spring - 从 Spring Boot 配置中排除 Java 系统属性和环境变量

Question

关于SpringBoot的属性解析在这里解释:https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html

我想从机制中排除:

9.  Java System properties (System.getProperties()).
10. OS environment variables.

这可能吗？

谢谢

Answer 1

在实例化 Spring Boot 应用程序时，您可以提供自己的 StandardEnvironment 实现。

例如:

public static void main(String[] args) {
    SpringApplicationBuilder applicationBuilder = new SpringApplicationBuilder(Application.class)
            .environment(new StandardEnvironment(){
                @Override
                protected void customizePropertySources(MutablePropertySources propertySources) {
                    // do not add system or env properties to the set of property sources
                }
            });
    applicationBuilder.run(args);
}

或者:

public static void main(String[] args) {
    SpringApplicationBuilder applicationBuilder = new SpringApplicationBuilder(Application.class)
            .environment(new StandardEnvironment(){
                @Override
                public Map<String, Object> getSystemEnvironment() {
                    return new HashMap<>();
                }

                @Override
                public Map<String, Object> getSystemProperties() {
                    return new HashMap<>();
                }
            });
    applicationBuilder.run(args);
}

无论哪种方式，您都可以确保应用程序的属性不包含任何系统或环境属性。