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This article mainly introduces "instance method of static attribute injection of spring class". In daily operation, I believe many people have doubts about the instance method of static attribute injection of spring class. Xiaobian consulted various materials and sorted out simple and easy operation methods. I hope to help you answer the doubts of "instance method of static attribute injection of spring class"! Next, please follow the small series to learn together!

We know that under normal circumstances, a bean of spring depends on other resources, such as properties or other beans, directly using @Value or @Autowired. These two annotations are equivalent to the property nodes in the spring application context xml file when defining beans. This is equivalent to calling the set method for each property.

However, when static methods in a java class need to reference a spring resource, we need to define static properties and then inject static properties by displaying the set methods that declare them (note that the set methods are non-static).

See the following example code, where the set method of the dingdingReceiverMan property injects a configuration via the @Value annotation

"monitor_log.dingding.receiverMan"; the set method of the redisUtil attribute injects a bean--the class "RedisUtil" decorated by @Component--with the @Autowired annotation.

@Component@Slf4jpublic class SendWarningMessage { private static String dingdingReceiverMan; private static RedisUtil redisUtil; static final String ACC_MONITOR_REDIS_KEY_PREFIX = "ACC_MONITOR_"; @Value("${monitor_log.dingding.receiverMan}") public void setDingdingReceiverMan(String value) { dingdingReceiverMan = value; } @Autowired public void setRedisUtil(RedisUtil value) { redisUtil = value; } public static void sendMsg(String mobile, String msg) { ... String redisKey = ACC_MONITOR_REDIS_KEY_PREFIX + MD5Util.md5(warningMsg); if (redisUtil.get(redisKey) != null) {log.info ("mobile phone number has been sent recently, in order to prevent frequent sending, this time will not be sent." {}", mobile); } else {log.info (" Message sent: {}", warningMsg); DingUtil.sendDingDing(dingReceiverMan, warningMsg); redisUtil.set(redisKey, warningMsg, 5 * 60); }... }}

At this point, the study of "instance method of static attribute implementation injection of spring class" is over, hoping to solve everyone's doubts. Theory and practice can better match to help everyone learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!

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