正则表达式 In Java

发布时间：2020-12-14 00:39:32 所属栏目：百科来源：网络整理

导读：java里没有类似python的search 函数怎样得到matched的字符串？ group find/matched判断是否matched. Difference between matches() and find() in Java Regex matches tries to match the expression against the entire string and implicitly add a ^ at

java里没有类似python的search 函数

怎样得到matched的字符串？ group

find/matched判断是否matched.

Difference between matches() and find() in Java Regex

matches tries to match the expression against the entire string and implicitly add a ^ at the start and $ at the end of your pattern,meaning it will not look for a substring.

matches隐含在正则表达式前后增加了： ^ and $

matchesreturn true if the whole string matches the given pattern.findtries to find a substring that matches the pattern.

    /**
     * 从dataStr中获取出所有的电话号码（固话和移动电话），将其放入Set
     * @param dataStr    待查找的字符串
     *  phoneSet    dataStr中的电话号码
     */
    public static void getPhoneNumFromStrIntoSet(String dataStr,Set<String> phoneSet)
    {
        //获得固定电话和移动电话的正则表达式
        String regexp = isPhoneRegexp();
        
        System.out.println("Regexp = " + regexp);
        
        Pattern pattern = Pattern.compile(regexp); 
        Matcher matcher = pattern.matcher(dataStr); 

        找与该模式匹配的输入序列的下一个子序列
        while (matcher.find()) 
        { 
            获取到之前查找到的字符串，并将其添加入set中
            phoneSet.add(matcher.group());
        } 
        System.out.println(phoneSet);
    }

（编辑：李大同）

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