I am looking for a way to map my Linux server environment variables to my keys in the application properties file.

spring.mail.username={value} spring.mail.password={value} spring.mail.properties.mail.smtp.port={value}

{value} would come from system defined environment variables.

CodePudding user response：

OS environment variables are also taken into account by Spring Boot. You just need to name them accordingly (SPRING_MAIL_USERNAME for example). You can check more info on how Spring Boots reads external configuration at the reference documentation.

CodePudding user response：

You could get from two ways

Replacing properties var with environment var

If You set an enviromment var will override var on properties

Set on env

# we can override all properties var replacing  "." to "_"
SERVER_PORT=8009 

and set on .properties

# this will be overrided by SERVER_PORT var
server.port=8001 

Using vars on .properties

You can use environment vars on .properties with ${name_env_var}

server.port=${SERVER_PORT_ENV:default_value_if_env_not_found}