获取B站视频页弹幕数据，并生成统计页面
目前為
// ==UserScript==
// @name bilibili 视频弹幕统计
// @namespace https://github.com/ZBpine/bili-danmaku-statistic
// @version 1.1.2
// @description 获取B站视频页弹幕数据，并生成统计页面
// @author ZBpine
// @icon https://i0.hdslb.com/bfs/static/jinkela/long/images/favicon.ico
// @match https://www.bilibili.com/video/*
// @match https://www.bilibili.com/list/watchlater*
// @grant none
// @license MIT
// @run-at document-end
// ==/UserScript==
(function () {
'use strict';
var biliCrc2Mid = function () {
/*
函数来源
https://github.com/shafferjohn/bilibili-search/blob/master/crc32.js
*/
const CRCPOLYNOMIAL = 0xEDB88320;
var startTime = new Date().getTime(),
crctable = new Array(256),
create_table = function () {
var crcreg,
i, j;
for (i = 0; i < 256; ++i) {
crcreg = i;
for (j = 0; j < 8; ++j) {
if ((crcreg & 1) != 0) {
crcreg = CRCPOLYNOMIAL ^ (crcreg >>> 1);
}
else {
crcreg >>>= 1;
}
}
crctable[i] = crcreg;
}
},
crc32 = function (input) {
if (typeof (input) != 'string')
input = input.toString();
var crcstart = 0xFFFFFFFF, len = input.length, index;
for (var i = 0; i < len; ++i) {
index = (crcstart ^ input.charCodeAt(i)) & 0xff;
crcstart = (crcstart >>> 8) ^ crctable[index];
}
return crcstart;
},
crc32lastindex = function (input) {
if (typeof (input) != 'string')
input = input.toString();
var crcstart = 0xFFFFFFFF, len = input.length, index;
for (var i = 0; i < len; ++i) {
index = (crcstart ^ input.charCodeAt(i)) & 0xff;
crcstart = (crcstart >>> 8) ^ crctable[index];
}
return index;
},
getcrcindex = function (t) {
//if(t>0)
//t-=256;
for (var i = 0; i < 256; i++) {
if (crctable[i] >>> 24 == t)
return i;
}
return -1;
},
deepCheck = function (i, index) {
var tc = 0x00, str = '',
hash = crc32(i);
tc = hash & 0xff ^ index[2];
if (!(tc <= 57 && tc >= 48))
return [0];
str += tc - 48;
hash = crctable[index[2]] ^ (hash >>> 8);
tc = hash & 0xff ^ index[1];
if (!(tc <= 57 && tc >= 48))
return [0];
str += tc - 48;
hash = crctable[index[1]] ^ (hash >>> 8);
tc = hash & 0xff ^ index[0];
if (!(tc <= 57 && tc >= 48))
return [0];
str += tc - 48;
hash = crctable[index[0]] ^ (hash >>> 8);
return [1, str];
};
create_table();
var index = new Array(4);
console.log('初始化耗时：' + (new Date().getTime() - startTime) + 'ms');
return function (input) {
var ht = parseInt('0x' + input) ^ 0xffffffff,
snum, i, lastindex, deepCheckData;
for (i = 3; i >= 0; i--) {
index[3 - i] = getcrcindex(ht >>> (i * 8));
snum = crctable[index[3 - i]];
ht ^= snum >>> ((3 - i) * 8);
}
for (i = 0; i < 100000000; i++) {
lastindex = crc32lastindex(i);
if (lastindex == index[3]) {
deepCheckData = deepCheck(i, index)
if (deepCheckData[0])
break;
}
}
if (i == 100000000)
return -1;
console.log('总耗时：' + (new Date().getTime() - startTime) + 'ms');
return i + '' + deepCheckData[1];
}
}
// 插入按钮
function insertButton() {
const btn = document.createElement('div');
btn.id = 'danmaku-stat-btn';
btn.innerHTML = `
<span class="label">弹幕统计</span>
<div class="icon-wrapper">
<svg t="1745985333201" class="icon" viewBox="0 0 1024 1024" version="1.1"
xmlns="http://www.w3.org/2000/svg" p-id="1486" width="24" height="24">
<path d="M691.2 928.2V543.1c0-32.7 26.5-59.3 59.2-59.3h118.5c32.7 0 59.3 26.5 59.3 59.2V928.2h-237z m192.6-385.1c0-8.2-6.6-14.8-14.8-14.8H750.5c-8.2 0-14.8 6.6-14.9 14.7v340.8h148.2V543.1zM395 157.8c-0.1-32.6 26.3-59.2 58.9-59.3h118.8c32.6 0 59.1 26.5 59.1 59.1v770.6H395V157.8z m44.4 725.9h148V157.9c0-8.1-6.5-14.7-14.7-14.8H454.1c-8.1 0.1-14.7 6.7-14.7 14.8v725.8zM98.6 394.9c0-32.7 26.5-59.2 59.2-59.3h118.5c32.7-0.1 59.3 26.4 59.3 59.1v533.5h-237V394.9z m44.5 488.8h148.2V394.9c0-8.2-6.7-14.8-14.8-14.8H158c-8.2 0-14.8 6.6-14.9 14.7v488.9z"
p-id="1487" fill="#00ace5"></path>
</svg>
</div>
`;
/*
图标来源
https://www.iconfont.cn/collections/detail?spm=a313x.user_detail.i1.dc64b3430.5d3b3a81zCorAg&cid=20644
*/
btn.style.position = 'fixed';
btn.style.left = '-100px'; // 露出约20px图标
btn.style.bottom = '40px';
btn.style.zIndex = '9997';
btn.style.width = '120px';
btn.style.height = '40px';
btn.style.backgroundColor = 'transparent';
btn.style.color = '#00ace5';
btn.style.borderRadius = '20px';
btn.style.cursor = 'pointer';
btn.style.fontSize = '16px';
btn.style.display = 'flex';
btn.style.alignItems = 'center';
btn.style.justifyContent = 'space-between';
btn.style.boxShadow = '0 0 5px rgba(0, 172, 229, 0.3)';
btn.style.transition = 'left 0.3s ease-in-out, background-color 0.2s ease-in-out';
btn.onmouseenter = () => {
btn.style.left = '10px';
btn.style.backgroundColor = 'rgba(255, 255, 255, 0.8)';
btn.style.border = '1px solid #00ace5';
};
btn.onmouseleave = () => {
btn.style.left = '-100px';
btn.style.backgroundColor = 'transparent';
btn.style.border = 'none';
};
btn.onclick = openIframe;
const style = document.createElement('style');
style.textContent = `
#danmaku-stat-btn .label {
margin-left: 20px;
white-space: nowrap;
color: #00ace5;
}
#danmaku-stat-btn .icon-wrapper {
display: flex;
align-items: center;
justify-content: center;
margin-right: 8px;
flex-shrink: 0;
}
`;
document.head.appendChild(style);
document.body.appendChild(btn);
}
// 打开iframe面板
function openIframe() {
if (document.getElementById('danmaku-stat-iframe')) return;
// 创建蒙层
const overlay = document.createElement('div');
overlay.id = 'danmaku-stat-overlay';
overlay.style.position = 'fixed';
overlay.style.top = '0';
overlay.style.left = '0';
overlay.style.width = '100%';
overlay.style.height = '100%';
overlay.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';
overlay.style.zIndex = '9998';
overlay.onclick = () => {
document.getElementById('danmaku-stat-iframe')?.remove();
overlay.remove();
};
document.body.appendChild(overlay);
// 创建iframe
const iframe = document.createElement('iframe');
iframe.id = 'danmaku-stat-iframe';
iframe.style.position = 'fixed';
iframe.style.top = '15%';
iframe.style.left = '15%';
iframe.style.width = '70%';
iframe.style.height = '70%';
iframe.style.backgroundColor = '#fff';
iframe.style.zIndex = '9999';
iframe.style.padding = '20px';
iframe.style.overflow = 'hidden';
iframe.style.borderRadius = '8px';
iframe.style.boxShadow = '0 0 10px rgba(0,0,0,0.5)';
iframe.onload = () => initIframeApp(iframe);
document.body.appendChild(iframe);
}
// iframe里初始化Vue应用
async function initIframeApp(iframe) {
const doc = iframe.contentDocument;
const win = iframe.contentWindow;
// 引入外部库
const addScript = (src) => new Promise(resolve => {
const script = doc.createElement('script');
script.src = src;
script.onload = resolve;
doc.head.appendChild(script);
});
const addCss = (href) => {
const link = doc.createElement('link');
link.rel = 'stylesheet';
link.href = href;
doc.head.appendChild(link);
};
addCss('https://cdn.jsdelivr.net/npm/element-plus/dist/index.css');
await addScript('https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.global.prod.js');
await addScript('https://cdn.jsdelivr.net/npm/element-plus/dist/index.full.min.js');
await addScript('https://cdn.jsdelivr.net/npm/echarts@5');
// 创建挂载点
const appRoot = doc.createElement('div');
appRoot.id = 'danmaku-app';
doc.body.style.margin = '0';
doc.body.appendChild(appRoot);
// 挂载Vue
const { createApp, ref, onMounted } = win.Vue;
const ELEMENT_PLUS = win.ElementPlus;
const ECHARTS = win.echarts;
class DanmakuManager {
constructor(danmakuList) {
this.original = danmakuList;
this.filtered = [...danmakuList];
}
reset() {
this.filtered = [...this.original];
}
filter(regex) {
this.filtered = this.original.filter(d => regex.test(d.content));
}
getSortedDanmakus() {
return [...this.filtered].sort((a, b) => a.progress - b.progress);
}
getStats() {
const countMap = {};
for (const d of this.filtered) {
countMap[d.midHash] = (countMap[d.midHash] || 0) + 1;
}
return Object.entries(countMap)
.map(([user, count]) => ({ user, count }))
.sort((a, b) => b.count - a.count);
}
getDanmakusByUser(midHash) {
return this.filtered.filter(d => d.midHash === midHash);
}
getOriginDanmakusByUser(midHash) {
return this.original.filter(d => d.midHash === midHash);
}
}
const app = createApp({
setup() {
const displayedDanmakus = ref([]);
const filterText = ref('(哈|呵|h|ha|HA|H+|233+)+');
const originDanmakuCount = ref(0);
const currentUserMidHash = ref('');
const danmakuCount = ref({ user: 0, dm: 0 });
const videoData = ref({});
let manager = null;
let chart = null;
function formatProgress(ms) {
const s = Math.floor(ms / 1000);
const min = String(Math.floor(s / 60)).padStart(2, '0');
const sec = String(s % 60).padStart(2, '0');
return `${min}:${sec}`;
}
function formatCtime(t) {
const d = new Date(t * 1000);
return d.getFullYear() + '-' +
String(d.getMonth() + 1).padStart(2, '0') + '-' +
String(d.getDate()).padStart(2, '0') + ' ' +
String(d.getHours()).padStart(2, '0') + ':' +
String(d.getMinutes()).padStart(2, '0');
}
function formatTime(ts) {
const d = new Date(ts * 1000);
return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')} ${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`;
}
function parseDanmakuXml(xmlText) {
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(xmlText, 'application/xml');
const dElements = xmlDoc.getElementsByTagName('d');
const danmakus = [];
for (const d of dElements) {
const pAttr = d.getAttribute('p');
if (!pAttr) continue;
const parts = pAttr.split(',');
if (parts.length < 8) continue;
danmakus.push({
progress: parseFloat(parts[0]) * 1000,
mode: parseInt(parts[1]),
fontsize: parseInt(parts[2]),
color: parseInt(parts[3]),
ctime: parseInt(parts[4]),
midHash: parts[6],
id: parts[7],
weight: parseInt(parts[8]),
content: d.textContent.trim()
});
}
return danmakus;
}
function midHashOnClick() {
if (!currentUserMidHash.value) return;
ELEMENT_PLUS.ElMessageBox.confirm(
'是否尝试反查用户ID？（可能需要一段时间）',
'提示',
{
confirmButtonText: '是',
cancelButtonText: '否',
type: 'warning',
}
).then(() => {
// 开始反查用户ID
var midcrc = new biliCrc2Mid();
var result = midcrc(currentUserMidHash.value);
if (result && result !== '-1') {
ELEMENT_PLUS.ElMessageBox.alert(
`已查到用户ID：
<a href="https://space.bilibili.com/${result}" target="_blank" style="color:#409eff;text-decoration:none;">
点击访问用户空间
</a>`,
'查找成功',
{
dangerouslyUseHTMLString: true,
confirmButtonText: '确定',
type: 'success',
}
);
} else {
ELEMENT_PLUS.ElMessage.error('未能查到用户ID或用户不存在');
}
}).catch(() => {
// 用户点击了取消，只复制midHash
navigator.clipboard.writeText(currentUserMidHash.value).then(() => {
ELEMENT_PLUS.ElMessage.success('midHash已复制到剪贴板');
}).catch(() => {
ELEMENT_PLUS.ElMessage.error('复制失败');
});
});
displayedDanmakus.value = manager.getOriginDanmakusByUser(currentUserMidHash.value).sort((a, b) => a.progress - b.progress);
}
function updateChart(stats) {
const chartEl = doc.getElementById('chart');
if (!chartEl) {
console.warn('chart容器还没渲染好，稍后重试');
setTimeout(() => updateChart(stats), 100); // 100ms后重试
return;
}
if (!chart) {
chart = ECHARTS.init(chartEl);
chart.on('click', (params) => {
const selected = params.name;
currentUserMidHash.value = selected;
displayedDanmakus.value = manager.getDanmakusByUser(selected).sort((a, b) => a.progress - b.progress);
});
}
const userNames = stats.map(item => item.user);
const counts = stats.map(item => item.count);
const maxCount = Math.max(...counts);
chart.setOption({
tooltip: {},
title: { text: '用户弹幕统计' },
grid: { left: 100 },
xAxis: {
type: 'value',
min: 0,
max: Math.ceil(maxCount * 1.1), // 横轴最大值略大一点
scale: false
},
yAxis: {
type: 'category',
data: userNames,
inverse: true
},
dataZoom: [
{
type: 'slider',
yAxisIndex: 0,
startValue: 0,
endValue: userNames.length >= 20 ? 19 : userNames.length,
width: 10
}
],
series: [{
type: 'bar',
data: counts,
label: {
show: true,
position: 'right', // 在条形右边显示
formatter: '{c}', // 显示数据本身
fontSize: 12
}
}]
});
}
function handleRowClick(row) {
if (!chart) return;
const userMid = row.midHash;
const option = chart.getOption();
const index = option.yAxis[0].data.indexOf(userMid);
if (index >= 0) {
chart.setOption({
yAxis: {
axisLabel: {
formatter: function (value) {
if (value === userMid) {
return '{a|' + value + '}';
} else {
return value;
}
},
rich: {
a: {
color: '#5470c6',
fontWeight: 'bold'
}
}
}
},
dataZoom: [{
startValue: Math.min(option.yAxis[0].data.length - 20, Math.max(0, index - 9)),
endValue: Math.min(option.yAxis[0].data.length - 1, Math.max(0, index - 9) + 19)
}]
});
}
}
function applyFilter() {
currentUserMidHash.value = '';
try {
const regex = new RegExp(filterText.value, 'i');
manager.filter(regex);
displayedDanmakus.value = manager.getSortedDanmakus();
const stats = manager.getStats();
danmakuCount.value = { user: stats.length, dm: displayedDanmakus.value.length }
updateChart(stats);
} catch (e) {
alert('无效正则表达式');
}
}
function resetFilter() {
currentUserMidHash.value = '';
manager.reset();
displayedDanmakus.value = manager.getSortedDanmakus();
const stats = manager.getStats();
danmakuCount.value = { user: stats.length, dm: displayedDanmakus.value.length }
updateChart(stats);
}
async function getVideoData() {
const url = location.href;
let bvid = null;
// 判断是否为 watchlater 链接
if (url.includes('/list/watchlater')) {
const match = url.match(/[?&]bvid=(BV\w+)/);
if (match) {
bvid = match[1];
}
} else {
const match = url.match(/\/video\/(BV\w+)/);
if (match) {
bvid = match[1];
}
}
if (!bvid) {
console.error('找不到 BVID');
return null;
}
try {
const res = await fetch(`https://api.bilibili.com/x/web-interface/view?bvid=${bvid}`);
const json = await res.json();
if (json && json.data) {
return json.data;
} else {
console.error('获取视频基本信息失败', json);
return null;
}
} catch (e) {
console.error('请求出错', e);
return null;
}
}
onMounted(async () => {
videoData.value = await getVideoData();
const oid = videoData.value.cid;
if (!oid) {
alert('无法找到视频chatid');
return;
}
const res = await fetch(`https://api.bilibili.com/x/v1/dm/list.so?oid=${oid}`);
const text = await res.text();
const data = parseDanmakuXml(text);
manager = new DanmakuManager(data);
originDanmakuCount.value = data.length; // 原始弹幕数量
displayedDanmakus.value = manager.getSortedDanmakus();
const stats = manager.getStats();
danmakuCount.value = { user: stats.length, dm: displayedDanmakus.value.length }
updateChart(stats);
});
return {
displayedDanmakus,
filterText,
applyFilter,
resetFilter,
danmakuCount,
videoData,
originDanmakuCount,
currentUserMidHash,
midHashOnClick,
handleRowClick,
formatProgress,
formatCtime,
formatTime
};
},
template: `
<el-container style="height: 100%;">
<!-- 左边 -->
<el-aside width="50%" style="overflow-y: auto;">
<el-main style="overflow-y: auto; padding: 10px;">
<!-- 上半部：标题区域 -->
<div style="text-align: left; margin-bottom: 10px;">
<h3>{{ videoData.title || '加载中...' }}</h3>
<p style="margin: 10px;">
BVID：
<el-link
v-if="videoData.bvid"
:href="'https://www.bilibili.com/video/' + videoData.bvid"
target="_blank"
type="primary"
style="vertical-align: baseline;"
>
{{ videoData.bvid }}
</el-link><br/>
UP主：
<el-link
v-if="videoData.owner"
:href="'https://space.bilibili.com/' + videoData.owner.mid"
target="_blank"
type="primary"
style="vertical-align: baseline;"
>
{{ videoData.owner.name }}
</el-link><br/>
发布时间：{{ videoData.pubdate ? formatTime(videoData.pubdate) : '-' }}<br/>
截止 {{ formatTime(Math.floor(Date.now()/1000)) }} 载入实时弹幕
<el-link
v-if="videoData.owner"
:href="'https://api.bilibili.com/x/v1/dm/list.so?oid=' + videoData.cid"
target="_blank"
type="primary"
style="vertical-align: baseline;"
>
{{ originDanmakuCount }}
</el-link>
条
</p>
<p style="color: gray">
<template v-if="currentUserMidHash">
用户<el-link type="primary" @click="midHashOnClick" style="vertical-align: baseline;">{{ currentUserMidHash }}</el-link>
发送弹幕共 {{ displayedDanmakus.length }} 条
</template>
<template v-else>
列表当前共 {{ displayedDanmakus.length }} 条弹幕
</template>
</p>
</div>
<!-- 下半部：弹幕表格 -->
<el-table :data="displayedDanmakus" style="width: 100%;" height="calc(100% - 150px)" border @row-click="handleRowClick">
<el-table-column prop="progress" label="时间" align="left" width="100">
<template #default="{ row }">{{ formatProgress(row.progress) }}</template>
</el-table-column>
<el-table-column prop="content" label="弹幕内容" align="left">
<template #default="{ row }">
<el-tooltip
class="item"
effect="dark"
placement="top-start"
:content="'发送用户: ' + row.midHash + '\\n屏蔽等级: ' + row.weight"
>
<span>{{ row.content }}</span>
</el-tooltip>
</template>
</el-table-column>
<el-table-column prop="ctime" label="发送时间" align="left" width="180">
<template #default="{ row }">{{ formatCtime(row.ctime) }}</template>
</el-table-column>
</el-table>
</el-main>
</el-aside>
<!-- 右边 -->
<el-container>
<el-header style="height: auto;">
<el-input v-model="filterText" placeholder="请输入正则表达式" style="width: 300px; margin-right: 10px;"></el-input>
<el-button @click="applyFilter">筛选</el-button>
<el-button @click="resetFilter" type="warning">取消筛选</el-button>
<div style="margin-top: 10px; margin-bottom: 10px;">
共有 {{ danmakuCount.user }} 位不同用户发送了 {{ danmakuCount.dm }} 条弹幕
</div>
</el-header>
<el-main style="flex: 1;">
<div id="chart" style="width: 100%; height: 100%;"></div>
</el-main>
</el-container>
</el-container>
`
});
app.use(ELEMENT_PLUS);
app.mount('#danmaku-app');
}
insertButton();
})();
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