[英]regex pattern in java.matches-method
I need to get the regex pattern for the following sequence of numbers: 我需要获取以下数字序列的正则表达式模式:
X.XXX.XXX-X
Every X
is one number. 每个X
是一个数字。
I've already tried: 我已经尝试过:
pattern: `partnerNumberOnFirstPage = "*.*.*-*"`
if (stringContent.matches(partnerNumberOnFirstPage)){
return true;
} else {
return false;
}
How can I do that? 我怎样才能做到这一点? And do I implement it right? 而且我执行正确吗? I don't want to use *
because I need exactly the number of numbers. 我不想使用*
因为我需要确切的数字数量。
How about: 怎么样:
^\d\.\d\d\d\.\d\d\d-\d$
I'm not sure but I think you have to double escape in java, so: 我不确定,但我认为您必须在Java中加倍转义,所以:
^\\d\\.\\d{3}\\.\\d{3}-\\d$
Lots of ways: 很多方法:
\d\.\d{3}\.\d{3}-\d
or 要么
\d(?:\.\d{3}){2}-\d
^\\d\\.\\d{3}\\.\\d{3}-\\d$
Yes, your implementation looks great! 是的,您的实现看起来很棒!
Also note, you can remove the start/end tags if you need to match anywhere in a string. 另请注意,如果需要在字符串中的任何位置进行匹配,则可以删除开始/结束标签。
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