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In development, an exposed interface may face a large number of repeated requests in an instant. If you want to filter out repeated requests and cause damage to the business, you need to implement idempotent Idempotent: Any number of executions has the same impact as a single execution. The final meani ...

The copyright of this article belongs to the official account of WeChat public code ID:onblog. If it is reproduced, please keep the original statement of the paragraph, and the offender will investigate it. If there are any shortcomings, please welcome the official account of WeChat public. ] Yesterday, I found out by accident lombok The auth ...

A Preliminary Study on the Use and Design of cola Extension Points Packaging changes provide flexibility to respond to changes in program requirements. Extension point use Steps: Defines an extension point interface, which can be a validator, converter, entity; must end with ExtPt to represent an extension point. For example, I define an exten ...

How to use Spring Boot to send mail? Spring Boot provides a starter: Spring Boot starter mail for sending mail. Next, let's see how to send mail using Spring Boot.   1, Configure mailbox Here we use 163 Netease email 1. Open SMTP service 2. Set / reset client authorization password   2, Coding implementation 1. Add dependency 1 <!--mail-- ...

@ControllerAdvice This annotation is the core of unified exception handling Is an Advice that acts on the control layer. This annotation can collect common @ ExceptionHandler, @ InitBinder and @ ModelAttributes methods into one type and apply to all controllers Design ideas in this category: Use the @ ExceptionHandler annotation to c ...

requirement analysis Generally, when we browse the website, we can often see the effect as shown in the figure below (the picture comes from CSDN) This kind of comment is nested layer by layer, and there are several replies to the comment under each comment. This kind of structure is similar to the tree structure. Users can see it at a gla ...

Java implements an AES/ECB/PKCS5Padding encryption and decryption algorithm tool class Encryption algorithm: AES Mode: ECB Complement method: PKCS5Padding <!-- more --> 1. Tool Classes import lombok.Getter; import lombok.Setter; import lombok.extern.slf4j.Slf4j; import org.springframework.util.Base64Utils; import javax.crypto.Cipher; i ...

stay Lombok is often used, but do you know how it works? , and Lombok is often used, but do you know how it works? (two) In the two articles, the underlying principle of Lombok is introduced. In fact, it is summed up as a sentence that is realized by changing the abstract syntax tree during compilation. The above two articles have talked about ...

Wechat silent authorization process related problem process record Related tools Intranet penetration tool Peanut hull There is free 1G traffic per month, but I need to hold my ID card to take photos and upload. It's too troublesome to use. natapp Easy to use, you need to scan the real name with Alipay. other... Other friends also ...

The core of Spring security is a set of filter chains. Project launch on autoconfig. The core is the Basic Authentication Filter used to authenticate the user's identity; One filter handles one authentication mode; For the username password authentication filter, Will check if it is a login requ ...