Failed");
}
});

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