Application fails to start when an environment variable named SERVER is present

[vpateleeoc]

I have created a small "Hello word" kind of an application to integrate JAX-RS (Jersey) with Spring Boot 2.05M on Spring STS running 3.9.1 release. When I try to run as Spring Boot application, it immediately throws this error:

2017-11-06 17:25:22.335  WARN 8208 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tomcatServletWebServerFactory' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/ServletWebServerFactoryAutoConfiguration$EmbeddedTomcat.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'serverPropertiesWebServerFactoryCustomizer' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/ServletWebServerFactoryAutoConfiguration.class]: Unsatisfied dependency expressed through method 'serverPropertiesWebServerFactoryCustomizer' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'server-org.springframework.boot.autoconfigure.web.ServerProperties': Could not bind properties to 'ServerProperties': prefix=server, ignoreInvalidFields=false, ignoreUnknownFields=true; nested exception is org.springframework.boot.context.properties.bind.BindException: Failed to bind properties under 'server' to org.springframework.boot.autoconfigure.web.ServerProperties
2017-11-06 17:25:22.335  INFO 8208 --- [           main] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-11-06 17:25:22.335 ERROR 8208 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Binding to target [Bindable@1ddae9b5 type = org.springframework.boot.autoconfigure.web.ServerProperties, value = 'provided', annotations = array<Annotation>[[empty]]] failed:

    Property: server
    Value: FIELD01
    Origin: System Environment Property "SERVER"
    Reason: No converter found capable of converting from type [java.lang.String] to type [org.springframework.boot.autoconfigure.web.ServerProperties]

Action:

Update your application's configuration

[wilkinsona]

Your environment variable named SERVER is causing the problem. Can you remove it?

[vpateleeoc]

Thanks Andy for responding to my SOS. Unfortunately, this environment variable is implicitly set by the system at startup for the Novell and I do not have any flexibility to remove it. Is there any other solution to resolve this issue? From: Andy Wilkinson [mailto:[email protected]] Sent: Monday, November 06, 2017 5:47 PM To: spring-projects/spring-boot <[email protected]> Your environment variable named SERVER is causing the problem. Can you remove it? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#10945 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AGOhPgcfjtRkptjwaDh6_OTVktr-__eDks5sz4x5gaJpZM4QT-jR>.

[wilkinsona]

Is there any other solution to resolve this issue?

Unfortunately not, no. This is a bug in the binder in Spring Boot 2.0 which we'll have to fix.

[Bessonov]

Similar problem with Spring Boot 1.5.3.RELEASE and ignoreUnknownFields = false for @ConfigurationProperties.

[wilkinsona]

@Bessonov You shouldn't be binding any configuration properties of your own from the server.* namespace and Boot's ServerProperties is already configured to ignore unknown fields.

[Bessonov]

This happens with my own namespace and I can control passed environment variables. But I think that isn't always possible and ignoreUnknownFields = false is just to strong for environment variables.

[wilkinsona]

@Bessonov That sounds like a different problem to me. You may be interested in #3450 and #3427.

[chennaiyan]

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-02-19 13:23:16.716 ERROR 8268 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
any idea to solve this problem

[MahmoudAlzoghbi]

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-04-24 02:15:44.645 ERROR 10376 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Field storeRepo in com.swe.controllers.AdminController required a bean of type 'com.swe.repositories.StoreRepository' that could not be found.


Action:

Consider defining a bean of type 'com.swe.repositories.StoreRepository' in your configuration.

[snicoll]

@MahmoudAlzoghbi this error has nothing to do with the scope of this issue. Please ask questions on StackOverflow.