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Preface: introduce a simple MyBatis encryption and decryption method. Few people mention this method in their daily study and work, so let's talk about it. If you already know this method, ignore this article! 1, Background Sometimes in our database, some sensitive information of users, such as mobile phone number, bank card and other informa ...

Be a positive person, not a positive person. Source: www.cnblogs.com com/jing99/p/11504113. html First, let's look at the main} configuration class of SpringBoot: @SpringBootApplication public class StartEurekaApplication { public static void main(String[] args) { SpringApplication.run(StartEurekaApplication.class, args); ...

preface Previously, in the process of using SpringBoot to build background services, we usually access a database and a data source The MQTT service used in the new project needs authentication, but the MQTT service is used by multiple projects, so its authentication database is in a separate database. At this time, we need to configure ...

Recently, we encountered a troublesome demand. We need a microservice application to access two different Redis clusters at the same time. Generally, we don't use Redis in this way, but the two Redis were originally different business clusters, and now a microservice needs to be accessed at the same time. In fact, we may encounter similar scen ...

preface What is MVC mode In the classic MVC mode, m refers to the business model, V refers to the user interface, and C is the controller. The purpose of using MVC is to separate the implementation codes of M and V, so that the same program can use different forms of expression—— An idea of design pattern Spring MVC is a modu ...

Recently, I read the source code of SpringBoot and found a strange phenomenon: there are two places in the project with the function of publishing events. One is the SpringApplicationRunListener interface; The other is the publishEvent method of the ApplicationEventPublisher interface, which is implemented by the ApplicationContext interface. T ...

Spring learning notes pom.xml required configuration ​ 1. Specify JDK version <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</targ ...

preface Some scenarios require us to retry some tasks under abnormal conditions. For example, when calling a remote RPC service, the first call may fail due to network jitter. We can restore normal after several attempts. Spring retry is a spring based retry framework provided by spring, which is very easy to use. Official website address: Gi ...

1. What is annotation Annotation is a code special tag, format: @ annotation name (attribute name = attribute value, attribute name = attribute value...)Use annotations, which act on classes, properties, and methodsThe purpose of using annotations is to simplify xml configuration 2. Spring provides annotations for creating objects in Bean man ...

First, we need to clarify the role of maven: Maven is essentially a project management tool, Abstract the project development and management process into a project object model (POM). Developers only need to make some simple configurations to complete the construction, report and document generation of the project in batches. Using remote war ...