How to change to JSON stringify : Cannot decode: java.io.StringReader

[nomadie]

I have this Business Rule for Rest Message Patch method that I need to fix because I keep having this error.

HTTP Status : {"error":{"detail":"Cannot decode: java.io.StringReader@70dd85","message":"Exception while reading request"},"status":"failure"}

(function executeRule(current, previous /*null when async*/) {

	// Condition is : current.correlation_idISNOTEMPTY
	gs.log('In Business Rule New Run', 'check');
	try {
		var comment = current.comments.getJournalEntry(1);
		gs.log('Comment : ' + comment, 'check');
		gs.log('Cor ID : ' + current.correlation_id, 'check');
		var r = new sn_ws.RESTMessageV2('Ebond', 'Patch Ebond');
		r.setStringParameterNoEscape('sys_id', current.correlation_id);
		r.setStringParameterNoEscape('comments',comment);
				
		var response = r.execute();
		var responseBody = response.getBody();
		var httpStatus = response.getStatusCode();
		gs.log('HTTP Status : ' + responseBody,'check');
		
	}
	
	catch(ex) {
		var message = ex.message;
	}
	
	gs.log("End Business Rule", 'check');
	
})(current, previous);

[vkachineni]

That error message could be coming as a response from the API. May be an error occurred on the API side.

Can you test with Postman?

[nomadie]

how to do that? this is my first attempt in using rest. thanks

[Ankur Bawiskar]

Hi,

Can you check what request body is being sent out?

Have you defined the variable substitutions properly?

gs.info('Request Body is: ' + r.getRequestBody());

Mark ✅ Correct if this solves your issue and also mark 👍 Helpful if you find my response worthy based on the impact.
Thanks
Ankur

[DScroggins]

Hello,

That error is coming from your catch statement here:

catch(ex) {
	var message = ex.message;
}

I have found that simply using the following will work and will capture any errors when attempting to execute REST calls:

catch(ex) {
  var message = ex;
  gs.error('Unexpected error while executing REST message' + ex);
}

Also make sure that you have the correct REST parameter variables (sys_id & comments) defined like so:

See the following for more information on REST variable substitution: Variable substitution in outbound REST messages 

Hope this helps.

--David