The deepest analysis of spring boot MVC automatic configuration failure in the whole network
preface
I didn't plan to write this article, but after reading the core principles of SpringBoot, I suddenly thought of the MVC automatic failure problem encountered in the previous development. Although there are many articles and official documents on the Internet explaining the reasons, I still want to have a look at it in person. What I tho ...
Posted by pr0x on Mon, 29 Jun 2020 21:05:23 -0700
Front end development -- HTML
1, Introduction to front end development
As a programmer, if you want to develop a website, its essence is to receive the browser's request and return the data to the socket server, and the returned data format should conform to the rules recognized by the browser.
The purpose of the front-end development course is to take you to learn all th ...
Posted by syth04 on Mon, 29 Jun 2020 19:32:41 -0700
Try to write a game in python. This game is called alien invasion
preface
The text and pictures of this article are from the Internet, only for learning and communication, and do not have any commercial use. The copyright belongs to the original author. If you have any questions, please contact us in time for handling.
Install pygame and create a ship that can mo ...
Posted by jsims on Mon, 29 Jun 2020 02:55:29 -0700
WPF draws geometry
A basic graphic object of WPF Shape
The base class of WPF graphics is Shape, and all WPF graphics classes are inherited from Shape. WPF provides many ready-made Shape Object. All shape objects are derived from Shape Class inheritance. Available shape objects include Ellipse, Line ,Path,PolygonPolyl ...
Posted by BrettCarr on Mon, 29 Jun 2020 02:33:35 -0700
Implementation of call,apply,bind and new
call
First of all, let's look at the usage of call (a call)
call principle: let the previous function execute and change the direction of this. If the first parameter is not passed or is null or undefined, then this is window. If passed, this is the first parameter
function fn1(n,m) {
console.log('I am fn1',n,m);//I'm fn1 1 2
}
...
Posted by fdost on Mon, 29 Jun 2020 01:20:31 -0700
Understanding of parallel pipeline
Ideas sharing
Now there are two variables i,j. to calculate the result value of (i+j)*i/2, we can first find that each step of the calculation depends on the result of the previous step. For example, we have to add, then multiply, and then divide. It seems that we can't split it into parallel. This is ...
Posted by d00dle on Sun, 28 Jun 2020 21:46:56 -0700
position attribute of super detailed css
position attribute of super detailed css
position: static
Default value in CSS positioning. When the element does not set any position attribute, static is used by default to indicate that there is no location, and the element appears in the normal flow
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8 ...
Posted by rpmorrow on Sun, 28 Jun 2020 18:02:50 -0700
Definition of Java annotation
Define annotation syntax
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface MyAnnotation {
String className() default "";
String methodName();
}
@Target annotation description
@Target is the location restriction for annotation, and the ...
Posted by girlzz on Sat, 27 Jun 2020 22:26:18 -0700
Beauty of mybatis source code: 2.8. Parse the objectFactory element and configure the object creation factory of mybatis
Parse the objectFactory element and configure the object creation factory of mybatis
In Mybatis, there are many operations to instantiate objects through reflection, such as converting JDBC operation results to specific instance objects based on reflection.
For example, the following data are available:
MYSQL data:
Name
Sex (sex)
Age
panda
...
Posted by gazoo on Fri, 26 Jun 2020 20:48:57 -0700
Beauty of mybatis source code: 2.7. Analyze the plugins element to complete the configuration of mybatis plug-in
Parse the plugins element to complete the configuration of mybatis plug-in
> Click to see the usage of the typeAliases element
The plug-in mechanism of Mybtis is a very powerful function, which allows us to cut into the inside of Mybatis to perform some of the things we want to do during the operation of Mybatis.
Page helper, a popular pagin ...
Posted by mistercoffee on Fri, 26 Jun 2020 20:44:20 -0700