How to call REST api from NAV 2013

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Posted on by Krish Roy

Let's understand the scenario,

I have a xmlport and I have to use that in a code unit to call REST api and need to submit xml data as body content of the api and it will have few headers too.

But I am unable to post data in content as there is no Codeunit 1297 Http Web Request Mgt. in NAV 2013.

Unable to perform operations on Stream writer.

NAV is completely new for me, I am trying to learn it and improving myself day by day. But still thrs a lot to learn.

Is there any one who can help me with that?

(Please suggest me a better resource to learn NAV too if possible.)

Thank you !

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Stefano Demiliani 37,166 Most Valuable Professional on at

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RE: How to call REST api from NAV 2013

You can use DotNet variables by referencing classes in System.Net, like for example here:

[View:http://www.kauffmann.nl/2015/11/26/web-services-examples-part-1-the-basic-pattern/]

My suggestion is however to create an addin (C# dll) and here create methods for handling the WS communication. Much better and more powerful in many cases.

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Krish Roy 39 on at

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RE: How to call REST api from NAV 2013

Thanks a lot to respond on the same.

That is what I did at last moment , created a dll and using that in nav with input params.

But I was not ready to involve c# I was looking for something to use in NAV only.

Thank you !!

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ManishS 86 on at

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RE: How to call REST api from NAV 2013

Then in that case you need to upgrade you NAV version to lasted one, so you get the standard functionality.

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Krish Roy 39 on at

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RE: How to call REST api from NAV 2013

I am shocked.

Really? There is no way to do the same in NAV2013?

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Hannes Holst 5,767 on at

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RE: How to call REST api from NAV 2013

Check this Blog here: http://www.dynamics.is/?p=2303

The download contains a DLL called "NAVWebRequest.dll".

Should work with NAV2013. I think this DLL is explained in more detail somewhere on this blog.

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Krish Roy 39 on at

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RE: How to call REST api from NAV 2013

Thank you EveryOne.

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Krish Roy 39 on at

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RE: How to call REST api from NAV 2013

"Failure is the best Teacher "

Finally I have created a Code unit to call API from NAV without using Dot net dll.

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Community Member on at

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RE: How to call REST api from NAV 2013

Would be nice if you share it with us here for the next person..

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Alessandro Isola 5 on at

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RE: How to call REST api from NAV 2013

Hi Krish,

I have the same problem that You solved, please can You explain the way You followed to reach your goal?

Thank You in advance

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Krish Roy 39 on at

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RE: How to call REST api from NAV 2013

Hi,

In Navision 2013 there is no unbuilt codeunit to call API (http web management) you have to use dotnet variables and write it in the same way in Navision.

Here is the code.

VAR
HttpWebRequest@1000000001 : DotNet "'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Net.HttpWebRequest" RUNONCLIENT;
HttpWebResponse@1000000004 : DotNet "'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Net.HttpWebResponse" RUNONCLIENT;
HttpStatusCode@1000000005 : DotNet "'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Net.HttpStatusCode" RUNONCLIENT;
Stream@1000000014 : DotNet "'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.IO.Stream" RUNONCLIENT;
TextEncoding@1000000004 : DotNet "'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.Text.Encoding" RUNONCLIENT;
ResStreamReader@1000000010 : DotNet "'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.IO.StreamReader" RUNONCLIENT;
ResStream@1000000012 : DotNet "'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.IO.Stream" RUNONCLIENT;
Response@1000000015 : Text;
RequestData@1000000006 : Text;

HttpWebRequest:=HttpWebRequest.HttpWebRequest;
HttpWebRequest:=WebRequest.Create('http://API_URL');
HttpWebRequest.ContentType:='application/xml';
HttpWebRequest.Method:='POST';
Stream:=HttpWebRequest.GetRequestStream();
Stream.Write(TextEncoding.ASCII.GetBytes(RequestData),0,TextEncoding.ASCII.GetBytes(RequestData).Length);
Stream.Close();

HttpWebResponse:=HttpWebResponse.HttpWebResponse;
HttpWebResponse:=HttpWebRequest.GetResponse();
HttpResStatus:=HttpWebResponse.StatusCode();
CLEAR(Response);
IF HttpResStatus=200 THEN BEGIN
ResStream:=HttpWebResponse.GetResponseStream();
ResStreamReader:=ResStreamReader.StreamReader(ResStream,TextEncoding.Unicode);
Response:=ResStreamReader.ReadToEnd();
END ELSE BEGIN
ResStream:=HttpWebResponse.GetResponseStream();
ResStreamReader:=ResStreamReader.StreamReader(ResStream,TextEncoding.Unicode);
Response:=HttpWebResponse.StatusDescription;
END;

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