Jsoup删除H2标签之前的所有内容

Question

I have my HTML source that I get from a website using Jsoup.connect() method. Following is an piece of code from that HTML source (link: https://docs.microsoft.com/en-us/visualstudio/install/workload-component-id-vs-community )

.....
<p>When you set dependencies in your VSIX manifest, you must specify Component IDs 
   only. Use the tables on this page to determine our minimum component dependencies. 
   In some scenarios, this might mean that you specify only one component from a workload. 
   In other scenarios, it might mean that you specify multiple components from a single 
   workload or multiple components from multiple workloads. For more information, see 
   the 
<a href="../extensibility/how-to-migrate-extensibility-projects-to-visual-studio-2017" data-linktype="relative-path">How to: Migrate Extensibility Projects to Visual Studio 2017</a> page.</p>
.....
<h2 id="visual-studio-core-editor-included-with-visual-studio-community-2017">Visual Studio core editor (included with Visual Studio Community 2017)</h2>
.....
<h2 id="see-also">See also</h2>
.....

What I want to do using jsoup is that, I would like to remove every single Html piece before <h2 id="visual-studio-core-editor-included-with-visual-studio-community-2017">Visual Studio core editor (included with Visual Studio Community 2017)</h2>

,and everything after (including) <h2 id="see-also">See also</h2>

I have a solution like this, but this pretty much didnt work for me:

        try {
            document = Jsoup.connect(Constants.URL).get();
        }
        catch (IOException iex) {
            iex.printStackTrace();
        }
        document = Parser.parse(document.toString().replaceAll(".*?<a href=\"workload-and-component-ids\" data-linktype=\"relative-path\">Visual Studio 2017 Workload and Component IDs</a> page.</p>", "") , Constants.URL);
        document = Parser.parse(document.toString().replaceAll("<h2 id=\"see-also\">See also</h2>?.*", "") , Constants.URL);
        return null;

Any help would be appreciated.

Answer 1

Simple way could be: get the whole html of the page as a string, make a substring of the part you need and parse that substring once again with jsoup.

        Document doc = Jsoup.connect("https://docs.microsoft.com/en-us/visualstudio/install/workload-component-id-vs-community").get();
        String html = doc.html().substring(doc.html().indexOf("visual-studio-core-editor-included-with-visual-studio-community-2017")-8, 
                                           doc.html().indexOf("unaffiliated-components")-8);
        Document doc2 = Jsoup.parse(html);
        System.out.println(doc2);

Answer 2

I'll just make a small change to @eritrean s answer above. There is small modification to be made for me to get the required output.

document = Jsoup.parse(document.html().substring(document.html().indexOf("visual-studio-core-editor-included-with-visual-studio-community-2017")-26,
                document.html().indexOf("see-also")-8));
System.out.println(document);