How to set Spring profile from system variable

Question

I have a Spring project which uses another project  Each project has its own spring profile initialize from java code using applicationContext xml and   properties for each profile  I inject the profile from args    The problem is that second project uses the default configuration for the env from the applicationContext xml I can not inject the env from args   to the second project and I tried looking for an article which will explain how Spring profile works    Is there a hierarchy on which it will look the profile when default is not configured at applicationContext xml   Is System var stronger than applicationContext xml configuration  What you think is the best solution to my challenge    Articles on that subject or even examples would be most appreciated    Thanks in advance

User · Answer

If you are using docker to deploy the spring boot app  you can set the profile using the flag e      docker run -e  SPRING PROFILES ACTIVE prod  -p 8080 8080 -t   r test co myapp latest

User · Answer

SPRING PROFILES ACTIVE is the environment variable to override pick Spring profile

User · Answer

You can set the spring profile by supplying -Dspring profiles active  lt env gt   For java files in source src  directory  you can use by  System getProperty  spring profiles active     For java files in test directory you can supply    SPRING PROFILES ACTIVE to  lt env gt    OR   Since   environment    jvmArgs  and  systemProperties  are ignored for the  test  task  In root build gradle add a task to set jvm property and environment variable     test       def profile   System properties  spring profiles active       systemProperty  spring profiles active  profile     environment  SPRING PROFILES ACTIVE   profile     println  Running   project  tests with profile    profile

User · Answer

I normally configure the applicationContext using Annotation based configuration rather than XML based configuration  Anyway  I believe both of them have the same priority    Answering your question  system variable has higher priority      Getting profile based beans from applicationContext   Use  Profile on a Bean    Component  Profile  dev   public class DatasourceConfigForDev   Now  the profile is dev  Note   if the Profile is given as          Profile   dev   then the profile will exclude dev and be for all others    Use profiles attribute in XML    lt beans profile  dev  gt       lt bean id  DatasourceConfigForDev  class  org skoolguy profiles DatasourceConfigForDev   gt   lt  beans gt      Set the value for profile    Programmatically via WebApplicationInitializer interface  In web applications  WebApplicationInitializer can be used to configure the ServletContext programmatically    Configuration public class MyWebApplicationInitializer implements WebApplicationInitializer         Override     public void onStartup ServletContext servletContext  throws ServletException               servletContext setInitParameter  spring profiles active    dev               Programmatically via ConfigurableEnvironment  You can also set profiles directly on the environment         Autowired     private ConfigurableEnvironment env                   env setActiveProfiles  dev       Context Parameter in web xml  profiles can be activated in the web xml of the web application as well  using a context parameter         lt context-param gt           lt param-name gt contextConfigLocation lt  param-name gt           lt param-value gt  WEB-INF app-config xml lt  param-value gt       lt  context-param gt       lt context-param gt           lt param-name gt spring profiles active lt  param-name gt           lt param-value gt dev lt  param-value gt       lt  context-param gt     JVM System Parameter  The profile names passed as the parameter will be activated during application start-up   -Dspring profiles active dev   In IDEs  you can set the environment variables and values to use when an application runs  The following is the Run Configuration in Eclipse       Environment Variable  to set via command line   export spring profiles active dev      Any bean that does not specify a profile belongs to    default    profile      The priority order is     Context parameter in web xml  WebApplicationInitializer  JVM System parameter  Environment variable

User · Answer

My solution is to set the environment variable as spring profiles active development  So that all applications running in that machine will refer the variable and start the application  The order in which spring loads a properties as follows  application properties system properties environment variable

User · Answer

If you provide your JVM the Spring profile there should be no problems   java -Dspring profiles active development -jar yourApplication jar    Also see Spring-Documentation   http   docs spring io spring-boot docs current reference html howto-properties-and-configuration html     69 5 Set the active Spring profiles      The Spring Environment has an API for this  but normally you would set   a System property  spring profiles active  or an OS environment   variable  SPRING PROFILES ACTIVE   E g  launch your application with a   -D argument  remember to put it before the main class or jar archive          java -jar -Dspring profiles active production   demo-0 0 1-SNAPSHOT jar      In Spring Boot you can also set the active profile in   application properties  e g       spring profiles active production      A value set this way is replaced by the System property or environment   variable setting  but not by the SpringApplicationBuilder profiles     method  Thus the latter Java API can be used to augment the profiles   without changing the defaults       See Chapter 25  Profiles in the    Spring Boot features    section for   more information

User · Answer

If i run the command line   java -Dspring profiles active development -jar yourApplication jar  from my webapplication directory it states that the path is incorrect  So i just defined the profile in manualy in the application properties file like this     spring profiles active mysql    or   spring profiles active postgres   or   spring profiles active mongodb

[java] How to set Spring profile from system variable?

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