java正则表达式使用示例

2019-11-26 15:36:12

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package com.hongyuan.test;

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

public class RegexTest {
public static void main(String[] args) {
  String str="<html><head><title>regex test</title></head><body><p>this is a simle regex test</p></body></html>";

  //拆分字符串
  String[] splitStr=Pattern.compile("[</?|>]").split(str);
  for(int i=0;i<splitStr.length;i++){
   System.out.print(splitStr[i]+" ");
  }
  System.out.println();

  //判断字符串是否与制定模式匹配
  boolean isMatching = Pattern.compile("^<(//w*)>.*<///1>$").matcher(str).matches();
  System.out.println(isMatching);

  //替换字符串
  String repStr=Pattern.compile("<(/?)p>").matcher(str).replaceAll("<$1h1>");
  System.out.println(repStr);

  //提取字符串
  Matcher m = Pattern.compile("<title>(.*)</title>").matcher(str);
  while(m.find()){
   System.out.println(m.group(1));
  }
}
}