Thymeleaf Common Grammar: Operator of Expressional Grammar

The constants of Thymeleaf expression grammar are divided into string constants, number constants, Boolean constants and null constants.Operators are divided into arithmetic operators, relational operators, conditional operators and no operators. Development environment: IntelliJ IDEA 2019.2.2Spring Boot version: 2.1.8 Create a new Spring Boo ...

Posted on Mon, 14 Oct 2019 11:39:34 -0700 by TalonFinsky

Universal rule matching algorithm (original) (java+.net)

1. Spring Spel l or Google Aviator can be used in Java If you use Aviator, add the following dependencies <dependency> <groupId>com.googlecode.aviator</groupId> <artifactId>aviator</artifactId> <version>4.1.2</version> </dependency>   However, ...

Posted on Mon, 14 Oct 2019 11:28:43 -0700 by kjtocool

POJ-3279 Fliptile (shape pressure dp)

Question meaning: The 01 matrix of the question meaning gives you mxn can flip a coordinate, but at the same time it will flip around (up and down, left and right). Ask how to flip all of them to 0 at least, and print the flipped image.Idea: We can use dfs to search violently, of course, we can also use the shape pressure dp. It happens that I ...

Posted on Mon, 14 Oct 2019 11:00:06 -0700 by upit

Docker's NameSpace and Group C

Docker container technology is essentially different from traditional virtualization technology. Traditional virtualization technology virtualizes multiple OSs on the basis of physical resources of station hardware, and then builds a relatively independent program running environment on the basis of OS. Docker is virtualized on the basis of OS ...

Posted on Mon, 14 Oct 2019 10:51:19 -0700 by DeGauss

Advanced Security of springboot - Integrating spring security

Case: According to the different level of martial arts, people can see different secret books of martial arts. 1. Create a small project: Project structure 2. Project code (without security certification): Controller layer: @Controller public class TestController { @GetMapping("/") public String i ...

Posted on Mon, 14 Oct 2019 10:39:07 -0700 by timandkitty

tp5 Do not use succes and error methods in try catch

tp5 should not use the succes and error methods that come with the framework in try catch. Original address: https://www.xianhenyuan.com/archives/305 Like this: /// New operation $AdminUserModel = model('AdminUser'); try{ $user_id = $AdminUserModel->add($data); empty($user_id) ? $this->er ...

Posted on Mon, 14 Oct 2019 10:08:22 -0700 by powelly

Summer vacation D14 T2 monokuma (and search + ST table) [SCOI2016] sprout

Title Description Find a number with n length (excluding leading zeros) so that it satisfies m restrictions, each of which corresponds to [l, r] bits and [L, R] bits. For 100% data, 1 < n,m < 100000, 1 < Li < Ri < n, 1 < Li < RI < n, and guarantee Ri-Li=ri-li. Title Solution It can be imagined that if we give attenti ...

Posted on Mon, 14 Oct 2019 08:52:18 -0700 by Solemn

Mybatis Source Analysis: Environment Settings

Mybatis Environment Configuration Class Environment When initializing the Mybatis framework, we need to configure the environment element, which allows multiple elements, so that we can switch back-end storage in different environments. If you have an id attribute for the environment, the id must be unique. Otherwise, the subsequent configurat ...

Posted on Mon, 14 Oct 2019 08:48:17 -0700 by Nabster

Python Crawler Introduction Tutorial [15]: Fried Egg Web XXOO Picture Grabbing

Today, I wrote an egg-frying website http://jandan.net/ooxx, which is a favorite website of crawler enthusiasts. In fact, this website is a little interesting. Many people have written more than N tutorials on the website. There are all kinds of ways. Of course, the website itself is constantly improvin ...

Posted on Mon, 14 Oct 2019 08:46:26 -0700 by metallord

MySql 5.7.26 Installation-free version configuration process and related problem solving (win10 version)

I. Download and Installation 1. Download MySQL 5.7.26 Download address: https://dev.mysql.com/downloads/mysql/ After downloading, decompress to a custom path. It is important to note that there is no Chinese in the path. 2. Create a new INI file named my.ini The contents are: [mysql] # Sett ...

Posted on Mon, 14 Oct 2019 08:43:10 -0700 by cjbeck71081