Jsoup仅过滤掉一些从html到文本的标签

Question

can any master of jsoup tell me some suggestions to filter html to text/string? I've tried calling text() of Document. But all tags/elements will be filtered. My aim is to filter some specified tags.

ie: I've html text like:

<div>hello<p>world</div>,<table><tr><td>xxx</td></tr>

to get result:

<div>hello<p>world</div>,xxx 

which has filtered tags.

Answer 1

I can't test this right now but I think you want to write a recursive function that steps through the tree and prints each node based on a condition. The following is an example of what it might look like but I expect that you will have to modify it to suit your needs more precisely.

Document doc = JSoup.parse(page_text);
recursive_print(doc.head());
recursive_print(doc.body());

...

private static Set<String> ignore = new HashSet<String>(){{
  add("table");
  ...
}};
public static void recursive_print(Element el){
   if(!ignore.contains(el.className()))
     System.out.println(el.html());
   for(Element child : el.children())
     recursive_print(child);
}

Answer 2

You can use Whitelist to achieve this goal. For example:

Whitelist whiteList = new Whitelist();
whiteList.addTags("div", "p", "td");

It means that all other tags will be removed.