{"id":984,"date":"2023-09-03T11:12:00","date_gmt":"2023-09-03T03:12:00","guid":{"rendered":"http:\/\/blog.5danyuan.com\/?p=984"},"modified":"2023-11-25T16:02:44","modified_gmt":"2023-11-25T08:02:44","slug":"%e6%97%a0%e5%a4%b4%e6%b5%8f%e8%a7%88%e5%99%a8-puppeteersharp","status":"publish","type":"post","link":"https:\/\/blog.5danyuan.com\/?p=984","title":{"rendered":"\u65e0\u5934\u6d4f\u89c8\u5668 PuppeteerSharp"},"content":{"rendered":"\n

\u5728\u7814\u7a76\u65e0\u5934\u6d4f\u89c8\u5668\u7684\u65f6\u5019\uff0c\u53d1\u73b0\u4e86\u4e00\u4e9b\u4e0d\u9519\u7684\u5de5\u5177\uff0c\u4f8b\u5982 phantomjs \u5c31\u53ef\u4ee5\u8ba9\u4f60\u4ee5\u524d\u7aef js \u811a\u672c\u7684\u65b9\u5f0f\u6765\u64cd\u4f5c\u9875\u9762\uff0c\u4ee5\u6ee1\u8db3\u4e00\u4e9b\u81ea\u52a8\u5316\u6d4b\u8bd5\u65b9\u9762\u7684\u9700\u6c42\u3002\u540e\u6765\u53c8\u53d1\u73b0\u4e86 puppeteer\uff0c\u6709\u5f88\u591a\u5f00\u53d1\u8bed\u8a00\u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n

\u800c\u4eca\u5929\u63d0\u53ca\u7684 PuppeteerSharp \u5c31\u662f .Net \u7684\u5b9e\u73b0\u3002\u53ef\u80fd\u6211\u6267\u5ff5\u592a\u6df1\uff0c\u603b\u89c9\u5f97 Net \u662f\u76f8\u5f53\u4e0d\u9519\u7684\u9009\u62e9\u3002<\/p>\n\n\n\n

PuppeteerSharp \u662f\u4e00\u4e2a\u63a7\u5236\u65e0\u5934Chrome \u6d4f\u89c8\u5668\u7684\u5e93\uff0c\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u901a\u8fc7\u7f16\u7a0b\u65b9\u5f0f\u6a21\u62df\u6d4f\u89c8\u5668\u884c\u4e3a\uff0c\u6267\u884c\u7f51\u9875\u64cd\u4f5c\uff0c\u622a\u53d6\u7f51\u9875\u622a\u56fe\uff0c\u83b7\u53d6\u7f51\u9875\u5185\u5bb9\uff0c\u53ef\u4ee5\u628a\u7f51\u9875\u8f6c\u6362\u6210PDF\u7b49\u7b49\u3002<\/p>\n\n\n\n

\u622a\u56fe<\/strong><\/p>\n\n\n\n

using var browserFetcher = new BrowserFetcher();\nawait browserFetcher.DownloadAsync();\nawait using var browser = await Puppeteer.LaunchAsync(\nnew LaunchOptions { Headless = true });\nawait using var page = await browser.NewPageAsync();\nawait page.GoToAsync(\"http:\/\/www.google.com\");\nawait page.ScreenshotAsync(outputFile);\n<\/code><\/pre>\n\n\n\n
\u4e5f\u652f\u6301\u8bbe\u7f6e\u9875\u9762\u7684\u5c3a\u5bf8<\/p>\n\n\n\n
await Page.SetViewportAsync(new ViewPortOptions\n{\nWidth = 500,\nHeight = 500\n});<\/code><\/code><\/pre>\n\n\n\n
\u751f\u6210 pdf \u6587\u4ef6<\/strong><\/p>\n\n\n\n
using var browserFetcher = new BrowserFetcher();\nawait browserFetcher.DownloadAsync();\nawait using var browser = await Puppeteer.LaunchAsync(new LaunchOptions {Headless = true});\nawait using var page = await browser.NewPageAsync();\nawait page.GoToAsync(\"http:\/\/www.google.com\"); \/\/ In case of fonts being loaded from a CDN, use WaitUntilNavigation.Networkidle0 as a second param.\nawait page.EvaluateExpressionHandleAsync(\"document.fonts.ready\"); \/\/ Wait for fonts to be loaded. Omitting this might result in no text rendered in pdf.\nawait page.PdfAsync(outputFile);<\/code><\/code><\/pre>\n\n\n\n
\u52a8\u6001\u6ce8\u5165 html \u5143\u7d20<\/strong><\/p>\n\n\n\n
await using var page = await browser.NewPageAsync();\nawait page.SetContentAsync(\"My Receipt\");\nvar result = await page.GetContentAsync();<\/code><\/code><\/pre>\n\n\n\n
\u6267\u884c\u811a\u672c<\/strong><\/p>\n\n\n\n
await using var page = await browser.NewPageAsync();\nvar seven = await page.EvaluateExpressionAsync(\"4 + 3\");\nvar someObject = await page.EvaluateFunctionAsync(\"(value) => ({a: value})\", 5);\nConsole.WriteLine(someObject.a);<\/code><\/code><\/pre>\n\n\n\n
\u7b49\u5f85\u67d0\u4e2a\u9009\u62e9\u5668<\/strong><\/p>\n\n\n\n
using (var page = await browser.NewPageAsync())\n{\nawait page.GoToAsync(\"https:\/\/www.baidu.com\");\nawait page.WaitForSelectorAsync(\"div.main-content\")\nawait page.PdfAsync(outputFile));\n}<\/code><\/code><\/pre>\n\n\n\n
\u7b49\u5f85\u51fd\u6570\u7684\u6267\u884c<\/strong><\/p>\n\n\n\n
using (var page = await browser.NewPageAsync())\n{\nawait page.GoToAsync(\"https:\/\/www.baidu.com\");\nvar watchDog = page.WaitForFunctionAsync(\"()=> window.innerWidth < 100\");\nawait page.SetViewportAsync(new ViewPortOptions { Width = 50, Height = 50 });\nawait watchDog;\n}<\/code><\/pre>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u7814\u7a76\u65e0\u5934\u6d4f\u89c8\u5668\u7684\u65f6\u5019\uff0c\u53d1\u73b0\u4e86\u4e00\u4e9b\u4e0d\u9519\u7684\u5de5\u5177\uff0c\u4f8b\u5982 phantomjs \u5c31\u53ef\u4ee5\u8ba9\u4f60\u4ee5\u524d\u7aef js \u811a\u672c\u7684\u65b9\u5f0f\u6765\u64cd […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[344,5],"tags":[120],"class_list":["post-984","post","type-post","status-publish","format-standard","hentry","category-c-3","category-daily","tag-c-sharp"],"_links":{"self":[{"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=\/wp\/v2\/posts\/984","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=984"}],"version-history":[{"count":0,"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=\/wp\/v2\/posts\/984\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=984"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=984"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.5danyuan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}