Programming VIP

1. Gateway overview The so-called API gateway refers to the unified entrance of the system. It encapsulates the internal structure of the application and provides unified services for the client. Some public logic independent of the function of the business itself can be realized here, such as authentication, authentication, monitoring, ro ...

File upload is one of the most common functions in project development. Spring MVC can well support file upload, but MultipartResolver is not installed in the context of spring MVC by default, so it cannot handle file upload by default. If you want to use spring's file upload function, you need to configure MultipartResolver in the context. Fr ...

Introduction to spring MVC Official documents: https://docs.spring.io/spring-framework/docs/current/reference/html/web.html#mvc First try spring MVC Three major components that must be configured to use spring MVC: Process mapper, process adapter, view parser schematic diagram Operation steps Import Java Web and Spring dependenc ...

This paper summarizes the Java collection framework Here are some articles about collections https://blog.csdn.net/weixin_42533238/article/details/106651056 https://blog.csdn.net/ThinkWon/article/details/98844796 https://blog.csdn.net/feiyanaffection/article/details/81394745 Take a look at the structure chart first to get a general impres ...

ConfigurationClassPostProcessor handles all configuration classes, including @ Component, @ Bean, @ Import annotation, etc. Since the configuration class may introduce new configuration classes and the new configuration classes need to be processed, the ConfigurationClassPostProcessor uses a do while loop to process the configuration classes un ...

0. Background As we all know, SPI has good practice in many places, such as JDBC driver loading, dubbo, etc. The autoConfiguration of SpringBoot project is also a similar principle. It feels good to use it for module decoupling. For example, we do a service of application management, which has the functions of application installation, upgrade ...

Log4j log: What is Log4j? log4j is a common logging framework, which is used to record the execution process or exceptions of the application. It is recorded in the log file. The operation and exception information of the application can be known through the log file. Why log? We know that the program will produce a lot of information during ...

1, Gossip I'm a little sleepy today, but I still insist on learning for a while. Today, let's take a look at another major feature of Spring, AOP 2, Basic points 1. Basic concepts AOP means aspect oriented programming. It is a technology to realize the unified maintenance of program functions through precompiled mode and dynamic agent during ...

1.@RequestParam       1. It is used to receive the parameters passed by the method before the parameters passed by the method (it is an annotation that accepts common parameters in spring MVC)       2. Attribute: name in value request parameter required: whether this parameter is provided in the reques ...

Uploading files should be the most frequently encountered scenario. Today, let's simply do a Spring Boot file uploading function with you. Without much nonsense, let's start directly. The project structure is as follows: pom dependency <dependencies> <dependency> <groupId>org.springframework.boot</groupId&g ...