通过直接调用官方API获取数据，并修正任务调度逻辑，确保所有课程都能被正确查询。
// ==UserScript==
// @name 北京航空航天大学（北航）研究生选课人数显示
// @namespace http://tampermonkey.net/
// @version 2.0
// @description 通过直接调用官方API获取数据，并修正任务调度逻辑，确保所有课程都能被正确查询。
// @author 理亏亏
// @match https://yjsxk.buaa.edu.cn/yjsxkapp/sys/xsxkappbuaa/course.html
// @grant GM_addStyle
// @grant GM_xmlhttpRequest
// @run-at document-idle
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @license MIT
// ==/UserScript==
(function() {
'use strict';
GM_addStyle(`
.course-info-display { margin-left: 10px; font-weight: bold; font-size: 0.9em; white-space: nowrap; }
.course-info-display.error { color: red; }
.course-info-display.success { color: green; }
.course-info-display.loading { color: gray; }
`);
const API_BASE_URL = 'https://yjsxk.buaa.edu.cn/yjsxkapp/sys/xsxkappbuaa/xsxkCourse/loadAllCourseInfo.do';
let currentSemesterId = '20251';
const semesterInput = document.querySelector('input[name="xnxq"]#xnxq');
if (semesterInput && semesterInput.value) {
currentSemesterId = semesterInput.value;
console.log(`成功动态获取到当前学期ID: ${currentSemesterId}`);
} else {
console.warn(`未能动态获取当前学期ID，将使用后备值: ${currentSemesterId}`);
}
const courseQuerier = {
taskQueue: [],
isWorking: false,
// ★ 修复点 1: 移除 this.start()
addTask(courseCode, fullCourseName, linkElement) {
this.taskQueue.push({ courseCode, fullCourseName, linkElement });
displayCourseInfo(linkElement, '排队中...', '', false, true);
// this.start(); // <-- 移除这一行
},
async start() {
if (this.isWorking || this.taskQueue.length === 0) return;
this.isWorking = true;
const tasks = [...this.taskQueue];
this.taskQueue = [];
await Promise.all(tasks.map(async (task) => {
displayCourseInfo(task.linkElement, '查询中...', '', false, true);
const { capacity, selected } = await this.queryWithAPI(task);
setTimeout(() => {
const isQueryError = selected.includes('失败') || selected.includes('出错') || selected.includes('匹配');
displayCourseInfo(task.linkElement, capacity, selected, isQueryError);
}, 0);
}));
console.log("所有查询任务已完成。");
this.isWorking = false;
},
queryWithAPI(task) {
const { courseCode, fullCourseName } = task;
const logPrefix = `[${fullCourseName}]`;
return new Promise((resolve) => {
const apiUrl = `${API_BASE_URL}?_=${Date.now()}`;
const formData = new URLSearchParams();
formData.append('query_keyword', courseCode);
formData.append('query_xnxq', currentSemesterId);
formData.append('query_kkyx', '');
formData.append('query_kksx', '');
formData.append('fixedAutoSubmitBug', '');
formData.append('query_jxsjhnkc', '0');
formData.append('query_jxsfankc', '0');
formData.append('pageIndex', '1');
formData.append('pageSize', '20');
formData.append('sortField', '');
formData.append('sortOrder', '');
GM_xmlhttpRequest({
method: 'POST',
url: apiUrl,
headers: { "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8" },
data: formData.toString(),
timeout: 10000,
onload: function(response) {
try {
if (response.status !== 200) throw new Error(`HTTP状态码: ${response.status}`);
const result = JSON.parse(response.responseText);
const courses = result.datas || [];
for (const course of courses) {
const reconstructedFullName = `${course.KCDM}-${course.KCMC}（${course.BJMC}）`;
if (reconstructedFullName === fullCourseName) {
console.log(`成功精确匹配到课程 ${logPrefix} 的信息。`);
resolve({ capacity: course.KXRS, selected: `${course.YXXKJGRS}人` });
return;
}
}
console.warn(`API查询成功，但在结果中未精确匹配到课程 ${logPrefix}。`);
resolve({ capacity: 'N/A', selected: '未精确匹配' });
} catch (error) {
console.error(`解析课程 ${logPrefix} 的API响应失败:`, error, response.responseText);
resolve({ capacity: 'N/A', selected: '解析失败' });
}
},
onerror: function(error) {
console.error(`请求课程 ${logPrefix} 的API时发生网络错误:`, error);
resolve({ capacity: 'N/A', selected: '网络错误' });
},
ontimeout: function() {
console.error(`请求课程 ${logPrefix} 的API超时。`);
resolve({ capacity: 'N/A', selected: '请求超时' });
}
});
});
}
};
function displayCourseInfo(linkElement, capacity, selected, isError = false, isLoading = false) {
let infoSpan = linkElement.nextElementSibling;
if (!infoSpan || !infoSpan.classList.contains('course-info-display')) {
infoSpan = document.createElement('span');
infoSpan.classList.add('course-info-display');
linkElement.after(infoSpan);
}
infoSpan.classList.remove('error', 'success', 'loading');
if (isLoading) {
infoSpan.classList.add('loading');
infoSpan.innerText = ` (${capacity})`;
} else if (isError) {
infoSpan.classList.add('error');
infoSpan.innerText = ` (${selected})`;
} else {
infoSpan.classList.add('success');
infoSpan.innerText = ` (容量: ${capacity}, 已选: ${selected})`;
}
}
// ★ 修复点 2: 在循环结束后调用 start()
function processCourses() {
const courseLinks = document.querySelectorAll('td.yxkc a[role-kcdm]:not(.processed)');
if (courseLinks.length === 0) return;
console.log(`找到 ${courseLinks.length} 门新课程，添加到查询队列...`);
courseLinks.forEach(linkElement => {
linkElement.classList.add('processed');
const courseCode = linkElement.getAttribute('role-kcdm');
const fullCourseName = linkElement.innerText.trim();
if (courseCode && fullCourseName) {
courseQuerier.addTask(courseCode, fullCourseName, linkElement);
}
});
// 所有任务都添加完毕后，统一启动一次处理
courseQuerier.start();
}
function setupMutationObserver() {
const observer = new MutationObserver(processCourses);
observer.observe(document.body, { childList: true, subtree: true });
console.log("主页面 MutationObserver 已启动。");
}
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => {
processCourses();
setupMutationObserver();
});
} else {
processCourses();
setupMutationObserver();
}
})();