You can use the cryptography library to generate a pair of RSA keys and save the public and private keys as .pem files respectively. Here is a sample code: from cryptography.hazmat.backends import default_backend from cryptography.hazmat.primitives import serialization from cryptography.hazmat.primitives.asymmetric import rsa # Generate RSA key pair private_key = rsa.generate_private_key( public_exponent=65537, key_size=2048, backend=default_backend() ) # Get […]
Tag: generated
RESTful web service based on JAX-WS returns xml document generated through JAXB annotations
A RESTful web service written based on JAX-WS that returns xml documents. This xml document can be generated based on JAXB annotations, simplifying xml generation. In order to use the dependent libraries, you can add the following dependencies in the pom.xml file of the maven project: <dependency> <groupId>jakarta.xml.ws</groupId> <artifactId>jakarta.xml.ws-api</artifactId> <version>4.0.0</version> </dependency> <dependency> <groupId>com.sun.xml.ws</groupId> <artifactId>jaxws-rt</artifactId> <version>4.0.0</version> […]
Use Java and C language to implement the number guessing game (numbers are randomly generated)
Table of Contents 1. Java implementation 1. Content introduction 2. Ideas 3. Complete code 2. C language implementation 1. Ideas 2. Complete code 3. Summary 1. Generate random numbers 2. Branch structure 1. Java implementation 1. Content introduction (1) After the program runs, we are reminded to enter a number. The guessed number is controlled […]
Java tens of millions of data export generated file demo
com.xxx.common.excel.filereader; import java.io.BufferedWriter; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.text.NumberFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.Iterator; import java.util.List; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class CreateFileUtil { public static void main(String[] args) { //Generating 1 million pieces of data takes a very short time List<Object[]> […]
When lombok and mapstruct are used at the same time; the get and set methods of the pojo class fail to be generated, and the implementation class of mapstruct fails to be generated. It is just a new object.
Project scenario: When lombok and mapstruct are used at the same time; the get and set methods of the pojo class fail to be generated, and the implementation class of mapstruct fails to be generated. It is just a new object. Project related background: In recent work, I have been converting objects related to DTO, […]
Types of image data noise and corresponding noise generated by Python
Foreword When it comes to image processing and computer vision tasks, noise is a factor that cannot be ignored. Noise can be caused by a variety of factors, such as sensor errors, communication interference, ambient light changes, etc. These noises will cause image quality to degrade, thus affecting subsequent image analysis and processing. Therefore, for […]
The use of javassist, and the simple implementation of the GenerateDaoProxy mechanism (getMapper method) in MyBatis using javassist
The use of javassist, and the simple implementation of the GenerateDaoProxy mechanism in MyBatis using javassist 1. What is javassist? 2. Simply use javassist: here we only consider simple implementation classes through interfaces 3. Provide tool classes for SqlSession 4. Dynamically generate a simple Dao implementation class: 1. What is javassist? Javaassist is a class […]
1024 Special Clip: Drawing a randomly generated tree using the Python Turtle library
Personal homepage::?Beginner level cow? Highly recommended high-quality column: The world of C++ (continuously updated) Recommended column 1: C language beginners Recommended Column 2: C Language Advanced Personal creed: Unity of knowing and doing Introduction to this article:>: Use the Python Turtle library to draw a randomly generated tree Share golden quotes: ?1024 Happy Programmer’s Day! […]
Convert the Boolean judgment expression into a conditional Javabean (the conditional structure can theoretically iterate through countless levels), and use it to judge the Boolean result finally generated by the form submission parameters.
Without further ado, let’s get into the code. The code format is wrong, and for some reason, it can only be copied bit by bit. public List<ActBPMNSequenceFlowConditionExpression> parseConditionExpressionToList(String conditionExpressionStr, Boolean ifJustExtra) { //1. Initialize variables //1.1 The aggregated conditional expression of the current flow direction to be finally returned List<ActBPMNSequenceFlowConditionExpression> conditionExpressions = new ArrayList<>(); //1.2 […]
osg realizes the movement of objects along the Cardinal spline trajectory curve generated by control points.
Table of Contents 1 Introduction 2. Preliminary knowledge 3. Use osg to implement three-dimensional Cardinal curve 3.1. Tools/Materials 3.2. Code implementation 4. Description 1. Preface When designing vector patterns, we often need to use curves to express the shape of objects. Simply drawing with mouse tracks is obviously insufficient. So we hope to implement such […]