Spring Boot 2.x doesn't scan application.properties when I specify spring.config.location

Toan Dao :

So I just playing around with Spring Boot 2.0.4 and I notice this today. Not sure that I missed something or not. Please help me to check.

Spring Application

@SpringBootApplication
@EnableScheduling
public class Application extends SpringBootServletInitializer {

application.properties (located in src/main/resources)

server.port=8088

start the project using Intellij

2018-08-17 12:11:05 INFO  o.s.b.w.e.tomcat.TomcatWebServer - Tomcat started on port(s): 8088 (http) with context path ''

start the project using java command line:

java -jar sample.jar --spring.config.location=D:\config\ --spring.profiles.active=dev

The application is not using the configured port

2018-08-17 11:25:25 INFO  o.s.b.w.e.tomcat.TomcatWebServer - Tomcat started on port(s): 8080 (http) with context path ''

It's look like Spring Boot 2.0 ignored the default properties file (note: this configuration only in applications.properties no where else, so it won't be overlapped by another configuration files)

davidxxx :

You specify spring.config.location to start the uber-jar and from Spring Boot 2, specifying this argument replaces the default locations used by Spring as stated in the documentation.

When custom config locations are configured by using spring.config.location, they replace the default locations. For example, if spring.config.location is configured with the value classpath:/custom-config/,file:./custom-config/, the search order becomes the following:

1. file:./custom-config/

2. classpath:custom-config/

So I think that you have to explicitly add the application.properties in spring.config.location :

--spring.config.location=D:\config\,classpath:\application.properties

Or as alternative use spring.config.additional-location such as --spring.config.additional-location=D:\config\ instead of spring.config.location that will add rather than replace locations as stated by the documentation :

Alternatively, when custom config locations are configured by using spring.config.additional-location, they are used in addition to the default locations.