Not able to connect from SAP Fiori to SAP CPI in SAP BAS

[Priyanka97]

Hi,

we have a requirement to get data in fiori application from CPI. We are going to deploy this app on On-Premise system.

while performing Ajax call I'm getting 401 error.

If I double-click on this link, I can can get the data in browser.

Following is my Ajax call in controller

I try adding this URL "https://cors-anywhere.herokuapp.com" with my CPI link but it's not working, here I get 401 Unauthorized error. and if I execute this link in browser I get "Missing required request header. Must specify one of: origin,x-requested-with

Also I add chrome extension for CORS, it is also not working.

Any help would be much appreciated.

Regards,

Priyanka

[gregorw]

Are you trying to directly connect to CPI from your UI5 application? How do you plan to authenticate there?

[Priyanka97]

Hi Gregor,

I'm using Ajax call with basic authentication.

as I'm deploying this app in on-premise system, xs-app.json file does not create in my application, so I'm not able to access CPI from BTP destination.

[Priyanka97]

Hi mauriciolauffer I came across you blog- https://blogs.sap.com/2019/01/07/cors-and-fioriui5-everything-you-need-to-know/

But the solution you have suggest is not working for me, could you please help.

Regards,

Priyanka

[gregorw]

Hi Priyanka,

and your users should then get a basic authentication pop-up when using the App? I would recommend to implement an endpoint in your on prem system that then calls the CPI endpoint and store the authentication data in SM59.

Best Regards
Gregor

[Priyanka97]

Hi Gregor,

I'm getting pop-up for basic authentication. I don't know how to pass credential, I have tried to pass it like this-

beforeSend: function(xhr) { xhr.setRequestHeader ("Authorization", "Basic " + base64Credentials); }but it's not working.could you please suggest.Regards,Priyanka

[gregorw]

If you would set the credentials on the client you would share them with everyone who can access the app. Please try to proxy through the application server.

[mauriciolauffer]

priyanka.punde , as stated in my blog, none of the options are for productive environments. You don't fix CORS issues in the frontend app as the "problem" happens on the backend response.

As you're calling an CPI endpoint, you must enable CORS on CPI itself. Follow the steps on this tutorial, it may help:

Configure SAP API Management policies to avoid CORS issues and generate an API Key