springboot java应用程序类中的属性值加载

Question

我试图在java应用程序类中加载属性文件值，但它没有加载，因为Sysout正在打印null。 我的代码中缺少的任何内容。 启动Spring容器时，可以看到日志中加载的属性文件的值，如下所示：

015-12-24 22:36:08.313  INFO 22224 --- [           main] com.ge.predix.solsvc.boot.Application    : propertySource=applicationConfig: [file:./config/application.properties] values={logging.level.org.springframework=INFO, server.port=9092, logging.level.root=INFO}class=class org.springframework.core.env.PropertiesPropertySource
2015-12-24 22:36:08.313  INFO 22224 --- [           main] com.ge.predix.solsvc.boot.Application    : propertySource=class path resource [application-default.properties] values={**predix.oauth.clientId=admin:cargo_beta**, spring.profiles.active=local, predix.oauth.restHost=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}class=class org.springframework.core.io.support.ResourcePropertySource

---

        @PropertySources({
            @PropertySource("classpath:application-default.properties") 
        })
        @SpringBootApplication
        @Configuration
        public class Application
        {
            private static final Logger log = LoggerFactory.getLogger(Application.class);



            @Value("${predix.oauth.clientId}")   
            private static String loc;



public static void main(String[] args)
        {
            SpringApplication springApplication = new SpringApplication(Application.class);
            ApplicationContext ctx = springApplication.run(args); 

System.out.println("#############################################" +loc);

}
} 

Answer 1

简而言之，spring不会向静态成员中注入值：Spring: How to inject a value to static field?