Article Directory Table of Contents Article Table of Contents Text 1. Directly upload the code 2. Things to note 3. Test 4. Get Base64 code Text 1. Directly upload the code package com.review.demo.util; import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.util.Base64; import java.util.Random; public class ImageCodeCreate { /** * long */ […]
Tag: base64
SpringBoot3+Vue3+Mysql+Element Plus completes the database storage of blob type images, and the front end renders the base64 type images transmitted from the back end.
Foreword If your front-end and back-end separation project uses SpringBoot3 + Vue3 + Element Plus, and without OSS (object storage), use mysql to read and write images (may not be limited to images, to be tested). It took three days and after stepping on countless minefields, this function was finally completed. Presented to you. Complete […]
Base64 conversion image, image conversion Base64 example
1. The following is a complete code example. Convert the specified file path to binary Convert network images to binary Convert base64 to image resources package com.xxx.example.file; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import javax.imageio.ImageIO; import com.zxtc.syonline.support.common.StringUtil; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; public class ImageBioChangeUtil { […]
Java uses Base64 to implement encryption and decryption of user information, which is equivalent to token
Directory 1 question 2 implementation 1 Question The springboot project needs to implement encryption and decryption of users After the user logs in, the user information is encrypted and stored in a cookie. When the page is accessed later, the cookie is carried to other pages and then decrypted. As long as the cookie expires, […]
Handwritten signature on horizontal screen signature pad and rotated 90° to horizontal screen display base64
Handwritten signature and rotated 90° to horizontal screen display base64 base64 data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAApsAAAF3CAYAAADq/IAAAAAAAXNSR0IArs4c6QAAIABJREFUeF7t3W3MPlldH/CvwLK7wEKNoiABZLvYiBqIdJGnQlor9gVBaAtJmzQsoI2wgKD4hqVNmrD7ohWhPF RSIg + + aKO0XTS8AVLb4AIVtFnaSiMPSktxoyVVWFxAFmwOzCwXF/d9/6 + 5rjkzc2Y + V/LPfwkz55z5/M593d//PJz5tvgQIECAAAECBAgQqCTwbZXa1SwBAgQIECBAgACBCJsmAQECBAgQIECAQDUBYbMarY YJECBAgAABAgSETXOAAAECBAgQIECgmoCwWY1WwwQIECBAgAABAsKmOUCAAAECBAgQIFBNQNisRqthAgQIECBAgAABYdMcIECAAAECBAgQqCYgbFaj1TABAgQIECBAgICwaQ4QIECAAAECBAhUExA2q9FqmAABAgQIECBAQNg0BwgQIECAAAECBKo JCJvVaDVMgAABAgQIECAgbJoDBAgQIECAAAEC1QSEzWq0GiZAgAABAgQIEBA2zQECBAgQIECAAIFqAsJmNVoNEyBAgAABAgQICJvmAAECBAgQIECAQDUBYbMarYYJECBAgAABAgSETXOAAAECBAgQIECgmoCwWY1WwwQIECBAgAABAsKmOUCAAA ECBAgQIFBNQNisRqthAgQIECBAgAABYdMcIECAAAECBAgQqCYgbFaj1TABAgQIECBAgICwaQ4QIECAAAECBAhUExA2q9FqmAABAgQIECBAQNg0BwgQIECAAAECBKoJCJvVaDVMgAABAgQIECAgbJoDBAgQIECAAAEC1QSEzWq0GiZAgAABAgQ IEBA2zQECBAgQIECAAIFqAsJmNVoNEyBAgAABAgQICJvmAAECBAgQIECAQDUBYbMarYYJECBAgAABAgSETXOAAAECBAgQIECgmoCwWY1WwwQIECBAgAABAsKmOUCAAAECBAgQIFBNQNisRqthAgQIECBAgAABYdMcIECAAAECBAgQqCYgbFaj1TABAgQ IECBAgICwaQ4QIECAAAECBAhUExA2q9FqmAABAgQIECBAQNg0BwgQIECAAAECBKoJCJvVaDVMgAABAgQIECAgbJoDBAgQIECAAAEC1QSEzWq0GiZAgAABAgQIEBA2zQECBAgQIECAAIFqAsJmNVoNEyBAgAABAgQICJvmAAECBAgQIECAQDUb MarYYJECBAgAABAgSETXOAAAECBAgQIECgmoCwWY1WwwQIECBAgAABAsKmOUCAAAECBAgQIFBNQNisRqthAgQIECBAgAABYdMcIECAAAECBAgQqCYgbFaj1TABAgQIECBAgICwaQ4QIECAAAECBAhUExA2q9FqmAABAgQIECBAQNg0BwgQIECAAAE CBKoJCJvVaDVMgAABAgQIECAgbJoDBAgQIECAAAEC1QSEzWq0GiZAgAABAgQIEBA2zQECBAgQIECAAIFqAsJmNVoNEyBAgAABAgQICJvmAAECBAgQIECAQDUBYbMarYYJECBAgAABAgSETXOAAAECBAgQIECgmoCwWY1WwwQIECBAgAABAsKmOU CAAAECBAgQIFBNQNisRqthAgQIECBAgAABYdMcIECAAAECBAgQqCYgbFaj1TABAgQIECBAgICwaQ4QIECAAAECBAhUExA2q9FqmAABAgQIECBAQNg0BwgQIECAAAECBKoJCJvVaDVMgAABAgQIECAgbJoDBAgQIECAAAEC1QSEzWq0GiZAgAABA gQIEBA2zQECBAgQIECAAIFqAsJmNVoNEyBAgAABAgQICJvmAAECBAgQIECAQDUBYbMarYYJECBAgAABAgSETXOAAAECBAgQIECgmoCwWY0290hyXZLXJbnigm6 + mOQ1SX41ya31hqNlAgQIECBAgMD0AsLmuOafT3LvE5u8I8m1 ST5yYjt2J0CAAAECBAjMLiBsnlaCK5P8SJLHJnlckqftNVfOWr4oyduSfPmcrn44ybOS/MzOGdA7k7wyyY1Jyn/7ECBAgAABAgSaFBA2h5Xt6iSP74JlCZePTHK3vSZuT3LfYc3etXW59H5DklckX7sM/9k k35/ktiPbsxsBAgQIECBAYFYBYfNw/v + c5Ml7m381yX9L8oHuz/uTfOLwJs /d8lFJbukuyZezo492WX0E1a838cGupceM1qKGCBAgQIAAgXMFhM3DJ8dvJnlEF1b + Sxcuy99fOLyJQVs + IMnvd2dJXVYfRHfhxn/Z/b/m/nimWiJAgAABAsJmo3Pgsu6yerm07rL6OEUUNsdx1A oBAgQIEDhIwNmdg5hm32j3sno5k/pdScqT7z7DBYTN4Wb2IECAAAECRwsIm0fTTb5juaz + qe4MZznTedPkI1hHh8LmOuroKAgQIECgEQFhs5FCdcMsIbMsifSVJA/2lPpRxRM2j2KzEwECBAgQOE5A2D zOba697pPkM0ku7x5Mcjl9eCWEzeFm9iBAgAABAkcLCJtH0822o8vpp9ELm6f52ZsAAQIECAwSEDYHcS1m4/5yehlQeb3lNS6pH1wbYfNgKhsSIECAAIHTBYTN0w3naGH3cnrpvyz8Xl6d6XNpAWHz0ka2IECAAA ECowkIm6NRztJQuaTev8pSLQ8rgbB5mJOtCBAgQIDAKAICyiiMszbSh6errL15UB2EzYOYbESAAAECBMYREDbHcZyzlS9be3MQv7A5iMvGBAgQIEDgNAFh8zS/Jez98iQ3JinvTy + vt/S5WEDYXP8MeXeS + yZ57PoP1RESIEBg + QLC5vJrdKkRloeFbu82Us9LaSVfSnLPJD + Q5COX3twWDQqUV7pekeR + ST7X4PgNmQABAqsSEE7WUU5n6w6v479J8g […]
Encoding and decoding using BASE64
Directory of series articles SpringBoot integrates RabbitMQ and implements message sending and receiving Parse JSON format parameters & modify the key of the object VUE integrates Echarts to achieve simple data visualization Using BigDecimal in Java to perform operations such as addition, subtraction, multiplication, and division on string values List＜HashMap＜String,String＞＞implement custom string sorting (key sorting, […]
CTF Learning Notes Base64
2023.10.22 Introduction to Base64 Base64 includes lowercase letters a-z, uppercase letters A-Z, numbers 0-9, symbols + and A 64-character character set consisting of /, which also includes the padding character =. Any symbol can be converted into characters in this character set. This conversion process is called Base64 encoding. Base64 implementation Base64 encoding requires converting […]
vue [SM2 (encryption-decryption | encryption, signature verification), SM4 (encryption-decryption), Base64 (encryption-decryption), MD5 encryption, RSA encryption/decryption, encryption/decryption]
1.SM2 1. Project root directory installation: SM2 component npm install –save sm-crypto 2. Encryption and decryption // Get SM2 object const sm2 = require(‘sm-crypto’).sm2; const cipherMode = 1 // 1 – C1C3C2, 0 – C1C2C3, default is 1 // public key var publicKeyServer = ‘xxxxxxxxxxx’; // private key var privateKeyWeb = ‘xxxxxxxx’; //If the encrypted […]
Thoroughly understand the encoding and decoding principles of base64
Background The encoding principle of base64 is explained more online, but the decoding principle is less explained, and the internal implementation principle is not analyzed. If you want to thoroughly understand the encoding and decoding principles of base64, please read this article patiently, and you will definitely gain something. Involving the concepts of algorithms and […]
RuoYi SpringBoot framework interface data encryption (base64) transmission (separated version before and after)
Realize data encryption and decryption based on all interfaces of Ruoyi (separated version of front-end and back-end). Technology adopts Filter + HttpServletRequestWrapper + HttpServletResponseWrapper + base64 1. Front-end encryption and decryption 1.1 vue introduces open source base64 1. Download dependencies $ npm install –save js-base64 2. How to use: import {Base64} from ‘js-base64’ Base64.encode(‘hellow world’); […]