在Powershell Core 6中替换HtmlWebResponseObject.ParsedHtml [英] HtmlWebResponseObject.ParsedHtml replacement in Powershell Core 6

问题描述

我的目标是解析使用Invoke-WebRequest检索的html文件.如果可能的话，我想避免使用任何外部库.

My goal is to parse an html file retrieved with Invoke-WebRequest. If possible I'd like to avoid any external libraries.

我面临的问题是，Invoke-WebRequest返回的是BasicHtmlWebResponseObject而不是HtmlWebResponseObject

The problem I am facing is, that Invoke-WebRequest returns a BasicHtmlWebResponseObject instead of a HtmlWebResponseObject since Powershell 6. The Basic version misses the ParsedHtml property. Is there a good alternative to parse html in Powershell Core 6?

我尝试使用Select-Xml，但是我的html并不完全有效(例如缺少结束标记)，因此无法解析结果.

I've tried to use Select-Xml but my html is not entirely valid (e.g. a missing closing tag), hence this fails to parse the result.

我发现的另一种替代方法是使用New-Object -ComObject "HTMLFile"，但是据我了解，这依赖于Internet Explorer进行解析，我想避免这种情况.

Another alternative I've found is to use New-Object -ComObject "HTMLFile" but from my understanding this relies on Internet Explorer for parsing which I'd like to avoid.

此处 a>，可惜这个问题自8个月以来一直没有任何答案或活动.

There is a very similar question here but sadly this question had no answer or activity since 8 months.

推荐答案

如注释中所述，没有库实际上是不可能的.一个非常好的库，您可以将其用于dotnet的 AngleSharp 库.它具有强大的html解析功能，并且dotnet代码与powershell交互非常友好，请查看此

As mentioned in the comments it is not really possible without a library. One very good library you could use it the AngleSharp library for dotnet. It has great html parsing capabilities and dotnet code interacts very friendly with powershell, have a look at this link.

以下是他们网站上的示例:

Here is an example from their website:

var config = Configuration.Default.WithDefaultLoader();
var address = "https://en.wikipedia.org/wiki/List_of_The_Big_Bang_Theory_episodes";
var context = BrowsingContext.New(config);
var document = await context.OpenAsync(address);
var cellSelector = "tr.vevent td:nth-child(3)";
var cells = document.QuerySelectorAll(cellSelector);
var titles = cells.Select(m => m.TextContent);

这篇关于在Powershell Core 6中替换HtmlWebResponseObject.ParsedHtml的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！