联大学堂高等学历继续教育网络学习平台，自动刷课答题考试，进入答题或课程页面，点击右上角红色“开始”按钮，即可自动刷课、答题、考试。
// ==UserScript==
// @name 联大学堂，自动刷课、答题、考试（OCR版）
// @namespace http://tampermonkey.net/
// @version 1.0.0
// @description 联大学堂高等学历继续教育网络学习平台，自动刷课答题考试，进入答题或课程页面，点击右上角红色“开始”按钮，即可自动刷课、答题、考试。
// @author 三年泪
// @match *://*.jxjypt.cn/classroom/start*
// @match *://*.jxjypt.cn/paper/start*
// @icon https://kc.jxjypt.cn/favicon.ico
// @grant none
// @license MIT
// @connect 127.0.0.1 // 允许连接到本地服务器
// ==/UserScript==
'use strict'
let timer = 0
const btn = document.createElement('button')
;(function () {
btn.id = 'start-btn'
btn.style.cssText = `
position: fixed;
z-index: 99999;
top: 0;
right: 0;
padding: 10px 50px;
background: red;
color: white;
cursor: pointer;
border: 2px solid white;
box-shadow: 0 0 10px #999;
`
btn.innerText = '开始'
btn.addEventListener('click', () => {
if (timer) {
clearInterval(timer)
timer = 0
btn.innerText = '开始'
} else {
btn.innerText = '暂停'
const path = location.pathname
if (path === '/classroom/start') {
// 视频课
doVideoCourse()
} else if (path === '/paper/start') {
// 课程作业或考试
doPaper()
} else {
btn.innerText = '开始'
}
}
})
document.body.appendChild(btn)
})()
/** 视频课 */
function doVideoCourse() {
const courseList = document.querySelectorAll('.course-l .course-list-txt')
const unplayedList = [] // 待做课程id
courseList.forEach(item => {
const sections = item.querySelectorAll('dd.z-gery-icon')
sections.forEach(section => {
const unplay = section.querySelector('.fa-youtube-play')
if (unplay) {
unplayedList.push(section.dataset.jieId)
}
})
})
// console.log(unplayedList)
function nextVideo() {
if (unplayedList.length < 1) {
clearInterval(timer)
alert('当前页面全部课程已完成')
btn.innerText = '开始'
return
}
const section = document.querySelector(
`dd[data-jie-id="${unplayedList[0]}"]`
)
section.parentElement.querySelector('dt.z-gery-icon').click()
section.click()
setTimeout(async () => {
const video = document
.querySelector('#video-content')
.querySelector('video')
if (video) {
video.play()
}
const question = document.querySelector('#question-area .m-question')
// console.log(question)
let pageCodeValue = document.getElementById('pagecode').value;
const qid = question.dataset.qid
const answer = await getPictureAnswerByQid(qid,pageCodeValue)
answer.forEach(a => {
document
.querySelector(`.m-question-option[data-value="${a}"]`)
.click()
})
unplayedList.shift()
setTimeout(window.submitSelf, 200)
console.log(`Done ${qid}, ${unplayedList.length} left`)
}, 1000)
}
setTimeout(nextVideo, 1000)
timer = setInterval(nextVideo, 1000 * 5)
}
/** 课程作业或考试 */
let qIndex = 0
function doPaper() {
const qList = document.querySelectorAll('#questionModule > ul > li')
timer = setInterval(async () => {
if (qIndex === qList.length) {
clearInterval(timer)
document.querySelector('#btn_submit').click()
btn.innerText = '开始'
return
}
const qid = qList[qIndex].querySelector(
`input[name="qid[${qIndex}]"]`
).value
const pqid = qList[qIndex].querySelector(
`input[name="pqid[${qIndex}]"]`
).value
const answer = await getAnswerByQid(pqid)
const options = qList[qIndex].querySelector('dl.sub-answer')
if (options) {
// 选择 判断题
answer.forEach(a => {
options.querySelector(`dd[data-value="${a}"]`).click()
})
} else {
// 填空 简答
qList[qIndex].querySelector('.mater-respond textarea').value = answer
}
qIndex++
console.log(`Done ${qid}, ${qList.length - qIndex} left`)
}, 1000)
}
async function getPictureAnswerByQid(qid, pageCode) {
// Wrap the entire asynchronous operation in a Promise
return new Promise(async (resolve, reject) => {
try {
const response = await fetch(`https://kc.jxjypt.cn/paper/question/resolve/chapter?pagecode=${pageCode}&qid=${qid}&ver=0&width=100`);
const imageBlob = await response.blob();
const reader = new FileReader();
reader.onloadend = async () => {
const base64String = reader.result;
console.log(base64String);
// Assuming setWhiteBackground is defined elsewhere and returns a Promise or is synchronous
const whiteBackgroundBase64 = await setWhiteBackground(imageBlob);
const ocrResponse = await fetch("http://127.0.0.1:1224/api/ocr", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
base64: whiteBackgroundBase64.split(",")[1]
}),
});
const ocrResult = await ocrResponse.json();
console.log(ocrResult);
if (ocrResult.code === 100 && ocrResult.data && ocrResult.data.length > 0) {
let fullText = "";
console.log("OCR 识别结果:");
ocrResult.data.forEach(line => {
fullText += line.text;
console.log(`文本: "${line.text}", 置信度: ${line.score}`);
});
console.log("完整识别文本:", fullText);
const match = fullText.match(/[ABCD]/);
if (match) {
const extractedLetter = match[0];
console.log("提取到的大写字母:", extractedLetter);
// Resolve the promise with the extracted letter as an array
resolve([extractedLetter]);
} else {
console.warn("未在 OCR 结果中找到大写字母 A、B、C 或 D。");
// Resolve with null or an empty array if no match is found, depending on desired behavior
resolve(null);
}
} else {
console.warn("OCR 识别失败或无数据:", ocrResult);
// Resolve with null or an empty array on OCR failure
resolve(null);
}
};
reader.onerror = (error) => {
console.error("读取 Blob 时出错:", error);
// Reject the promise if there's an error reading the Blob
reject(error);
};
reader.readAsDataURL(imageBlob);
} catch (error) {
console.error("在 getPictureAnswerByQid 函数中发生错误:", error);
// Catch any errors during the fetch or initial processing and reject the promise
reject(error);
}
});
}
/**
* 将一个透明底的 Base64 图片背景改为白色。
* @param {string} base64Image 原始的 Base64 图片字符串 (例如 "data:image/png;base64,...").
* @param {string} [backgroundColor='#FFFFFF'] 可选参数，要设置的背景颜色，默认为白色。
* @returns {Promise<string>} 返回一个 Promise，成功时 resolve 新的 Base64 字符串，失败时 reject 错误。
*/
function setWhiteBackground(base64Image, backgroundColor = '#FFFFFF') {
return new Promise((resolve, reject) => {
// 1. 创建一个 Image 对象
const img = new Image();
img.src = URL.createObjectURL(base64Image);
// 2. 设置 Image 对象的 onload 事件
img.onload = () => {
// 3. 创建一个 canvas 元素
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
// 4. 设置 canvas 的尺寸与图片一致
canvas.width = img.width;
canvas.height = img.height;
// 5. 在 canvas 上绘制背景色
// 这是关键步骤：先用指定颜色填充整个画布
ctx.fillStyle = backgroundColor;
ctx.fillRect(0, 0, canvas.width, canvas.height);
// 6. 将原始图片绘制到 canvas 上
// 由于图片是透明的，绘制上去后，透明部分会显示出下面已经铺好的白色背景
ctx.drawImage(img, 0, 0);
// 7. 从 canvas 中导出新的 Base64 图片
// toDataURL 默认导出为 'image/png' 格式
const newBase64 = canvas.toDataURL('image/png');
// 8. Promise 成功，返回新的 Base64
resolve(newBase64);
};
// 9. 设置 Image 对象的 onerror 事件
img.onerror = (err) => {
reject(err);
};
});
}
/** 获取答案 */
async function getAnswerByQid(qid) {
// https://kc.jxjypt.cn/paper/question/resolve/txt?uid=${uid}&pqid=${qid}
const uid = document.querySelector('#captchaId').value
const data = await fetch(`https://kc.jxjypt.cn/paper/question/resolve/txt?uid=${uid}&pqid=${qid}&_=${Date.now()}`)
const json = await data.json()
console.log('=========================================')
console.log(json)
const {rightAnswer, plainText} = json.data
let answer
if (plainText) {
// 填空 简答
answer = rightAnswer
} else {
if (rightAnswer == '错') {
// 判断题
answer = ['错误']
} else if (rightAnswer == '对') {
answer = ['正确']
} else {
// 选择题
answer = rightAnswer.trim().split('')
}
}
return answer
}