How do I preserve line breaks when using jsoup to convert html to plain text?
I have the following code:
public class NewClass {
public String noTags(String str){
return Jsoup.parse(str).text();
}
public static void main(String args[]) {
String strings="<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN \">" +
"<HTML> <HEAD> <TITLE></TITLE> <style>body{ font-size: 12px;font-family: verdana, arial, helvetica, sans-serif;}</style> </HEAD> <BODY><p><b>hello world</b></p><p><br><b>yo</b> <a href=\"http://google.com\">googlez</a></p></BODY> </HTML> ";
NewClass text = new NewClass();
System.out.println((text.noTags(strings)));
}
And I have the result:
hello world yo googlez
But I want to break the line:
hello world
yo googlez
I have looked at jsoup's TextNode#getWholeText() but I can't figure out how to use it.
If there's a <br> in the markup I parse, how can I get a line break in my resulting output?
Answer
The real solution that preserves linebreaks should be like this:
public static String br2nl(String html) {
if(html==null)
return html;
Document document = Jsoup.parse(html);
document.outputSettings(new Document.OutputSettings().prettyPrint(false));//makes html() preserve linebreaks and spacing
document.select("br").append("\\n");
document.select("p").prepend("\\n\\n");
String s = document.html().replaceAll("\\\\n", "\n");
return Jsoup.clean(s, "", Whitelist.none(), new Document.OutputSettings().prettyPrint(false));
}
It satisfies the following requirements:
- if the original html contains newline(\n), it gets preserved
- if the original html contains br or p tags, they gets translated to newline(\n).