Programmer Group

Intro TOTP is a time-based one-time password generation algorithm, which is composed of RFC 6238 Definition. Different from the event based one-time password generation algorithm HOTP TOTP is time-based and has the following relationship with HOTP: TOTP = HOTP(K, T) HOTP(K,C) = Truncate(HMAC-SHA-1(K,C)) Among them: T: T = (Current Unix time - ...

https://start.spring.io/ generate SpringBoot project   The pom file should be me: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0 ...

Article directory I. Basic operation How to respond to requests 1. ModelAndView mode 2. The server does not respond to the result to the client Returns a string 4. Return to a page Absolute path Relative path 5. Prefix and suffix Configure view resolver Redirect (add a redirect) HttpServletRequest and HttpServletResponse ...

Reprinted from: https://www.cnblogs.com/retry/p/9328715.html QChar of QT QChar class is a class used to represent a character in Qt, which is implemented in QtCore shared library. The QChar class internally represents a character in 2-byte Unicode encoding. Coding //char type is a built-in type in c/c + +, which describe ...

Using spring Initalizr to build spring boot in idea Click new item and select as shown in the figure After clicking next Click next, and then select as shown in the figure Selection path Click finish, as shown in the figure, delete what you don't want, and the project is completed Build a controller and start the project to see the returne ...

Background: Before last year, we could upload web resources in batches according to the directory WebResourceUtility. Yesterday, we found that it was useless. It was not very convenient to get the source code of WebResourceUtility and change it. I felt that the official code was too redundant and too long, which was not in line with my simple ...

Originally, I wanted to learn about Netty components first, then learn about component applications. Then, learning more and more makes me feel weird. I always feel that there is something missing. I don't know how to use components when I learn them. Think about learning from Netty applications first. Own technology learning method: first ...

I believe everyone has read a lot of articles about thread pools, which are also necessary for interviews. If you still know a little after reading a lot of articles, I hope this article can really help you master Java thread pools. A major focus of this article is source code parsing, with a small amount of space to introduce thread pool desig ...

I. search for data and access as many IP proxy data as possible, and store the IP proxy pool 2. Filter the data from the agent pool and add the valid data to another table, and update it in time III. update IP proxy pool regularly Because the IP address of the website needs to be updated in real time, and the program needs to fi ...

Intent: intention. It is generally used to start a new Activity. It can be divided into two types: explicit intent and implicit intent To display Intent is to directly use "class name" to specify which activity to start: Intent intent = new Intent (this, activity. Class); where activity.class is to specify the activity to start For ...