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Principle of Spring listener - basic use (I)Principle of Spring listener - handwriting listener (II)Spring listener principle spring listener source code analysis (III) summary To understand the implementation principle of ApplicationListener, you need to have a little understanding of Spring's extension point BeanPostProcessor. This interfac ...

RabbitMQ is divided into two parts: one is the switch (dealing with the sender) and the other is the queue (dealing with the listener) No matter which working mode, the sender will only send the data to the switch, and then the switch will send it to the queue, and then the queue will send it to the listener, or the listener detects that there ...

1. Preface Generally, when using the Spring Boot framework, if we do not specify the serialization type of the interface, we will use the Jackson framework integrated by default by the Spring Boot framework for processing, and serialize the data responded by the server into JSON format through the Jackson framework. This paper mainly summariz ...

catalogue 1, Overview 2, @ EnableAspectJAutoProxy principle 3, Summary 1, Overview In the previous article, we introduced some related terms in Spring AOP and demonstrated how to use AOP. We have learned that to enable the Spring AOP function in the annotated version, we can add the @ EnableAspectJAutoProxy annotation on the configuration ...

tips: This article starts with the official account of the official account. The source code is checked in the public address aop. What is AOP? AOP (aspect oriented programming) translates directly into aspect oriented programming. AOP is a programming idea and a supplement to object-oriented programming (OOP). Object oriented progra ...

1. Spring integrated Web environment Disadvantages: the application context object is obtained through new ClasspathXmlApplicationContext, but it must be written every time the Bean is obtained from the container. Such disadvantages are that the configuration file is loaded many times and the application context object is created many times S ...

upload The code of the Controller is very simple. Because the spring MVC framework is used, you can directly connect it with MultipartFile. Because it is a multi picture upload, it is connected with an array. Note here that the parameter name should be the same as the name in < input > Values correspond to: @RequestMapping("/pic") @Resp ...

The framework brings a lot of convenience to our development, and the use of many previously learned knowledge will be slightly different in the framework. This article mainly describes the use of filters and interceptors in the framework, and analyzes the relationship and differences between filters, interceptors and AOP filter The function ...

Create a springboot project Compilation knowledge 1. target If mapper If the XML file is not included in the target, it should be added in the build first, and then the clean Maven project should be compiled again <build> <resources> <resource> <directory>src/main/java</direc ...

1, Common permissions jurisdiction explain read Allows the user to read the specified database readWrite Allows users to read and write to the specified database userAdmin Allow users to send messages to system The users collection is written, and users can be created, deleted and managed in the specified database dbAdmin Allows us ...