Accessing AWS Lambda environment variables in Java code

Question

The AWS has introduced Environment variables for accessing in the Lambda function. I could not find any documentation which shows how to access the environment variables from the Lambda function using Java. Can anyone help me?

Answer 1

you can get them with:

System.getenv("NAME_OF_YOUR_ENV_VARIABLE")

Answer 2

If You are using Spring Core then PropertySourcesPlaceholderConfigurer class can be initialized as a part of Configuration and then @Value("${RESOURCE_URL}") annotation can be used to access environment variables.

@Bean
public static PropertySourcesPlaceholderConfigurer placeholderConfigurer() {
    return new PropertySourcesPlaceholderConfigurer();
}

@Value("${RESOURCE_URL}")
private String url;

Answer 3

I am using this -

System.getenv("VAR_NAME");

This works pretty well.