spring-boot - 使用 ConfigFileApplicationContextInitializer 不会解析 @Value 的默认值

Question

当我使用:

@ContextConfiguration(classes = { DmiVehicleRTExportConfig.class },
  initializers = ConfigFileApplicationContextInitializer.class)

我的集成测试因以下属性而失败:

${oauth2client.prematureTimeout:600}

没有得到 600 的默认值。

这是通过使用解决的: SpringApplicationConfiguration 但我想使用 ConfigFileApplicationContextInitializer.class 而不是 SpringApplicationConfiguration 。

谢谢。

Answer 1

我遇到过同样的问题。需要添加PropertySourcesPlaceholderConfigurer.class:

@ContextConfiguration(classes = { DmiVehicleRTExportConfig.class, 
                           PropertySourcesPlaceholderConfigurer.class },
initializers = ConfigFileApplicationContextInitializer.class)

Spring 团队刚刚添加了一条关于此的说明:

Using ConfigFileApplicationContextInitializer alone won’t provide support for @Value("${…​}") injection. Its only job is to ensure that application.properties files are loaded into Spring’s Environment. For @Value support you need to either additionally configure a PropertySourcesPlaceholderConfigurer or use @SpringBootTest where one will be auto-configured for you.