- public class Test {
- public static void main(String[] arg){
- String res = "abc adc aac acc abbc";
- String pattern = "a\\wc";
- //String pattern = "awc";
- //简单用法的示范
- int size = ZZUtil.init(res, pattern).size();
- boolean find = ZZUtil.init(res, pattern).find();
- System.out.println("find-->"+find);
- System.out.println("size-->"+size);
- //获取匹配到的字符串
- System.out.println("------下面是get相关------");
- ZZUtil zz = ZZUtil.init(res, pattern);
- System.out.println("all-->"+zz.get(-1));
- System.out.println("all-->"+zz.get(0));
- System.out.println("all-->"+zz.get(1));
- System.out.println("all-->"+zz.get(2));
- System.out.println("all-->"+zz.get(3));
- System.out.println("all-->"+zz.get(4));
- //替换字符串
- System.out.println("------下面是replace相关------");
- String replacement = "诶嘿嘿";
- System.out.println("替换所有:"+zz.replaceAll(replacement));
- System.out.println("替换第一个:"+zz.replaceFirst(replacement));
- System.out.println("替换最后一个:"+zz.replaceTail(replacement));
- System.out.println("替换第2个:"+zz.replace(1, replacement));
- System.out.println("替换第3个:"+zz.replace(2, replacement));
- System.out.println("替换第10个(并没有10个):"+zz.replace(9, replacement));
- //实用功能
- System.out.println("------下面是匹配整个字符串------");
- String p = "1\\d{10}";//验证手机号
- String e = "[email protected]\\w+.com";//验证邮箱
- System.out.println("验证手机号18202020202:"+ZZUtil.init("18202020202", p).match());
- System.out.println("验证手机号1320202020:"+ZZUtil.init("1820202020", p).match());
- System.out.println("验证手机号20202020202:"+ZZUtil.init("20202020202", p).match());
- System.out.println("验证邮箱[email protected]:"+ZZUtil.init("[email protected]", e).match());
- System.out.println("验证邮箱[email protected]:"+ZZUtil.init("[email protected]", e).match());
- System.out.println("验证邮箱www.baidu.com:"+ZZUtil.init("www.baidu.com", e).match());
- }
- }
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
- /**
- * 正则表达式工具类
- * @author lu
- *
- */
- public class ZZUtil {
- private static ZZUtil zz;
- public static ZZUtil init(CharSequence res,String pattern){
- if (zz==null||(!res.equals(zz.res)||!pattern.equals(zz.pattern))) {
- //在没有实例或内容不同的时候新建一个实例
- zz = new ZZUtil(res, pattern);
- }
- return zz;
- }
- private CharSequence res;
- private String pattern;
- private Pattern p;
- private Matcher m;
- private int size = 0;
- private String[] list;//所有匹配到的字符串
- private ZZUtil(CharSequence res,String pattern){
- this.res = res;
- this.pattern = pattern;
- p = Pattern.compile(pattern);
- m = p.matcher(res);
- while(m.find()){
- size++;
- }
- list = new String[size];
- m.reset();
- for (int i = 0; i < size; i++) {
- if(m.find())list[i] = m.group();
- }
- }
- /**是否能匹配到至少一个*/
- public boolean find(){
- return size>0;
- }
- /**匹配整个字符串,必须整个字符串满足正则表达式才算true*/
- public boolean match(){
- return find()&&get(0).equals(res);
- }
- /**获取所有匹配的字符串个数*/
- public int size(){
- return size;
- }
- /**获取所有匹配到的字符串*/
- public String[] getAll(){
- return list;
- }
- /**获取匹配到的第N个字符串*/
- public String get(int index){
- if (index<0) {
- System.out.println("请不要开玩笑");
- return null;
- }
- if (index>=size) {
- System.out.println("并没有匹配到辣么多");
- return null;
- }
- return list[index];
- }
- /**替换所有匹配到的字符串*/
- public String replaceAll(String replacement){
- return m.replaceAll(replacement);
- }
- /**替换第一个匹配到的字符串*/
- public String replaceFirst(String replacement){
- return m.replaceFirst(replacement);
- }
- /**替换最后一个匹配到的字符串*/
- public String replaceTail(String replacement){
- return replace(size-1, replacement);
- }
- /**替换第N个匹配到的字符串*/
- public String replace(int index,String replacement){
- m.reset();
- boolean isFind = false;
- while(index>=0){
- isFind = m.find();
- index--;
- }
- if(isFind){
- StringBuffer sb = new StringBuffer();
- m.appendReplacement(sb, replacement);
- m.appendTail(sb);
- return sb.toString();
- }
- return (String) res;
- }
- }
来源: http://www.phpxs.com/code/1001771/