捕获微博群聊接口（XHR/fetch），保存 id / from_uid / 时间排序后的消息
// ==UserScript==
// @name 微博聊天-群聊消息保存
// @namespace http://tampermonkey.net/
// @version 1
// @author tu
// @description 捕获微博群聊接口（XHR/fetch），保存 id / from_uid / 时间排序后的消息
// @match https://api.weibo.com/chat
// @icon https://www.google.com/s2/favicons?sz=64&domain=weibo.com
// @grant none
// @run-at document-idle
// @license MIT
// ==/UserScript==
(function () {
'use strict';
window._weiboMessages = [];
window._weiboMessageIds = new Set();
const msgApiRegex = /\/webim\/groupchat\/query_messages\.json/;
function getMsgId(msg) {
return msg?.id || msg?.mid || msg?.message_id || null;
}
function getTimestamp(msg) {
if (typeof msg.time === 'number' && msg.time > 0) {
return msg.time * 1000;
}
if (msg.created_at) {
const t = Date.parse(msg.created_at);
if (!isNaN(t)) return t;
}
return Date.now();
}
function formatMsgTime(ts) {
return new Date(ts).toLocaleString();
}
function getMsgContent(msg) {
const raw = msg?.content ?? msg?.text ?? msg?.message ?? msg?.body ?? '';
// 替换换行符和多余空格
return raw.replace(/[\r\n]+/g, ' ').replace(/\s+/g, ' ').trim();
}
function pushMessageNormalized(msg) {
const id = getMsgId(msg);
if (!id) return false;
if (window._weiboMessageIds.has(String(id))) return false;
window._weiboMessageIds.add(String(id));
const ts = getTimestamp(msg);
const normalized = {
id: id,
from_uid: msg.from_uid || (msg.from_user?.id) || null,
user: msg.from_user?.screen_name || msg.from_user?.name || msg.from_uid || '未知用户',
timestamp: ts,
time: formatMsgTime(ts),
content: getMsgContent(msg),
raw: msg
};
window._weiboMessages.push(normalized);
return true;
}
function handleMessages(data) {
const msgs = data.messages || data.data?.messages || [];
if (!Array.isArray(msgs) || msgs.length === 0) return;
let added = 0;
for (const m of msgs) {
if (pushMessageNormalized(m)) added++;
}
if (added > 0) {
console.log(`📥 新增 ${added} 条消息，总计 ${window._weiboMessages.length}`);
}
}
function sortMessages() {
window._weiboMessages.sort((a, b) => a.timestamp - b.timestamp);
}
function downloadTXT(filename) {
if (window._weiboMessages.length === 0) { alert('没有消息可保存'); return; }
sortMessages();
const lines = window._weiboMessages.map(m =>
`[${m.id}][${m.time}][${m.from_uid}]${m.user}: ${m.content}`
);
const blob = new Blob([lines.join('\n')], { type: 'text/plain;charset=utf-8' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = filename;
a.click();
URL.revokeObjectURL(url);
}
function downloadJSON(filename) {
if (window._weiboMessages.length === 0) { alert('没有消息可保存'); return; }
sortMessages();
const blob = new Blob([JSON.stringify(window._weiboMessages, null, 2)], { type: 'application/json;charset=utf-8' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = filename;
a.click();
URL.revokeObjectURL(url);
}
// hook fetch
const origFetch = window.fetch;
window.fetch = async (...args) => {
const response = await origFetch.apply(this, args);
let url = '';
try {
if (typeof args[0] === 'string') url = args[0];
else if (args[0] instanceof Request) url = args[0].url;
} catch { }
if (url && msgApiRegex.test(url)) {
try {
const clone = response.clone();
clone.json().then(data => handleMessages(data)).catch(() => { });
} catch { }
}
return response;
};
// hook XHR
(function () {
const origOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function (method, url, ...rest) {
this._weibo_capture_url = url;
return origOpen.apply(this, [method, url, ...rest]);
};
const origSend = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function (...args) {
this.addEventListener('load', function () {
const url = this._weibo_capture_url || this.responseURL || '';
if (url && msgApiRegex.test(url)) {
try {
const text = this.responseText;
const data = JSON.parse(text);
handleMessages(data);
} catch { }
}
});
return origSend.apply(this, args);
};
})();
// UI
function addPanel() {
if (document.getElementById('weiboCapturePanel')) return;
const panel = document.createElement('div');
panel.id = 'weiboCapturePanel';
panel.style.cssText = `
position: fixed; right: 18px; bottom: 18px; z-index: 2147483647;
background: rgba(0,0,0,0.7); color: #fff; padding: 10px;
border-radius: 8px; font-family: sans-serif; font-size: 13px;
box-shadow: 0 4px 14px rgba(0,0,0,0.3); display: flex; gap: 8px; align-items: center;
`;
const countEl = document.createElement('div');
countEl.id = 'weiboCaptureCount';
countEl.innerText = `已捕获：${window._weiboMessages.length}`;
countEl.style.minWidth = '90px';
const btnTxt = document.createElement('button');
btnTxt.innerText = '下载 TXT';
btnTxt.onclick = () => downloadTXT(`weibo_groupchat_${Date.now()}.txt`);
const btnJson = document.createElement('button');
btnJson.innerText = '下载 JSON';
btnJson.onclick = () => downloadJSON(`weibo_groupchat_${Date.now()}.json`);
const btnClear = document.createElement('button');
btnClear.innerText = '清空';
btnClear.onclick = () => {
if (!confirm('确认清空已捕获的消息？')) return;
window._weiboMessages = [];
window._weiboMessageIds = new Set();
countEl.innerText = `已捕获：0`;
};
[btnTxt, btnJson, btnClear].forEach(btn => {
btn.style.cssText = `
padding: 6px 8px; border: none; border-radius: 6px; cursor: pointer;
`;
});
panel.appendChild(countEl);
panel.appendChild(btnTxt);
panel.appendChild(btnJson);
panel.appendChild(btnClear);
document.body.appendChild(panel);
setInterval(() => {
countEl.innerText = `已捕获：${window._weiboMessages.length}`;
}, 1000);
}
if (document.readyState === 'complete' || document.readyState === 'interactive') {
addPanel();
} else {
window.addEventListener('DOMContentLoaded', addPanel);
}
})();