Setting active profile and config location from co

问题:

I have a spring boot application.

I have three profiles in my application-> development, staging and production. So I have 3 files

1. application-development.yml
2. application-staging.yml
3. application-production.yml

My application.yml resides inside src/main/resources. I have set the active profile in application.yml as :

spring:
  profiles.active: development

The other 3 profile specific config files are present in C:\config folder.

I am using gradle plugin for eclipse. When I try to do a "bootRun", I am setting the command line arguments in my gradle configuration in eclipse as

 -Dspring.profiles.active=staging -Dspring.config.location=C:\Config

However, the command line property is not getting reflected and my active profile is always getting set as development(which is the one that I have mentioned in the applications.yml file). Also C:\Config folder is not searched for profile specific config files.

I think I am missing something here. I have been trying to figure it out for the past 2 days. But no luck. I would really appreciate any help.

回答1:

There are two different ways you can add/override spring properties on the command line.

Option 1: Java System Properties (VM Arguments)

It's important that the -D parameters are before your application.jar otherwise they are not recognized.

java -jar -Dspring.profiles.active=prod application.jar

Option 2: Program arguments

java -jar application.jar --spring.profiles.active=prod --spring.config.location=c:\config

回答2:

I had to add this:

bootRun {
    String activeProfile =  System.properties['spring.profiles.active']
    String confLoc = System.properties['spring.config.location']
    systemProperty "spring.profiles.active", activeProfile
    systemProperty "spring.config.location", "file:$confLoc"
}

And now bootRun picks up the profile and config locations.

Thanks a lot @jst for the pointer.

回答3:

-Dspring.profiles.active=staging -Dspring.config.location=C:\Config

is not correct.

should be:

--spring.profiles.active=staging --spring.config.location=C:\Config

回答4:

you can use the following command line:

java -jar -Dspring.profiles.active=[yourProfileName] target/[yourJar].jar

回答5:

There's another way by setting the OS variable, SPRING_PROFILES_ACTIVE.

for eg :

SPRING_PROFILES_ACTIVE=dev gradle clean bootRun

Reference : How to set active Spring profiles

回答6:

When setting the profile via the Maven plugin you must do it via run.jvmArguments

mvn spring-boot:run -Drun.jvmArguments="-Dspring.profiles.active=production"

With debug option:

mvn spring-boot:run -Drun.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005 -Dspring.profiles.active=jpa"

I've seen this trip a lot of people up..hope it helps

回答7:

I think your problem is likely related to your spring.config.location not ending the path with "/".

Quote the docs

If spring.config.location contains directories (as opposed to files) they should end in / (and will be appended with the names generated from spring.config.name before being loaded).

http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config-application-property-files

回答8:

Michael Yin's answer is correct but a better explanation seems to be required!

A lot of you mentioned that -D is the correct way to specify JVM parameters and you are absolutely right. But Michael is also right as mentioned in Spring Boot Profiles documentation.

What is not clear in the documentation, is what kind of parameter it is: --spring.profiles.active is a not a standard JVM parameter so if you want to use it in your IDE fill the correct fields (i.e. program arguments)