R20:客观题分值口径 + 大题一位小数评分 + 页面刷新修复 + 大题导出 Word
A1/A2 客观题:
- 清理题库占位题(答案恒 A/true、分值恒 5),客观题分值硬约束为 1 分
- 新增 scripts/check_question_bank_health.py(带变异注入自检,已验证判别力)
- ci-gates.sh 由 9 步扩为 10 步,纳入题库健康门禁
B 大题评分一位小数:
- 新增 app/lib/decimal_score.js:DECIMAL(6,1) + getter 兜底,单点收口
「DB 列 / model 声明 / dialectOptions.decimalNumbers」三处必须同时成立
- 10 个 model 的 score 字段改走该工厂
- database/migrations/025:17 列 INT → DECIMAL(6,1)(6 列题目分值保持 int)
- service/bigQuestion.js:setSubScores 用 Math.round(n*10)/10 收敛,不再抹成整数
C 页面状态刷新:
- 修复 onQuestionTypeChange 的 `bigQuestions.length === 0` 守卫(切组后旧数组仍非空
⇒ 永不重新拉取)
- 修复评分后只刷一半(saveBigScores / saveExamScore 各只刷一侧列表)
- 收敛为唯一刷新入口 refreshQuestionData();ensureBigData 改按「数据属于哪个组」
判定;fetchBigQuestions/fetchBigAnswers 增加组别竞态守卫
D 大题导出 Word(单题 / 批量 / 全部):
- 新增 app/lib/docx.js:零新依赖手写 OOXML(复用已有 archiver@8),支持 p/strong/
span/a/br/table/ul-ol 子集,具名捕获组词法解析,pPr 严格排在 runs 之前
- service.bigQuestion.exportQuestions + controller.exportBigQuestions +
GET /api/admin/big-questions/:group/export
- 前端导出选中/全部两按钮 + 表格多选(reserve-selection)
计划外发现并修复(已在报告中披露):
- 管理端跨组写分越权:setSubScores 定位作答行时缺 group 约束,可用任意组的路径
改写他组考生成绩(读写不对称:读取侧有 where:{group},写入侧没有)
⇒ 已补 group 约束,并区分「不属于本组」与「尚未抽题」两种文案
- 导出路由注册顺序:export 原注册在 :group/:id 之后(当时因后者仅 PUT/DELETE 而
未暴露问题),已前移以消除「将来新增 GET /:group/:id 会吞掉 export」的隐患
验证(全部实测,非仅看退出码):
- ci-gates.sh 10/10 全绿;四连门禁 52/0 · 22/0 · 20/0 · 46/0
- 端到端探针 probe_d_03(导出+小数)ALL PASS;probe_e_01(切组刷新)22/22 ALL PASS
- 前端构建 VITE_EXIT=0
未 push:须先上线验证通过再单独授权。
This commit is contained in:
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app/lib/docx.js
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469
app/lib/docx.js
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'use strict';
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/**
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* 极简 WordprocessingML(.docx) 生成器(2026-09-23)
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*
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* 用途:把综合大题(`big_questions`)导出为**真正的 .docx**,供管理员留存 / 打印 / 分发。
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*
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* 为什么不用第三方 docx 库:后端已有 `archiver`(service/admin.js 的批量下载在用),
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* 而 .docx 本质就是一个 ZIP + 几个 XML part ⇒ 直接手写 OOXML,**新增零依赖**、
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* 也避免引入未经验证的库影响既有交卷链路。
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*
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* 生成的包结构(最小合法 OOXML):
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* [Content_Types].xml
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* _rels/.rels
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* word/document.xml
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* word/styles.xml
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* word/_rels/document.xml.rels
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*
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* 支持的 HTML 子集(实测题干只用到这些:p / table / tbody / tr / td / strong / span / a / br):
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* 块级:p、div、h1–h6、li、ul/ol、blockquote、pre、hr
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* 表格:table(含 tbody/thead/tfoot 包裹)、tr、td/th(th 加粗)
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* 行内:strong/b(加粗)、em/i(斜体)、u、span、a(只取文字)、br
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* 样式:仅解析 `text-align`(对齐)与 `text-indent`(首行缩进,pt→twips)
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* 实体: < > & " ' '
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* 忽略:script / style / img(图片不外链,避免生成"打不开的图片占位")
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*
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* ⛔ 已知取舍:嵌套表格会被扁平化;图片不导出。
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*/
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// ==================== XML / 实体 ====================
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function decodeEntities(str) {
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return String(str == null ? '' : str)
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.replace(/ /gi, ' ')
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.replace(/</gi, '<')
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.replace(/>/gi, '>')
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.replace(/"/gi, '"')
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.replace(/�*39;/g, "'")
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.replace(/'/gi, "'")
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.replace(/&#(\d+);/g, (m, d) => {
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const code = Number(d);
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return Number.isFinite(code) && code > 0 && code < 0x110000 ? String.fromCodePoint(code) : m;
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})
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// ⚠️ & 必须放最后:否则 `&lt;` 会被二次解码成 `<`
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.replace(/&/gi, '&');
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}
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/** XML 文本转义(在 decodeEntities 之后调用,顺序不可颠倒) */
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function esc(str) {
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return String(str == null ? '' : str)
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.replace(/&/g, '&')
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.replace(/</g, '<')
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.replace(/>/g, '>')
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.replace(/"/g, '"');
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}
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// ==================== 极简 HTML 解析(容错栈式) ====================
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const VOID_TAGS = new Set(['br', 'hr', 'img', 'meta', 'link', 'input', 'col', 'area', 'base', 'source', 'wbr']);
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/**
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* 词法正则。
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* ⚠️ 必须用**具名捕获组**:早期版本用「按出现顺序数下标」(m[1]..m[8]),
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* 但多个 `|` 分支各自贡献捕获组,实际只有 5 组 ⇒ 下标全部错位 ⇒
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* 所有标签被当成文本、块序列恒为空(静默产出空文档,无任何报错)。
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* 具名组不受分支数量影响,从根上消除这类错位。
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*/
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const TOKEN_RE = /<!--[\s\S]*?-->|<![^>]*>|<\?[\s\S]*?\?>|<\/\s*(?<close>[a-zA-Z][a-zA-Z0-9:-]*)\s*>|<(?<open>[a-zA-Z][a-zA-Z0-9:-]*)(?<attrs>(?:"[^"]*"|'[^']*'|[^>"'])*?)(?<self>\/?)>|(?<text>[^<]+)/g;
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const ATTR_RE = /([a-zA-Z_:][-a-zA-Z0-9_:.]*)\s*=\s*(?:"([^"]*)"|'([^']*)'|([^\s"'>]+))/g;
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function parseAttrs(raw) {
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const attrs = {};
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if (!raw) return attrs;
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ATTR_RE.lastIndex = 0;
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let m;
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while ((m = ATTR_RE.exec(raw))) {
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attrs[m[1].toLowerCase()] = m[2] !== undefined ? m[2] : (m[3] !== undefined ? m[3] : m[4]);
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}
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return attrs;
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}
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/**
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* 把 HTML 片段解析为节点树。
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* ⛔ 容错优先:标签不闭合 / 交叉嵌套时按栈就近回退,绝不抛异常
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* (题干是管理员手工粘贴的富文本,脏 HTML 不能导致整次导出失败)。
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*/
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function parseHtml(html) {
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const root = { type: 'node', tag: '#root', attrs: {}, children: [] };
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const stack = [root];
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const src = String(html == null ? '' : html);
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TOKEN_RE.lastIndex = 0;
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let m;
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while ((m = TOKEN_RE.exec(src))) {
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const g = m.groups || {};
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if (g.text !== undefined) {
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stack[stack.length - 1].children.push({ type: 'text', value: g.text });
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continue;
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}
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if (g.close !== undefined) {
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// 闭标签:从栈顶向下找同名节点;找不到就忽略(脏 HTML 不抛异常)
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const name = g.close.toLowerCase();
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for (let i = stack.length - 1; i > 0; i--) {
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if (stack[i].tag === name) {
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stack.length = i;
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break;
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}
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}
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continue;
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}
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if (g.open !== undefined) {
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const tag = g.open.toLowerCase();
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const node = { type: 'node', tag, attrs: parseAttrs(g.attrs), children: [] };
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stack[stack.length - 1].children.push(node);
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if (!VOID_TAGS.has(tag) && g.self !== '/') stack.push(node);
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continue;
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}
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// 注释 / doctype / 处理指令:忽略
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}
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return root;
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}
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// ==================== 节点树 → 中间块序列 ====================
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const BLOCK_TAGS = new Set([
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'p', 'div', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'li', 'ul', 'ol',
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'blockquote', 'pre', 'section', 'article', 'hr', 'dl', 'dt', 'dd',
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]);
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const SKIP_TAGS = new Set(['script', 'style', 'head', 'meta', 'link', 'title', 'img']);
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/** 标题级别 → 半磅字号(21 半磅 = 10.5pt = 五号,正文基准) */
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const HEADING_SIZE = { h1: 32, h2: 28, h3: 26, h4: 24, h5: 22, h6: 21 };
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const HEADING_BOLD = new Set(['h1', 'h2', 'h3', 'h4', 'h5', 'h6']);
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const INLINE_BOLD = new Set(['strong', 'b', 'th']);
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const INLINE_ITALIC = new Set(['em', 'i']);
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function styleOf(node) {
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return (node && node.attrs && node.attrs.style) || '';
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}
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/** 从 style 里取段落对齐(仅映射 Word 支持的四种) */
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function alignOf(node) {
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const s = styleOf(node);
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const m = /text-align\s*:\s*(left|right|center|justify)/i.exec(s);
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return m ? m[1].toLowerCase() : '';
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}
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/** 从 style 里取首行缩进(pt → twips,1pt = 20twips) */
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function firstLineTwips(node) {
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const s = styleOf(node);
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const m = /text-indent\s*:\s*(-?\d+(?:\.\d+)?)\s*pt/i.exec(s);
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if (!m) return 0;
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const pt = Number(m[1]);
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return Number.isFinite(pt) && pt > 0 ? Math.round(pt * 20) : 0;
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}
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/**
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* 深度优先遍历,产出「块」序列:
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* { type:'p', runs:[...], align, firstLine }
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* { type:'table', rows:[{ cells:[{ blocks:[...] }] }] }
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* run 形态:{ text, bold, italic } 或 { br: true }
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*/
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function walk(nodes, fmt, out) {
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const flush = () => {
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if (out.cur.length) {
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out.blocks.push(Object.assign({ type: 'p', runs: out.cur }, out.curMeta));
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out.cur = [];
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out.curMeta = {};
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}
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};
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for (const n of nodes) {
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if (n.type === 'text') {
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// HTML 源码里的换行/缩进属排版噪声,须丢弃;
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// 但 ` ` 是作者有意的占位空格(题干排版大量使用),必须保留 ⇒ 用原始值判别
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if (!/\S/.test(n.value) && !/ /i.test(n.value)) continue;
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// 原始换行/制表压成单空格:真实换行只由 <br> 与段落边界产生
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const text = decodeEntities(n.value).replace(/[\r\n\t]+/g, ' ');
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if (text === '') continue;
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out.cur.push({ text, bold: !!fmt.bold, italic: !!fmt.italic });
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continue;
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}
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const tag = n.tag;
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if (SKIP_TAGS.has(tag)) continue;
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if (tag === 'br') {
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out.cur.push({ br: true });
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continue;
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}
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if (tag === 'table') {
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flush();
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out.blocks.push({ type: 'table', rows: extractRows(n) });
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continue;
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}
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if (tag === 'hr') {
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flush();
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out.blocks.push({ type: 'p', runs: [] });
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continue;
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}
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if (tag === 'li') {
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flush();
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out.curMeta = Object.assign({}, out.curMeta, { align: alignOf(n) || out.curMeta.align, firstLine: 0 });
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out.cur.push({ text: '• ', bold: false, italic: false });
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walk(n.children, fmt, out);
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// 若不 flush,下一条 li 会并入同一段 ⇒ 显式收尾
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const last = out.blocks[out.blocks.length - 1];
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if (last && last.type === 'p' && last.runs.length && last.runs[0].text === '• ') flush();
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continue;
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}
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if (BLOCK_TAGS.has(tag)) {
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flush();
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const nextFmt = HEADING_BOLD.has(tag)
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? Object.assign({}, fmt, { bold: true, size: HEADING_SIZE[tag] })
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: fmt;
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out.curMeta = { align: alignOf(n), firstLine: firstLineTwips(n) };
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walk(n.children, nextFmt, out);
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flush();
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continue;
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}
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// 行内标签
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const nextFmt = Object.assign({}, fmt);
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if (INLINE_BOLD.has(tag)) nextFmt.bold = true;
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if (INLINE_ITALIC.has(tag)) nextFmt.italic = true;
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walk(n.children, nextFmt, out);
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}
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flush();
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}
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/** 提取表格行/单元格(容忍 tbody / thead / tfoot 包裹;嵌套表格扁平化到单元格文本) */
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function extractRows(tableNode) {
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const rows = [];
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const collect = (nodes) => {
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for (const n of nodes) {
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if (n.type !== 'node') continue;
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if (n.tag === 'tr') {
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const cells = [];
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for (const c of n.children) {
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if (c.type !== 'node') continue;
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if (c.tag !== 'td' && c.tag !== 'th') continue;
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const cellOut = { blocks: [], cur: [], curMeta: {} };
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walk(c.children, { bold: c.tag === 'th', italic: false }, cellOut);
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cells.push({ blocks: cellOut.blocks, header: c.tag === 'th' });
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}
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rows.push({ cells });
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} else if (n.tag === 'tbody' || n.tag === 'thead' || n.tag === 'tfoot' || n.tag === 'table') {
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collect(n.children);
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}
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}
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};
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collect(tableNode.children);
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return rows;
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}
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/** HTML → 块序列(对外唯一入口) */
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function htmlToBlocks(html) {
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const out = { blocks: [], cur: [], curMeta: {} };
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walk(parseHtml(html).children, { bold: false, italic: false }, out);
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return out.blocks;
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}
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/** 纯文本 → 单块(自动按空行/换行切段) */
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function textToBlocks(text) {
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const s = String(text == null ? '' : text);
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if (!s.trim()) return [];
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return s
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.split(/\r?\n/)
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.map(line => line.trim())
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.filter(line => line !== '')
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.map(line => ({ type: 'p', runs: [{ text: line, bold: false, italic: false }] }));
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}
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// ==================== 块 → WordprocessingML ====================
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const W_NS = 'http://schemas.openxmlformats.org/wordprocessingml/2006/main';
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function rPrOf(run) {
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const parts = [];
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if (run.bold) parts.push('<w:b/><w:bCs/>');
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if (run.italic) parts.push('<w:i/><w:iCs/>');
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parts.push('<w:rFonts w:ascii="Times New Roman" w:hAnsi="Times New Roman" w:eastAsia="宋体" w:cs="Times New Roman"/>');
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const sz = Number(run.size) > 0 ? Number(run.size) : 21;
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parts.push(`<w:sz w:val="${sz}"/><w:szCs w:val="${sz}"/>`);
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return `<w:rPr>${parts.join('')}</w:rPr>`;
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}
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function renderRun(run) {
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if (run.br) return '<w:r><w:br/></w:r>';
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const text = String(run.text == null ? '' : run.text);
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if (text === '') return '';
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return `<w:r>${rPrOf(run)}<w:t xml:space="preserve">${esc(text)}</w:t></w:r>`;
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}
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function pPrOf(block, extra) {
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const parts = [];
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const align = block.align || '';
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if (align) parts.push(`<w:jc w:val="${align === 'justify' ? 'both' : align}"/>`);
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const fl = Number(block.firstLine) > 0 ? Number(block.firstLine) : 0;
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if (fl) parts.push(`<w:ind w:firstLine="${fl}"/>`);
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if (extra) parts.push(extra);
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return parts.length ? `<w:pPr>${parts.join('')}</w:pPr>` : '';
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}
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/** 段落。⛔ Word 要求 pPr 必须排在 runs 之前(顺序颠倒会导致文档被判损坏) */
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function renderParagraph(block) {
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const runs = (block.runs || []).map(renderRun).join('');
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return `<w:p>${pPrOf(block)}${runs}</w:p>`;
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}
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const TBL_BORDERS = '<w:tblBorders>'
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+ ['top', 'left', 'bottom', 'right', 'insideH', 'insideV']
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.map(side => `<w:${side} w:val="single" w:sz="4" w:space="0" w:color="auto"/>`)
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.join('')
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+ '</w:tblBorders>';
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function renderTable(block) {
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const rows = block.rows || [];
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if (!rows.length) return '';
|
||||
const cellCount = Math.max(...rows.map(r => r.cells.length), 1);
|
||||
const trs = rows.map(r => {
|
||||
const tcs = [];
|
||||
for (let i = 0; i < cellCount; i++) {
|
||||
const cell = r.cells[i];
|
||||
let inner;
|
||||
if (!cell || !cell.blocks.length) {
|
||||
inner = '<w:p/>';
|
||||
} else {
|
||||
inner = cell.blocks.map(b => (b.type === 'table'
|
||||
// 嵌套表扁平化为文本,避免非法嵌套
|
||||
? renderParagraph({ runs: flattenTableText(b) })
|
||||
: renderParagraph(b))).join('');
|
||||
}
|
||||
tcs.push(`<w:tc><w:tcPr><w:tcW w:w="0" w:type="auto"/></w:tcPr>${inner}</w:tc>`);
|
||||
}
|
||||
return `<w:tr>${tcs.join('')}</w:tr>`;
|
||||
}).join('');
|
||||
return `<w:tbl><w:tblPr><w:tblW w:w="0" w:type="auto"/>${TBL_BORDERS}</w:tblPr>${trs}</w:tbl>`;
|
||||
}
|
||||
|
||||
function flattenTableText(tableBlock) {
|
||||
const buf = [];
|
||||
for (const r of tableBlock.rows || []) {
|
||||
const cells = [];
|
||||
for (const c of r.cells || []) {
|
||||
const texts = [];
|
||||
for (const b of c.blocks || []) {
|
||||
if (b.type === 'p') texts.push((b.runs || []).map(x => (x.br ? ' ' : x.text)).join(''));
|
||||
}
|
||||
cells.push(texts.join(' ').trim());
|
||||
}
|
||||
buf.push({ br: false, text: cells.join(' | ') });
|
||||
}
|
||||
const runs = [];
|
||||
buf.forEach((x, i) => {
|
||||
if (i > 0) runs.push({ br: true });
|
||||
runs.push({ text: x.text, bold: false, italic: false });
|
||||
});
|
||||
return runs;
|
||||
}
|
||||
|
||||
function buildDocumentXml(blocks) {
|
||||
const parts = [];
|
||||
for (const b of blocks) {
|
||||
if (b.type === 'table') {
|
||||
const t = renderTable(b);
|
||||
if (t) {
|
||||
parts.push(t);
|
||||
// 表后补空段:Word 中「表格紧邻表格/节尾」易被判异常
|
||||
parts.push('<w:p/>');
|
||||
}
|
||||
} else {
|
||||
parts.push(renderParagraph(b));
|
||||
}
|
||||
}
|
||||
if (!parts.length) parts.push('<w:p/>');
|
||||
parts.push('<w:sectPr><w:pgSz w:w="11906" w:h="16838"/><w:pgMar w:top="1440" w:right="1440" w:bottom="1440" w:left="1440" w:header="851" w:footer="992" w:gutter="0"/></w:sectPr>');
|
||||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
|
||||
+ `<w:document xmlns:w="${W_NS}" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">`
|
||||
+ `<w:body>${parts.join('')}</w:body></w:document>`;
|
||||
}
|
||||
|
||||
// ==================== 打包为 .docx ====================
|
||||
|
||||
const CONTENT_TYPES = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
|
||||
+ '<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">'
|
||||
+ '<Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>'
|
||||
+ '<Default Extension="xml" ContentType="application/xml"/>'
|
||||
+ '<Override PartName="/word/document.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.document.main+xml"/>'
|
||||
+ '<Override PartName="/word/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.styles+xml"/>'
|
||||
+ '</Types>';
|
||||
|
||||
const ROOT_RELS = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
|
||||
+ '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">'
|
||||
+ '<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="word/document.xml"/>'
|
||||
+ '</Relationships>';
|
||||
|
||||
const DOC_RELS = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
|
||||
+ '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">'
|
||||
+ '<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/>'
|
||||
+ '</Relationships>';
|
||||
|
||||
const STYLES_XML = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
|
||||
+ `<w:styles xmlns:w="${W_NS}">`
|
||||
+ '<w:docDefaults><w:rPrDefault><w:rPr>'
|
||||
+ '<w:rFonts w:ascii="Times New Roman" w:hAnsi="Times New Roman" w:eastAsia="宋体" w:cs="Times New Roman"/>'
|
||||
+ '<w:sz w:val="21"/><w:szCs w:val="21"/>'
|
||||
+ '</w:rPr></w:rPrDefault></w:docDefaults>'
|
||||
+ '<w:style w:type="paragraph" w:default="1" w:styleId="Normal"><w:name w:val="Normal"/><w:qFormat/></w:style>'
|
||||
+ '</w:styles>';
|
||||
|
||||
/**
|
||||
* 把若干 part 打成一个 ZIP Buffer。
|
||||
* ⚠️ archiver v8 为 ESM:沿用 service/admin.js:754 已验证的 `const { ZipArchive } = require('archiver')` 写法。
|
||||
*/
|
||||
function zipParts(parts) {
|
||||
return new Promise((resolve, reject) => {
|
||||
let ZipArchive;
|
||||
try {
|
||||
({ ZipArchive } = require('archiver'));
|
||||
} catch (e) {
|
||||
reject(new Error('缺少 archiver 依赖,无法生成 .docx'));
|
||||
return;
|
||||
}
|
||||
const chunks = [];
|
||||
const archive = new ZipArchive({ zlib: { level: 9 } });
|
||||
archive.on('error', reject);
|
||||
archive.on('data', c => chunks.push(c));
|
||||
archive.on('end', () => resolve(Buffer.concat(chunks)));
|
||||
for (const p of parts) archive.append(Buffer.from(p.data, 'utf8'), { name: p.name });
|
||||
archive.finalize();
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* 生成单个 .docx
|
||||
* @param {Array} blocks - htmlToBlocks / textToBlocks 的产物(可多个数组按顺序拼接)
|
||||
* @returns {Promise<Buffer>}
|
||||
*/
|
||||
async function buildDocx(blocks) {
|
||||
const list = ([]).concat(blocks || []).filter(Boolean);
|
||||
const flat = [];
|
||||
for (const b of list) {
|
||||
if (Array.isArray(b)) flat.push(...b);
|
||||
else flat.push(b);
|
||||
}
|
||||
return zipParts([
|
||||
{ name: '[Content_Types].xml', data: CONTENT_TYPES },
|
||||
{ name: '_rels/.rels', data: ROOT_RELS },
|
||||
{ name: 'word/document.xml', data: buildDocumentXml(flat) },
|
||||
{ name: 'word/styles.xml', data: STYLES_XML },
|
||||
{ name: 'word/_rels/document.xml.rels', data: DOC_RELS },
|
||||
]);
|
||||
}
|
||||
|
||||
/** 把多个 .docx 打成一个 ZIP(批量/全部导出用),返回 Buffer */
|
||||
async function zipDocxFiles(entries) {
|
||||
return zipParts(entries.map(e => ({ name: e.name, data: e.buffer })));
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
buildDocx,
|
||||
zipDocxFiles,
|
||||
htmlToBlocks,
|
||||
textToBlocks,
|
||||
decodeEntities,
|
||||
esc,
|
||||
// 导出内部件便于单测
|
||||
_internal: { parseHtml, buildDocumentXml, CONTENT_TYPES, ROOT_RELS, STYLES_XML, DOC_RELS },
|
||||
};
|
||||
Reference in New Issue
Block a user