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Java reflection mechanism is a very powerful function, which can be seen in many large projects such as spring and mybatis. Through the reflection mechanism, we can get the type information of the object during running. With this feature, we can implement design patterns such as factory pattern and agen ...

This article is and is included in the springboot-guide (not just SpringBoot but also Spring Key Knowledge Points), address: https://github.com/Snailclimb/springboot-guide .Make it easier for you to learn Spring!If you feel good, welcome to a Star! Many times we need to put some commonly used configuration information such as Aliyun oss confi ...

If we want to configure monitoring for tasks, it's the normal way One by one configuration, it's more troublesome. Now use ActivitiEventListener to listen to global events, judge different event types, and then execute different business logic. 1. Define event handler interface Using interfaces to define uniform conventions public interface Eve ...

Fundamentals The definition of a Class consists of two parts: the declaration of the class and the body immediately following the declaration.The main part is enclosed by a pair of braces and ends with a semicolon.Two keywords within the principal, public and private, are used to denote "member access" for each block.Public member s c ...

From Here https://www.jianshu.com/p/1ef5cd97ba2b   What is Zipkin Zipkin is an open source distributed real-time data tracking system, designed based on a paper by Google Dapper and developed by Twitter.Its main function is to aggregate real-time monitoring data from heterogeneous systems.Distri ...

1. spring security is for permission authentication. 2. Database based authentication is used in all projects. First, we create a permission related table. General authority controls include    user → role → data_privilege    user →data_privilege  Users control through role. Data permission is ...

1. Create a new Spring Boot project The specific steps are as follows Select the appropriate dependency: Under src/main/resources of the spring boot project, the application.properties file exists by default. This is the configuration file of the spring boot project. Almost all related configurations ...

1. Configuration related 1.1 AbstractChannelSecurityConfig Abstract class encapsulating authentication logic for Http pages ApplyPasswordAuthentication Config sets the default form login authorization authentication route for HttpSecurity, and imoocAuthentication SuccessHandler, imoocAuthentication ...

1, Ask questions When spring MVC encapsulates custom type objects, JavaBean s are bound to the data submitted by the page one by one. Here's what you need to know: 1) all data submitted by the page are strings 2) attributes in JavaBean s, such as Integer age; When binding data, the following oper ...

MongoDB pipeline definition The aggregation pipeline of MongoDB will pass the results of MongoDB documents to the next pipeline after one pipeline is processed. Pipeline operations are repeatable. Common Aggregate pipeline operators of Aggregate in SpringBoot Customize the collection userCollection and initialize the data structure Store bean u ...