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@Configuration explain This is equivalent to using this class as the beans tag in Spring's XML configuration file, indicating that this is a configuration class usage Put the annotation on top of the class package com.ledao.config; import org.springframework.context.annotation.Configuration; /** * @author LeDao * @company * @create 20 ...

Interpretation of the core source code of ArrayList Feel easy to use little partner, please give me a praise Oh, thank you very much!!! Most of the content comes from the Internet, and individuals have added additional content to facilitate understanding and memory 1. Basic information of ArrayList The underlying array of ArrayList ...

ControllerAdvice analysis description @What controller advice sees most is the same as exception handling. Like this one below @ControllerAdvice public class TestControllerAdvised { @ExceptionHandler(value = Exception.class) public String modelAndViewException(){ // Do some exception handling logic } } When reading the source code of s ...

1, Advantages and disadvantages of TCP and UDP 1. TCP is connection oriented (for example, dial up to establish a connection before making a call); UDP is connectionless, that is, there is no need to establish a connection before sending data. 2. TCP provides reliable services. In other words, the data transmitted through TCP connection i ...

brief introduction We know that there are four types of numbers in Python, namely int, float, bool and complex. As a scientific computing NumPy, its data types are more abundant. Today, I will explain the data types in NumPy in detail. Data type in array NumPy is implemented in C language. We can compare the data types in the array in N ...

Android uses Kotlin and CameraX to take photos without feeling on the desktop and screen (with source code) Requirements: realize a silent photographing without displaying the interface, and can also switch the front and rear cameras and take photos through the volume keys in the rest screen state. After the photos are successfully saved, ther ...

catalogue   1, AJAX technology introduction 2, Introduction and use of JSON 1. Convert dictionary to JSON 2. Convert JSON to dictionary 3, Crawling dynamic data 1. Find in the web page source code 2. Use the Chrome check tool to find valid requests 3. Find the target link 4. Analyze the url structure Get the data on the current page ...

Video streaming with flash Flash video stream Streaming -- streaming It enables flash applications to effectively break large responses into small pieces over a long period of time. To illustrate this topic, I'll show you how to build a real-time video streaming server!   What is Streaming? (what is streaming media?) Streaming is a ...

Problem Description: Condition: given a multiple set s Containing n elements, the number of times each element appears in S is called the multiplicity of the element. The element with the largest multiplicity in the multiple set s is called mode. For example, S={1, 2, 2, 3, 5}. The mode of multiple set S is 2 and its multiplicity is 3.Note ...

If you already know the basic commands, you can This link View specific usage Redis    Redis is the abbreviation of remote dictionary service, that is, remote dictionary service;    Redis is an in memory database (data is stored in memory, and the main data in mysql is stored in disk), KV database (key value), and data str ...