dongliuxia9495
2019-05-17 02:41
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Golang中的正则表达式斜线

I have two links:

1: /aaa/bbbb/ccccc.htm
2: /xxx/yyy.htm

What regex is able to match the second link?

I have tried:

^\/.*\/.*[^\/].* 

But, it match all of them.

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我有两个链接:

  1:/ aaa /  bbbb / ccccc.htm 
2:/xxx/yyy.htm
  
 
 

哪些正则表达式能够匹配第二个链接? < p>我尝试过:

  ^ \ /.* \ /.* [^ \ /]。* 
   
 
  

但是,它与所有匹配。

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  • dongshimao7115 2019-05-17 03:33
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    I'm guessing that we might want to pass both URLs, which in that case we would start with:

    (\/[a-z]+)?(?:\.htm)?
    

    We can then add more boundaries, if you wish.

    RegEx

    If this wasn't your desired expression, you can modify/change your expressions in regex101.com.

    enter image description here

    RegEx Circuit

    jex.im visualizes regular expressions:

    enter image description here

    JavaScript Group Breakup

    const regex = /((\/[a-z]+)?(?:\.htm)?)/gm;
    const str = `/aaa/bbbb/ccccc.htm
    /xxx/yyy.htm`;
    const subst = `Group #1: $1
    Group #2: $2
    `;
    
    // The substituted value will be contained in the result variable
    const result = str.replace(regex, subst);
    
    console.log('Substitution result: ', result);


    If you only wish to pass the second URL and fail the first one, you can simply add some boundaries to your expression, maybe something similar to this would work:

    ^\/[a-z]+\/[a-z]+.htm$
    

    enter image description here

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