SpringApplicationJsonEnvironmentPostProcessor.java 文件源码

private String findPropertySource(MutablePropertySources sources) {
    if (ClassUtils.isPresent(SERVLET_ENVIRONMENT_CLASS, null) && sources
            .contains(StandardServletEnvironment.JNDI_PROPERTY_SOURCE_NAME)) {
        return StandardServletEnvironment.JNDI_PROPERTY_SOURCE_NAME;

    }
    return StandardEnvironment.SYSTEM_PROPERTIES_PROPERTY_SOURCE_NAME;
}