正则排除字符串

排除字符串 abc

((?!abc).)*

排除字符串abc或者def

((?!(abc|def)).)*

取出想取出内层的p标签 ： <p>吃饭</p>

比如  <p><p>吃饭</p></p>

package com.cases;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class P {

	public static void main(String[] args) {
		String p= "<p><p>吃饭</p></p>";

		Pattern pattern = Pattern.compile("\\<p\\>((?!\\<p\\>).)*?\\</p\\>");
		Matcher matcher = pattern.matcher(p);

		while (matcher.find()) {
			String s = matcher.group(0);
			System.out.println(s);
		}
	}
}