Tag: verify

Use Filter AND Interceptor to verify the records (the only one in the entire network, don’t miss this opportunity)

Description: Verification based on spring boot 1. Be familiar with how to use jwt token. (If you don’t know, read here: Let you experience the charm of JWTl token!!!-CSDN Blog) Shared files for Filter and Interceptor: (can be imitated, based on your actual situation) Controller layer code: /* * Copyright (c) 2020, 2023, All rights […]

[C++ code] Maximum binary tree, merging binary trees, searching in binary search trees, verifying binary search trees–Code Thoughts

Title: Maximum Binary Tree Given a non-repeating array of integers nums. Maximum binary tree can be constructed recursively from nums using the following algorithm: Creates a root node whose value is the maximum value in nums. Recursively build a left subtree on the subarray prefix to the left of the maximum value. Recursively build the […]

hibernate.validator.constraints.NotEmpty error when verifying request parameters java.lang.NoClassDefFoundError: javax/el/PropertyNot…

In the spring maven project, use hibernate validator to annotate the input parameter object of the formal verification method. hibernate-validator version: 5.0.2.Final validation-api version: 1.1.0.Final There is an attribute named order_time in the model class annotated with @NotEmpty: package com.emax.paycenter.dto.external; import org.hibernate.validator.constraints.NotEmpty; import org.hibernate.validator.constraints.URL; import javax.validation.constraints.Min; import javax.validation.constraints.NotNull; import java.io.Serializable; /** * Scan QR code […]

Write a C program, review concepts such as global constants, global variables, local variables, static variables, heap, and stack, and program and verify them in Ubuntu (x86) system and STM32 (Keil) respectively.

Table of Contents 1. Global variables and local variables 2. Heap & stack 3. Verify using programs 4. Summary 1. Global variables and local variables global variables Variables defined outside all functions are called global variables, and their scope is the entire program by default, that is, all source files. local variables A variable defined […]

Verify C memory allocation problem using STM2 and Ubuntu

Use STM2 and Ubuntu to verify C memory allocation issues Article directory Verify C memory allocation problem using STM2 and Ubuntu 1. Global variables and local variables 2. A brief introduction to C memory allocation 2.1 Stack area in STM2 2.2 Program memory allocation 2. Verify using programs 2.1 Verification program code 2.2 Ubuntu verification […]

Gcc generates static libraries and dynamic libraries as well as the generation and use of static .a and .so library files. And review concepts such as global constants, global variables, local variables, static variables, heaps, and stacks, and program and verify them in Ubuntu (x86) systems and STM32 (Keil) respectively.

1.gcc generates static libraries and dynamic libraries 1.1 What are static libraries and dynamic libraries Static libraries and dynamic libraries are library files stored on disk and contain functions, variables and other executable objects that can be called by programs. They are all the results of compilation and linking. However, there are several differences between […]

Verify and observe Activity life cycle [Intent jump]

Create a test project, verify and observe the Activity life cycle, and use Intent to jump between Activities: 1. Create the TestActivity project; 2. Create SecondActivity and corresponding layout; 3. Rewrite life cycle event methods such as onStart() and onResume() in MainActivity and SecondActivity, and use Log to output log information; 4. Write the onClick() […]

How to verify if a string is a URL in Go?

Foreword In the actual development process, sometimes I encounter URL verification problems. In fact, I also directly call the third-party library, but it also triggered a thought, what methods are there in the Go language to verify whether a string meets the URL format? ? URL stands for Unique Resource Locator and is a subtype […]

Public and private key asymmetric encryption Generate and verify JSON Web Token (JWT)

Preface These are the notes I compiled on this website. Follow me and I will continue to update them. Author: God’s children are singing Public and private key asymmetric encryption to generate and verify JSON Web Token What is JSON Web Token (JWT) Generate and verify JWT in Java program Code analysis What is JSON […]