Getting blank response for $util methods in AWS API gateway-CodePudding

I am trying to generate a UUID for mocking purposes in the AWS API gateway.

#set($myValue = "$util.autoId()")
##Prints '5'
$myValue
{"abc" : "$myValue"}

Here is a snapshot of the integration response.

But I am getting a blank response for this code.

Same issue with all other $util functions.

How to generate random UUID without using lambda.

CodePudding user response：

It looks like you may be trying to use an option that is available for mappings with AppSync. $util.autoId is available there: https://docs.aws.amazon.com/appsync/latest/devguide/resolver-util-reference.html

But for API Gateway, the $util options are different: https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-mapping-template-reference.html#util-template-reference

So autoId isn't an available option, and none of the other API Gateway variables and functions look like they'll get you a UUID without it coming from the input somehow.

CodePudding user response：

I generated UUID from request-id

$context.requestId