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preface Hibernate Validator is the reference implementation of Bean Validation. Hibernate Validator provides the implementation of all built-in constraints in JSR 303 specification. In addition, there are some additional constraints In daily development, Hibernate Validator is often used to verify the fields of bean s. Based on annotations, it ...

1. Distributed theory 1.1. What is a distributed system? In the book "principles and models of distributed systems", there is the following definition: "a distributed system is a collection of several independent computers, which are like a single related system to users";Distributed system is a system composed of a group ...

Tool inner layer Util: Tools The Util layer is used to store tool classes. Small functions with high independence or code segments with high repeatability can be extracted into the Util layer Data layer pojo: normal java object po: persistence layer, java objects mapped to tables in the database vo: object of data transfer between busines ...

Spring Boot learning Official website: https://spring.io/projects/spring-boot#overview file: https://docs.spring.io/spring-boot/docs/2.2.6.RELEASE/reference/html/ Reference video: [crazy God says Java] the latest tutorial of SpringBoot, IDEA version, is easy to understand_ Beep beep beep_ bilibili Project complete reference code: lexi ...

The SpringBoot 365 plan began to be updated. The plan knocked 365 SpringBoot cases to review and summarize to form a knowledge system. At present, 32 sections have been output. All source code is hosted on GitHub and Gitee.Here is the directory structure I created. ├── ./pom.xml └── ./src ├── ./src/main │   ├── ./src/main/java │   │ ...

SpringBoot manual build environment, Entity, Dao layer development, database model design If the plug-in spring assistant conflicts with our computer, we will not choose this plug-in, Build your own environment and create your own project 1. Create project (1) Select Maven project creation (2) Custom name (3) Create a finished look 2. Manu ...

From: Micro reading https://www.weidianyuedu.com/content/0117397506434.html 1, Use of asynchronous requests in Spring Boot** 1. Asynchronous request and synchronous request Synchronization request Asynchronous request Features: you can first release the threads and related resources allocated by the container to the request, reduce ...

We also analyzed the integration of shardingsphere component with spring boot to realize database and table division. Sub database and sub table are mainly used to solve IO problems and slow query caused by massive data. ShardingSphere is an ecosystem composed of a set of open-source distributed database middleware solutions. It is composed of ...

preface The previous article described the delay queue of JDK[ DelayQueue delay processing task record]In the actual distributed project, the delay queue of JDK is not used for the delay task. Because it is based on JVM memory storage and has no persistence operation, the task will be lost after the service is restarted.In the project, MQ dead ...

preface In springboot, there are several annotations for processing url request parameters, which are: @PathVariable, @ RequestHeader, @ RequestParam, @ MatrixVariable, @ RequestBody, let's learn today.   text 1,@RequestParam @RequestParam can be used to assign the specified request parameter to the formal parameter in the method. The source co ...