Java Spring application.propperties environment variables or default

Question

I'm trying to make a complete development to the production pipeline.

In this scenario, I want to have a Jenkins job deploy the Java Spring application once a new commit is done.

An example of some of my applications.propperties is:

spring.datasource.url=jdbc:mariadb://localhost:3306/application-api?serverTimezone=CET
spring.datasource.username=USERNAME
spring.datasource.password=PASSWORD

Once you have this in a git repository your credentials are stored and visual for everyone. I don't have the plan to make anything public yet but seems like a bad idea to store application.properties with passwords on a git repository.

So best case scenario I want something like this, where I can set environment vars on my deployment server: spring.datasource.username=${DB_PASS}:PASSWORD In case of environment variable DB_PASS doesn't exist

I'm stuck on how to achieve this. I have seen the usage of @Value but I'm unaware of how to use that with given application properties.

Does this answer your question? [Using env variable in Spring Boot's application.properties](https://stackoverflow.com/questions/35531661/using-env-variable-in-spring-boots-application-properties) — 0xh3xa, Mar 22 '20 at 15:44

score 3 · Answer 1 · answered Mar 22 '20 at 15:36

3

You can use all properties also as environment variables.

Simply make the name uppercase and replace . by _

SPRING_DATASOURCE_URL=jdbc:mariadb://localhost:3306/application-api?serverTimezone=CET
SPRING_DATASOURCE_USERNAME=USERNAME
SPRING_DATASOURCE_PASSWORD=PASSWORD

Please read the documentation: https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config

answered Mar 22 '20 at 15:36

Simon Martinelli

34,053
5
48
82

the link helped me to discover the profile properties usage. but this still keeps the problem to replacing on repo's – JasperFennet Mar 23 '20 at 11:21

Fermi-4 · Answer 2 · 2020-03-24T18:25:34.417

0

Why are you storing the github credentials in application.properties?

Consider connecting Jenkins to github via Webhooks:

Here is the plugin for Jenkins

Here is a tutorial on setting up and using Github webhooks with Jenkins

EDIT 3/24/2020: You can consider having a properties file that is external to the project and add it to the classpath (simply don't commit it) using something like @PropertySource. Further, once you build your project, you can place a properties file in the same directory and it will be picked up by default when you start your spring boot application.

Example:

C:<path to project>/target/project.jar

C:<path to project>/target/custom-properties.properties

then

custom-properties.properties

will be loaded on start up.

edited Mar 24 '20 at 18:25

answered Mar 23 '20 at 01:06

Fermi-4

645
6
10

im not storing credentials for github, but for example a database, an API key or any other secret. Once i commit the application.properties this will be saved in plain text – JasperFennet Mar 23 '20 at 11:20
And why do you keep it in application.properties? – Simon Martinelli Mar 23 '20 at 11:46
@Simon what is the alternative, other than system/environment variables – JasperFennet Mar 23 '20 at 14:57
Did you read the docs https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config – Simon Martinelli Mar 23 '20 at 14:58

Java Spring application.propperties environment variables or default

2 Answers2