spring.config.location在Spring Boot 2.0.0 M6上不起作用 [英] spring.config.location not working on spring boot 2.0.0 M6

问题描述

我要将自己的微服务之一迁移到Spring Boot 2.0.0.M6，在命令行上使用--spring.config.location=选项时出现错误.错误如下:

I'm migrating one of my micro-services to Spring Boot 2.0.0.M6 and I got and error while using the --spring.config.location= option on the command line. The error is the following:

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'property' in value "${property}"
at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:172) ~[spring-core-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:124) ~[spring-core-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:237) ~[spring-core-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:211) ~[spring-core-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:175) ~[spring-context-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:834) ~[spring-beans-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1081) ~[spring-beans-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1060) ~[spring-beans-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:578) ~[spring-beans-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91) ~[spring-beans-5.0.1.RELEASE.jar:5.0.1.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:367) ~[spring-beans-5.0.1.RELEASE.jar:5.0.1.RELEASE]
... 50 common frames omitted

如果我不使用自定义属性文件，那么一切都会按预期运行或使用RELEASE版本.我使用以下命令启动应用程序:

If I don't use the custom property file everything works as intended or use the RELEASE versions. I'm starting the application with the following command:

java -jar application.jar --spring.config.location=app.properties

我注意到，使用此选项时，Spring会完全替换项目中的默认application.properties，这与以前的Spring版本不同，后者仅会覆盖参数文件中的属性.这是一个错误吗?

I notice that when using this option Spring completely replaces the default application.properties from the project, unlike previous Spring versions which just overwrites the properties in the argument file. Is this a bug?

得到了团队的响应，显然这是预期的行为.现在尝试了解是否有一种方法可以使用旧版本的行为.

Got a response from the team, apparently this is intended behavior. Trying to know now if there is a way to use the old versions behavior.

推荐答案

如Spring团队所述，使用spring.config.location中的旧行为的正确方法是使用新的spring.config.additional-location

As stated by the Spring team the correct way to use the old behavior from the spring.config.location is to use the new spring.config.additional-location

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