java - Spring引导 Autowiring 在配置类中给出null

Question

我正在尝试在配置类中 Autowiring 一个类，如下所示:

    @Configuration
    public class GemfireConfig {
    @Autowired
    private CloudCacheDataLoader loader;

    @Bean(name = "VariableRangeCache")
            ClientRegionFactoryBean<Long, VariableRange> variableRangeRegion(
                    @Autowired ClientCache gemfireCache) {
                ClientRegionFactoryBean<Long, VariableRange> orderRegion = new ClientRegionFactoryBean<Long, VariableRange>();
                orderRegion.setCache(gemfireCache);
                orderRegion.setClose(false);
                orderRegion.setShortcut(ClientRegionShortcut.CACHING_PROXY);
                orderRegion.setLookupEnabled(true);
                logger.info("Dataloader initialized with - " + loader);
                orderRegion.setCacheLoader(loader);
                return orderRegion;
            }
}

CloudCacheDataLoader 类:

    @Component
    @Qualifier("cloudCacheDataLoader")
    public class CloudCacheDataLoader implements CacheLoader<Long, VariableRange>{


        private static final Logger logger = LoggerFactory
                .getLogger(CloudCacheDataLoader.class);


        @Autowired
        CacheDataService dataService;

        @Autowired
        CacheService cacheService;
        }

当我运行 Spring boot 应用程序时，在 orderRegion 对象中设置加载程序变量时，我得到 NULL。由于我是 Spring 新手，有人可以帮助我吗？

[编辑]我的日志中没有异常(exception)，因为如果该对象为 NULL，则不会使用该对象。以下是我在日志文件中看到的日志条目:

2018-02-16T16:01:30.300-05:00 [APP/PROC/WEB/0] [OUT] [info 2018/02/16 21:01:30.296 UTC <Cache Client Updater Thread on localhost(cacheserver-94c0919e-80d5-4675-bb69-741728f64577:8620)<v3>:49152(version:UNKNOWN[ordinal=70]) port 40404> tid=0x25] Cache Client Updater Thread on localhost(cacheserver-94c0919e-80d5-4675-bb69-741728f64577:8620)<v3>:49152(version:UNKNOWN[ordinal=70]) port 40404 (localhost:40404) : ready to process messages.
2018-02-16T16:01:30.300-05:00 [APP/PROC/WEB/0] [OUT] [info 2018/02/16 21:01:30.299 UTC <main> tid=0x1] Pool DEFAULT started with multiuser-authentication=false
2018-02-16T16:01:30.359-05:00 [APP/PROC/WEB/0] [OUT] 2018-02-16 21:01:30.358 INFO 22 --- [ main] c.c.o.e.cloudcache.POCApplication : Dataloader initialized with - null
2018-02-16T16:01:30.371-05:00 [APP/PROC/WEB/0] [OUT] 2018-02-16 21:01:30.371 INFO 22 --- [ main] o.s.d.g.client.ClientRegionFactoryBean : Falling back to creating Region

[编辑]这是主类-

@Import(GemfireConfig.class)
@SpringBootApplication
@Profile("prod")
@EnableGemfireRepositories("cloudcache.repository")
@EnableJpaRepositories("cloudcache.repository")
@EnableDiscoveryClient  
@EnableCircuitBreaker
public class POCApplication {

    public static void main(String[] args) {
        SpringApplication.run(POCApplication.class, args);
    }

}

Answer 1

使用@ComponentScan(basepackage = "com.corp.api")扫描所有bean(使用@component定义的类并通过@Autowire在main中使用它们)

    @...
    @EnabledAutoConfiguration
    @ComponentScan(basepackage = "com.corp.yourmainpackage")
    public class POCApplication {
    ...
    }

检查 POCApplication 类上的所有注释是否都是必需的，并且没有任何冲突且不是不必要的。