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Simple Factory Mode Basic Definition: Simple factory mode, also known as static factory method, is a creation mode.In simple factory mode, instances of different classes can be returned depending on the parameters passed.The Simple Factory pattern defines a class specifically for creating instances of other classes that share a common parent. P ...

Preface Because of playing the play framework before, I don't know much about springboot; I have many doubts: ① How can custom annotations work in springboot ② How does the annotation plug-in like Lombok change the generated code Lombok plug-in Today, I found an online post called "Lombok", and I understood my doubts ...

Today record the implementation of verification code, hope to help you! First, let's look at the effect of the implementation:   The implementation of this verification code does not use too many plug-ins. If you don't speak much, you can directly use the code. You can take it. The org.apache.commons.lang3.RandomUtils tool class is used in the ...

Chapter one: SpringBoot/Spring uses @ Value for attribute binding (podcast code for wisdom spreading)   The ConfigurationProperties annotation will read the properties from the global configuration file by default. When there are many properties, the main configuration file(application.yml, application.properties) will be bloated, so it is ne ...

White list 2.4.1 what is a white list Problem: all requests are blocked and do not meet the actual requirements. (some requests do not need to be intercepted) White list: used to store the request path that does not need to be blocked 2.4.3 implementation Step 1: modify the gateway yml file, and configure the path that does not need to be b ...

Original Link: https://mrhelloworld.com/posts/spring/spring-cloud/consul-service-registry/ Netflix Eureka 2.X https://github.com/Netflix/eureka/wiki officially announced the suspension of development, but it has little impact on domestic users. On the one hand, Eureka 1.X series is mostly used in China, and the official is actively maintaining ...

I collated Java advanced materials for free, including Java, Redis, MongoDB, MySQL, Zookeeper, Spring Cloud, Dubbo high concurrency distributed and other tutorials, a total of 30G, which needs to be collected by myself.Portal: https://mp.weixin.qq.com/s/osB-BOl6W-ZLTSttTkqMPQ For the common design modules in the microservice architecture, w ...

brief introduction In the previous article, QQ login is completed. Generally, if the current QQ login user is not registered in our database, he should skip to the registration binding page. If we do not configure the jump page, he will jump to / signup by default Source code analysis Enter social authentication filter private Authenti ...

MQTT protocol is widely used in the field of industrial Internet of things because of its low latency and high efficiency. The previous article introduced how to send MQTT message by code. Based on the previous article, this paper implements the subscription and reception of MQTT message.Operation steps: Introduce related dependencies <de ...

This article talks about the PriorityBlockingQueue, a quote from the book: This is the unbounded blocking queue with priority. Every time you leave the queue, you will return the elements with the highest or lowest priority (here the rules can be made by yourself). The internal is implemented by using the balanced binary tree, and the traversal ...