如何在 Puppeteer 中重新加载页面？

Question

每当页面加载不正确或遇到问题时，我想重新加载页面。我尝试了 page.reload() 但它不起作用。

 for(const sect of sections ){

            // Now collect all the URLs
            const appUrls = await page.$$eval('div.main > ul.app-list > li > div.app-info a.app-info-icon', links => links.map(link => link.href));

            // Visit each URL one by one and collect the data
            for (let appUrl of appUrls) {
                var count = i++;
                try{
                    await page.goto(appUrl);
                    const appName = await page.$eval('div.det-name-int', div => div.innerText.trim());
                    console.log('\n' + count);
                    console.log(appName);
                } catch(e){
                    console.log('\n' + count);
                    console.log('ERROR', e);
                    await page.reload();
                }

            }

        }

它给了我这个错误：

     ERROR Error: Error: failed to find element matching selector "div.det-name-int"
    at ElementHandle.$eval (C:\Users\Administrator\node_modules\puppeteer\lib\JS
Handle.js:418:13)
    at process._tickCallback (internal/process/next_tick.js:68:7)
  -- ASYNC --
    at ElementHandle.<anonymous> (C:\Users\Administrator\node_modules\puppeteer\
lib\helper.js:108:27)
    at DOMWorld.$eval (C:\Users\Administrator\node_modules\puppeteer\lib\DOMWorl
d.js:149:21)
    at process._tickCallback (internal/process/next_tick.js:68:7)
  -- ASYNC --
    at Frame.<anonymous> (C:\Users\Administrator\node_modules\puppeteer\lib\help
er.js:108:27)
    at Page.$eval (C:\Users\Administrator\node_modules\puppeteer\lib\Page.js:329
:29)
    at Page.<anonymous> (C:\Users\Administrator\node_modules\puppeteer\lib\helpe
r.js:109:23)
    at main (C:\Users\Administrator\Desktop\webscrape\text.js:35:43)
    at process._tickCallback (internal/process/next_tick.js:68:7)

某些链接无法成功加载。当我手动刷新这些页面时，它起作用了。所以我希望有一个函数或方法可以帮助我在出现错误时自动重新加载我的页面。

原文由 glhe13 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

我设法使用 while 循环解决它。

 for (let appUrl of appUrls) {
    var count = i++;

    while(true){
        try{

            await page.goto(appUrl);

            const appName = await page.$eval('div.det-name-int', div => div.innerText.trim());

            console.log('\n' + count);
            console.log('Name: ' , appName);

            break;

            } catch(e){
              console.log('\n' + count);
              console.log('ERROR');
              await page.reload(appUrl);

              continue;
            }

}

原文由 glhe13 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 2

这对我有用：

 await page.reload({ waitUntil: ["networkidle0", "domcontentloaded"] });

有关详细信息，请参阅 Puppeteer 文档： https ://github.com/GoogleChrome/puppeteer/blob/master/docs/api.md#pagereloadoptions

原文由 David Green 发布，翻译遵循 CC BY-SA 4.0 许可协议