Access/get query parameters in aws lambda function

Thanks for the update. I am able to access query params now.

I went through the doc using lambda-proxy. Can you please provide if you have any example for HTTP POST method using java for lambda-proxy?

I am using spring boot. After i deployed into aws lambda, i am getting aws gateway timeout error for 1st run, subsequent runs gives result within 30 mins. Is there a solution for this timeout issue?

Thanks,
Bhasky