修改先下滑一段

•	sleep 1.4s
	•	再检测按钮
	•	没按钮就继续下滑
	•	有按钮就点
	•	点完等接口响应
	•	再继续循环
This commit is contained in:
云上贵猪 2026-03-11 03:20:12 +08:00
parent 2d5aa1d860
commit 9d97bbc051
5 changed files with 35965 additions and 0 deletions

1
.gitignore vendored
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.DS_Store
.pw-user-data
node_modules/
dist/
npm-debug.log*

316
backServer/capture.js Normal file
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import { chromium } from 'playwright'
import { ensureDataFiles, readCache, writeCache, writeStatus } from './lib/cache.js'
const PAGE_URL = 'https://www1.gdtv.cn/tvColumn/768'
function parseEpisodeItem(rawItem) {
try {
const dataObj = typeof rawItem.data === 'string' ? JSON.parse(rawItem.data) : rawItem.data
const videoObj =
typeof dataObj.videoUrl === 'string' ? JSON.parse(dataObj.videoUrl) : dataObj.videoUrl
return {
id: dataObj.id || rawItem.id,
title: dataObj.title || '',
coverUrl: dataObj.coverUrl || '',
releasedAt: dataObj.releasedAt || 0,
timeLength: dataObj.timeLength || 0,
videoUrl: videoObj?.hd || videoObj?.sd || '',
raw: dataObj
}
} catch (error) {
console.error('解析单条节目失败:', error)
return null
}
}
function mergeCache(oldCache, responseUrl, data) {
const url = new URL(responseUrl)
const currentPage = Number(url.searchParams.get('currentPage') || 1)
const beginScore = Number(url.searchParams.get('beginScore') || 0)
const parsedItems = (data.list || [])
.map(parseEpisodeItem)
.filter(Boolean)
const itemMap = new Map((oldCache.items || []).map(item => [item.id, item]))
for (const item of parsedItems) {
itemMap.set(item.id, item)
}
return {
...oldCache,
updatedAt: new Date().toISOString(),
name: data.name || oldCache.name || '七十二家房客',
coverUrl: data.coverUrl || oldCache.coverUrl || '',
displayType: data.displayType ?? oldCache.displayType ?? 0,
beginScoreMap: {
...(oldCache.beginScoreMap || {}),
[currentPage]: beginScore
},
pages: {
...(oldCache.pages || {}),
[currentPage]: {
currentPage,
beginScore,
count: parsedItems.length,
capturedAt: new Date().toISOString()
}
},
items: Array.from(itemMap.values()).sort((a, b) => (b.releasedAt || 0) - (a.releasedAt || 0))
}
}
function log(...args) {
console.log('[capture]', ...args)
}
async function sleep(ms) {
return new Promise((resolve) => setTimeout(resolve, ms))
}
async function getPageScrollInfo(page) {
return await page.evaluate(() => {
return {
scrollTop: window.scrollY || document.documentElement.scrollTop || document.body.scrollTop || 0,
scrollHeight: Math.max(
document.body.scrollHeight,
document.documentElement.scrollHeight
),
innerHeight: window.innerHeight
}
})
}
async function scrollStep(page, distance = 700) {
await page.evaluate((step) => {
window.scrollBy(0, step)
}, distance)
}
async function findLoadMoreButton(page) {
const selectors = [
'.index__load-component___1Ht2U button',
'button:has-text("点击加载更多")',
'button:has-text("加载更多")',
'.ant-btn:has-text("点击加载更多")'
]
for (const selector of selectors) {
const locator = page.locator(selector).first()
const count = await page.locator(selector).count().catch(() => 0)
if (!count) continue
const visible = await locator.isVisible().catch(() => false)
if (visible) {
return locator
}
}
return null
}
async function getDomItemCount(page) {
return await page.evaluate(() => {
const selectors = [
'.index__item-component___1q1ob',
'.index__list-item',
'.ant-list-item',
'li'
]
for (const selector of selectors) {
const count = document.querySelectorAll(selector).length
if (count > 0) return count
}
return 0
}).catch(() => 0)
}
async function clickLoadMoreAndWait(page) {
const button = await findLoadMoreButton(page)
if (!button) return false
const responsePromise = page.waitForResponse(
(response) =>
response.url().includes('gdtv-api.gdtv.cn/api/tvColumn/v1/news') &&
response.request().method() === 'GET' &&
response.status() === 200,
{ timeout: 15000 }
).catch(() => null)
await button.scrollIntoViewIfNeeded().catch(() => {})
await sleep(800)
await button.click({ timeout: 10000 }).catch(async () => {
await button.click({ force: true, timeout: 10000 })
})
const response = await responsePromise
await sleep(1800)
return !!response
}
async function autoCollectByScrollAndClick(page, maxRounds = 120) {
let round = 0
let noChangeRounds = 0
let lastDomCount = await getDomItemCount(page)
let lastScrollTop = 0
while (round < maxRounds) {
round += 1
const button = await findLoadMoreButton(page)
if (button) {
log(`${round} 轮:发现“加载更多”按钮,准备点击`)
const clicked = await clickLoadMoreAndWait(page)
const currentDomCount = await getDomItemCount(page)
if (clicked) {
log(`${round} 轮:点击成功,当前列表数量 ${currentDomCount}`)
} else {
log(`${round} 轮:点击后未捕获到新响应`)
}
if (currentDomCount <= lastDomCount) {
noChangeRounds += 1
} else {
noChangeRounds = 0
lastDomCount = currentDomCount
}
await sleep(1200)
continue
}
await scrollStep(page, 700)
await sleep(1400)
const { scrollTop, scrollHeight, innerHeight } = await getPageScrollInfo(page)
const currentDomCount = await getDomItemCount(page)
log(
`${round}继续下滑scrollTop=${scrollTop}scrollHeight=${scrollHeight}items=${currentDomCount}`
)
if (currentDomCount <= lastDomCount && scrollTop === lastScrollTop) {
noChangeRounds += 1
} else {
if (currentDomCount > lastDomCount) {
lastDomCount = currentDomCount
}
noChangeRounds = 0
}
lastScrollTop = scrollTop
const nearBottom = scrollTop + innerHeight >= scrollHeight - 80
if (nearBottom) {
log(`${round} 轮:已经接近页面底部`)
await sleep(1800)
const retryButton = await findLoadMoreButton(page)
if (!retryButton) {
noChangeRounds += 1
}
}
if (noChangeRounds >= 6) {
log('连续多轮没有新内容,停止采集')
break
}
}
log(`自动采集流程结束,共执行 ${round}`)
}
async function main() {
ensureDataFiles()
writeStatus({
running: true,
lastMessage: '正在启动浏览器采集',
updatedAt: new Date().toISOString()
})
const browser = await chromium.launchPersistentContext('./.pw-user-data', {
headless: false
})
const page = await browser.newPage()
page.on('response', async (response) => {
const url = response.url()
if (!url.includes('gdtv-api.gdtv.cn/api/tvColumn/v1/news')) return
if (response.status() !== 200) return
try {
const data = await response.json()
const oldCache = readCache()
const nextCache = mergeCache(oldCache, url, data)
writeCache(nextCache)
const currentPage = new URL(url).searchParams.get('currentPage')
const capturedPages = Object.keys(nextCache.pages || {}).length
const totalItems = nextCache.items?.length || 0
writeStatus({
running: true,
lastMessage: `已采集第 ${currentPage}`,
updatedAt: new Date().toISOString(),
capturedPages,
totalItems
})
log(`采集成功: page=${currentPage} totalItems=${totalItems}`)
} catch (error) {
console.error('[capture] 解析响应失败:', error)
}
})
await page.goto(PAGE_URL, { waitUntil: 'domcontentloaded' })
await page.waitForTimeout(5000)
log('已打开页面:', PAGE_URL)
log('等待第一页接口加载...')
await page.waitForResponse(
(response) =>
response.url().includes('gdtv-api.gdtv.cn/api/tvColumn/v1/news') &&
response.request().method() === 'GET' &&
response.status() === 200,
{ timeout: 15000 }
).catch(() => null)
await sleep(2500)
writeStatus({
running: true,
lastMessage: '开始自动下滑并检测加载更多按钮',
updatedAt: new Date().toISOString()
})
await autoCollectByScrollAndClick(page, 150)
writeStatus({
running: false,
lastMessage: '自动采集完成',
updatedAt: new Date().toISOString()
})
log('自动采集完成,数据已写入 data/qishier-cache.json')
}
main().catch((error) => {
console.error('采集启动失败:', error)
writeStatus({
running: false,
lastMessage: `采集启动失败: ${error.message}`,
updatedAt: new Date().toISOString()
})
})

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{
"running": true,
"lastMessage": "已采集第 2 页",
"updatedAt": "2026-03-10T19:14:36.004Z",
"capturedPages": 26,
"totalItems": 1141
}

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76
backServer/lib/cache.js Normal file
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import fs from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)
const dataDir = path.resolve(__dirname, '../data')
const cacheFile = path.join(dataDir, 'qishier-cache.json')
const statusFile = path.join(dataDir, 'capture-status.json')
function ensureDir() {
if (!fs.existsSync(dataDir)) {
fs.mkdirSync(dataDir, { recursive: true })
}
}
export function ensureDataFiles() {
ensureDir()
if (!fs.existsSync(cacheFile)) {
fs.writeFileSync(
cacheFile,
JSON.stringify(
{
updatedAt: null,
name: '七十二家房客',
coverUrl: '',
displayType: 0,
pages: {},
beginScoreMap: {},
items: []
},
null,
2
),
'utf-8'
)
}
if (!fs.existsSync(statusFile)) {
fs.writeFileSync(
statusFile,
JSON.stringify(
{
running: false,
lastMessage: '未启动采集',
updatedAt: null
},
null,
2
),
'utf-8'
)
}
}
export function readCache() {
ensureDataFiles()
return JSON.parse(fs.readFileSync(cacheFile, 'utf-8'))
}
export function writeCache(data) {
ensureDataFiles()
fs.writeFileSync(cacheFile, JSON.stringify(data, null, 2), 'utf-8')
}
export function readStatus() {
ensureDataFiles()
return JSON.parse(fs.readFileSync(statusFile, 'utf-8'))
}
export function writeStatus(status) {
ensureDataFiles()
fs.writeFileSync(statusFile, JSON.stringify(status, null, 2), 'utf-8')
}