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

Alternative use of Thread, how to execute a code that may deadlock/jam/deadlock

Scenarios and requirements A third-party code needs to be executed, which may be deadlocked/jammed/dead-loop. After the timeout, if it does not end, the task execution is considered to fail and the execution is withdrawn. Implementation scenario 1: Using Task timeout Reference to the implementation method:https://www.cnblogs.com/jasongrass/p/10 ...

Posted on Mon, 14 Oct 2019 08:19:58 -0700 by ph3n0m

Sword finger offer: stack push-in, pop-up sequence (Java)

1. Topic Description Enter two integer sequences. The first sequence represents the stack's pressing order. Please determine whether the second sequence is likely to be the stack's pop-up order. Assume that all the numbers pushed into the stack are unequal. For example, sequence 1, 2, 3, 4, 5 is the input sequence of a stack, sequence 4, 5, 3, ...

Posted on Mon, 14 Oct 2019 08:07:21 -0700 by stargate03

Object Flow Implementing Order Processing

Use object flow to achieve the following effects: Demand: When shopping online, a user fills in an order, the content of which is a list of products, which is stored in the "order.bin" file. Runtime If the "order.bin" file does not exist, enter a new order If it exists, display an ...

Posted on Mon, 14 Oct 2019 08:01:46 -0700 by El Ornitorrico

Current Limiting Technology for High Concurrent Solution--Leaky Bucket Current Limiting

1. Leaky bucket algorithmLeaky Bucket Algorithms as a Meter can be used for Traffic Shaping and Traffic Policing. Leaky Bucket Algorithms are described as follows:A leaky bucket with a fixed capacity flows water droplets at a constant fixed rate.If the bucket is empty, there is no need to flow out water drops;Water droplets can flow into the le ...

Posted on Mon, 14 Oct 2019 08:00:15 -0700 by fuii_koh