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1, PrefaceSpringBoot 2.6.x does not recommend the use of circular dependency, which is good news. Springboot gradually guides developers to write standard code from the bottom. At the same time, it is also sad news. The application scenarios of circular dependency are too wide.If you upgrade from a lower version to 2.6 x. Then the first problem ...

springboot: common annotations 1, spring common annotations Package scanning + Component annotation @Component: Refers to various components @Controller,@Service,@Repository Can be called@Component. @Controller: Control layer @Service: Business layer @Repository: Data access layer selector @Conditional，Only when the specified condit ...

1, Scene source In daily development practice, it is often necessary to use tools (such as Postman and curl commands) to build http requests for development and testing. When an interface requiring token authentication is encountered, it may be necessary to log in to additional pages or request other interfaces to obtain tokens. If it is necess ...

preface Congratulations to all the friends who read this article for successfully unlocking the quick start content of RabbitMQ series 🎁 Through this article, you will quickly learn what middleware is? What is rabbit MQ? How does RabbitMQ work? Finally, Xiaoming will take you through an example to deepen your impression of RabbitMQ ...

Asynchronous orchestration Introduction to completable future Future is a class added in Java 5 to describe the results of an asynchronous calculation. You can use the isDone method to check whether the calculation is completed, or use get to block the calling thread until the calculation is completed and the result is returned. You can a ...

Practical skills of Spring and SpringBoot development Links SpringBoot knowledge column: https://blog.csdn.net/qq_37248504/category_10924414.html Spring knowledge column: https://blog.csdn.net/qq_37248504/category_10924424.html Back end development knowledge column: https://blog.csdn.net/qq_37248504/category_9699519.html Get Applica ...

install Lombok installation is divided into two parts: the installation of Idea plug-in and the import of pom file in maven. Installation of Idea plug-in Click settings, select plug-ins, search Lombok (Networking required) in the plug-in configuration of Idea or download local installation on the official website, and click initialize in ...

I In the background unit test, the test results of run and debug mode are differentThe flow chart of testing the update method under the controller at presentAt present, the problem lies in parameter capture. In the debug mode, when I execute with one line, I will execute to the second line entityargumentcaptor When getvalue(), the test reports ...

1. Introduction reference resources: mysql essentially uses database rollback, and the table engine needs InnoDB The versions used are as follows <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.or ...

preface    companies in the Internet industry must encrypt the sensitive fields of the database. There are many schemes. The most direct one is to write an encryption and decryption tool class and then process it manually in each business logic. This method is obviously unrealistic in slightly large-scale projects, which is not ...