Springboot web construction yml module annotation of Java framework

SpringBoot Spring Boot is a one-stop framework for integrating all application frameworks, simplifying the development of spring applications. It is a runtime application monitoring framework with more conventions than configurations, less complexity and simplicity, and ready to use out of the box, quasi production environment To quickly build ...

Posted by ngng on Thu, 05 Mar 2020 01:07:52 -0800

Understanding Java - AQS

java.util.concurrent provides many synchronizers, such as the commonly used ReentranLock, ReentrantReadWriteLock, Semaphore and CountDownLatch. They all rely on the processing provided by the AbstractQueuedSynchronizer class. ReentranLock ReentranLock is a reentrant Lock, similar to synchronized. The b ...

Posted by dcampbell18 on Wed, 04 Mar 2020 23:34:58 -0800

Address translation and page interrupt in operating system page virtual storage management

1, Purpose of the experiment Through writing and debugging storage management simulation program to deepen the understanding of storage management scheme. Familiar with virtual storage management of various page elimination algorithm. Through writing and debugging address conversion process simulation ...

Posted by Richard on Wed, 04 Mar 2020 19:24:13 -0800

Exceptions: Role, Optimized Development, and Assertions

0 Summary Exceptionally reasonable application takes up a large proportion in the daily development, which can improve the development efficiency. The following are mainly divided into why there are exceptions, the role of exceptions and how to use them rationally. 1 Origin Early development languag ...

Posted by scottshane on Wed, 04 Mar 2020 18:09:40 -0800

[Programming Question m_0006] Black and White Card

Links: https://www.nowcoder.com/questionTerminal/bfb60fce32974c45a806e567e17183ba Source: Niuke.com Niu Niu has n cards in a sequence. Each card is black on one side and white on the other.In the initial state, some cards are black up and some are white up.Niu Niu now wants to turn over some cards to get an alternating arrangement in which each ...

Posted by jeliot on Wed, 04 Mar 2020 08:37:48 -0800

Network Crawler Generation Agent ip

agent When writing web crawlers, we often encounter the problem of frequent IP access being blocked. The commonly used solution is to proxy ip.To do this, I wrote a sample program that randomly generates an available proxy ip. program package proxy; import java.io.IOException; import java.net.URISyntaxException; import ...

Posted by marseille on Wed, 04 Mar 2020 08:23:59 -0800

Using array to realize circular queue (java version)

It is realized by taking the mold The ideas are as follows: Front refers to the first element of the queue, that is to say, arr[front] is the first element of the queue Initial value of front = 0 The rear points to the next position of the last element of the queue, because you want to make a space a ...

Posted by speedy33417 on Wed, 04 Mar 2020 07:10:17 -0800

Talk about skywalking's AbstractPlatformTransactionManagerInstrumentation

order This paper mainly studies the AbstractPlatformTransactionManagerInstrumentation of skywalking AbstractPlatformTransactionManagerInstrumentation skywalking-6.6.0/apm-sniffer/optional-plugins/optional-spring-plugins/spring-tx-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/transaction/define/AbstractPlatformTransactionManagerIn ...

Posted by YodaOfCamarilla on Wed, 04 Mar 2020 06:42:11 -0800

Using spring MVC to upload files

Original address: http://www.yiidian.com/springmvc/file-upload.html File upload is a common requirement in the presentation layer. In Spring MVC, the common file upload tool of Apache is used to complete file upload and encapsulate it, making it more convenient for developers to use. Let's see how to develop it? 1 import common file upload pack ...

Posted by enoyhs on Wed, 04 Mar 2020 05:04:44 -0800

Java Concurrent Programming (01): thread creation, state cycle management

Source code: GitHub point here || GitEE point here 1, Introduction to concurrent programming 1. Basic concepts program Computer programs, procedures, rules and possible files, documents and data related to the operation of computer system. process A process is a program in a computer. A running activity on a data set is the basic unit of ...

Posted by pea on Wed, 04 Mar 2020 04:44:13 -0800