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weizhishu_putpetter.js
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weizhishu_putpetter.js
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const puppeteer = require('puppeteer');
exports.getValByPutpetter = async(word, remoteWs) => {
let browser = null;
if (remoteWs) {
//连接远程chrome实例
browser = await puppeteer.connect({ browserWSEndpoint: remoteWs });
} else {
//本地启动chrome实例
browser = await puppeteer.launch();
}
const page = await browser.newPage();
//等5秒,如果没有获取到资源,返回空字符串
let wait = new Promise((resolve, reject) => {
setTimeout(function() {
resolve("");
}, 5000);
})
let resource;
page.setUserAgent("Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1")
//拦截真正需要的资源
page.on('response', response => {
if (response.url() === 'http://data.weibo.com/index/ajax/newindex/getchartdata') {
resource = response.text();
}
});
//打开首页
await page.goto('http://data.weibo.com/index');
//打开搜索页
await page.goto('http://data.weibo.com/index/newindex?visit_type=search');
const inputElement = await page.$('input[type=search]');
//搜索索输入
page.focus('input[type=search]')
inputElement.focus()
await inputElement.type(word)
//智能提示出相关词,回车选择第一项,点击后开始刷新数据
await inputElement.press('Enter', { delay: 100 });
await inputElement.press('Space', { delay: 1000 });
await page.screenshot({ path: `${word}.png` });
//防泄露,释放资源
let jsonData = await Promise.race([wait, resource])
await page.close();
// console.log(typeof jsonData)
return JSON.parse(jsonData).data
};