How to Enable CORS for an AWS API Gateway Resource

Question

I created REST API using AWS API Gateway & AWS Lambda and when I configured CORS I faced with such issue - I was able to configure CORS response headers for OPTIONS meth

Answer 1

Since you're using Lambda Proxy integration for your method, you'll need to:

(1) provide the Access-Control-Allow-Origin header as part of the Lambda response. For example:

callback(null, {
    statusCode: 200,
    headers: {"Content-Type": "application/json", "Access-Control-Allow-Origin": "*"},
    body: JSON.stringify({message: "Success"})
});

(2) and add the Access-Control-Allow-Origin as a 200 response header in your Method Response config.