Hi, I have an spring boot application for which i am using signoz as monitoring tool. I have used docker standalone version of signoz. so used opentelemetry-javaagent with spring boot application. My question is that how can i add these span-id and trace-id in my logs

You don't need to manually do any work. Please see https://signoz.io/docs/userguide/collecting_application_logs_otel_sdk_java/