Recent Posts
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Method of batch importing Excel data using POI in Java
1、 Definition Apache POI is an open source function library of the Apache Software Foundation. POI provides APIs for …… -
Explain how to load the properties configuration file using spring
I remember that when writing a web project, the reading of the configuration file was completed with the class propert…… -
Zuul gateway service of spring cloud
Why do I need a gateway? We know that we want to enter a service itself. Obviously, we don't have a particularly good …… -
A simulation example of train ticketing system based on Java multithreading
1. Preface In order to learn multi-threaded sharing and communication, we simulate a train ticketing system, assuming …… -
Example of Java simulating ordered linked list data structure
Ordered linked list: sort by key value. When the chain head is deleted, the minimum (/ maximum) value is deleted. When…… -
Method for realizing timing task with rabbitmq delay queue
scene Timed tasks are often used in development. For shopping malls, there are many timed tasks, such as timed expirat…… -
Detailed explanation of using rabbitmq routing in spring boot
In the last tutorial, we created a fan out switch. We can deliver messages to multiple consumers in the form of broadc…… -
Java selenium operation pop-up window example code
How to handle pop ups in selenium Reading catalog principle In the code, through @ h_ 301_ 20@ Set allWindowsId = d…… -
Java selenium operation browser instance
This article introduces selenium operating browser Reading catalog Browser maximization forward, backward, refresh Scr…… -
Detailed explanation of the addition, deletion and modification of linked list for Java description of data structure learning
preface Linked list is a common basic data structure. It is a linear list, but it is not stored sequentially in memory…… -
Volatile in Java cannot guarantee thread safety (example explanation)
Today, I typed the code to study whether the volatile keyword of Java can ensure thread safety. After practice, volati…… -
Feign declarative service invocation in spring cloud
In the previous article, we can find that when we call the APIs of other services through resttemplate, the required p…… -
Java multi thread simulation ticketing program and thread safety
In the knowledge of threads in Java, the ticketing program is very classic. There are also some problems in the progra…… -
Double linked list design and implementation of Java data structure and algorithm
In the single linked list analysis, we can know that each node has only one next field pointing to the successor node.…… -
Sample code of Java using SFTP to download files regularly
Introduction to SFTP SFTP is the abbreviation of secure file transfer protocol, a secure file transfer protocol. It ca…… -
Implementation method of Java selenium using browser debugging tool
In UI element - based automated testing, both desktop UI automated testing and Web UI automated testing First, we need…… -
Spring boot uses rabbitmq to implement topic topics
In the previous article, we implemented the flexible configuration of the message system. Instead of using the fan out…… -
Java code practice 12306 ticketing algorithm (II)
On Friday, I had nothing to do. Based on the previous article on the analysis of 12306 ticket selling algorithm (Java …… -
Explain in detail the four ways spring loads the properties configuration file
1、 Load the configuration file through the context: Property placeholder tag 1. Usage example: in spring Add tags to …… -
Deep analysis of Java exceptions
Java exceptions are divided into two categories: checked exceptions and runtime exceptions. Checked exceptions are exc…… -
Configuration file application. In spring boot Properties usage
1、 Call of configuration document configuration item @ h_ 301_ 4@ After startup, enter @ h directly in the browser_ 3…… -
Sample code for using rabbitmq in spring boot
I haven't written about spring boot for a long time. I happen to be writing about spring cloud bus recently. Because t…… -
Solution to the failure of obtaining new page elements based on Selenium
When we use selenium to realize simulated Login, after obtaining the login button element, we can directly call its cl…… -
Solution to the failure of obtaining new page elements based on Selenium
When we use selenium to realize simulated Login, after obtaining the login button element, we can directly call its cl…… -
Java data structure linked list operation circular linked list
Java linked list operation: circular linked list Main analysis examples: 1、 Single linked list circular linked list 2…… -
Analysis of 12306 ticketing algorithm (Java version)
1. Take G71 train as an example, first carry out occupation code for train number platform (add it from 1 to the last …… -
Parsing HTML file instances using open source library jsoup in Java
Html is the core of web. All the pages you see on the Internet are HTML, no matter they are dynamically generated by J…… -
Java uses responsibility chain mode to deal with students’ leave
This paper illustrates how Java uses the responsibility chain model to deal with students' leave. Share with you for y…… -
Java uses a composite pattern to implement a functional example of representing the organizational structure of a company
This article illustrates how Java uses the composite pattern to realize the function of representing the company's org…… -
Parsing text information instances in HTML tables using jsoup
Jsoup is a very useful HTML parsing tool. When using, you need to download the corresponding jar package. The followin…… -
Java method for reading properties configuration file
This article describes the method of reading the properties configuration file by Java. Share with you for your refere…… -
Parse HTML in Java code and get the value method
Sometimes when we get a page, we need to parse it in Java code to get the data in HTML. Jsup is a very convenient tool……