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Java: RegEx Problem (using the '.' all character symbol)

I have some document stored as a large String. In the String I have some inline XML tags and I want to get out the words inbetween the tags. The documents may also contain HTML tags, as the documents are often web sites.

Example Document:

"< tr > My name is < b >< PERSON >Bobby< /PERSON >< /b >, I live in the USA."

Current RegEx:

Pattern p = Pattern.compile("<(LOCATION|PERSON|ORGANIZATION)>[\\w[ '\"/\\!%$\\(\\)\\-\\+]]*</(LOCATION|PERSON|ORGANIZATION)>");

Matcher m = p.matcher("I'm <PERSON>Graham Brown</PERSON> I went to the <LOCATION>USA'S</LOCATION>");

while(m.find()){
    System.out.println(m.group());
}

Result = < PERSON >Bobby< /PERSON > < LOCATION >USA< /LOCATION >

This works fine with pretty much most puntuation and grammer, but the Regex should allow any character pattern to be found between the tags. When I try using '.' (any character), as below it returns the whole String.

"< tr > My name is < b >< PERSON >Bobby< /PERSON >< /b >, I live in the USA."

 Pattern p = Pattern.compile("<(LOCATION|PERSON|ORGANIZATION)>.</(LOCATION|PERSON|ORGANIZATION)>");

How do I return any characters between the angular openinng and closing tags?

EDIT: Thanks for your responses. Just and for helping get the correct answer. For clarification I have marked Named Entites using NER. If you are unware of what this is please see some of the papers I have referenced at the bottom.

All I am interested in is getting the text between the three opening and closing tags. There are no other tags and the documents are not XML files and I am not parsing all the HTML tags nor I am I interested in them. All I am interested in is parsing the XML tags that I have created hence I though RegEx would be the simplest way to do s开发者_如何学Co.

Papers to be added later...


Put a question mark after .*? for non-greedy processes.

Pattern p = Pattern.compile("<(LOCATION|PERSON|ORGANIZATION)>.*?</(LOCATION|PERSON|ORGANIZATION)>");

PS: I am just correcting your regex, but it does not mean it's the solution. Using parsers are always better idea.


Please use an XML parser for XML snippets. It's the right tool for your problem.

Edit: And use a HTML sanitizer to preprocess the HTML file. Additionally define a strict XML schema for the XML to ensure the XML structure.

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