Replacing xml tag value by regex

Question

I have xml like this and i want to replace carrot tag value by something else i use this expression (<.[^(><.)]+>) but it doesn't work properly what should i change to manage getting value and replacing it with new value?:

<Monkey xmlns="http://urlhere.com/monkeynamespace">
 <foodType>
  <vegtables>
   <carrots>1</carrots>
  </vegtables>
 <foodType>   
</Monkey>

[**TH̘Ë͖́̉ ͠P̯͍̭O̚N̐Y̡ H̸̡̪̯ͨ͊̽̅̾̎Ȩ̬̩̾͛ͪ̈́̀́͘ ̶̧̨̱̹̭̯ͧ̾ͬC̷̙̲̝͖ͭ̏ͥͮ͟Oͮ͏̮̪̝͍M̲̖͊̒ͪͩͬ̚̚͜Ȇ̴̟̟͙̞ͩ͌͝S̨̥̫͎̭ͯ̿̔̀ͅ**](https://stackoverflow.com/a/1732454/1954610) — Tom Lord, Oct 04 '17 at 10:52
i want to make it in nifi replaceText processor and it doesn't support xpath i, i use java — Sagitarius, Oct 04 '17 at 11:01
Don't parse XML using regex; use a real XML parser. See [**How to retrieve element value of XML using Java?**](http://stackoverflow.com/questions/4076910/how-to-retrieve-element-value-of-xml-using-java) or [**How to read XML using XPath in Java**](http://stackoverflow.com/questions/2811001/how-to-read-xml-using-xpath-in-java) — kjhughes, Oct 04 '17 at 15:53

score 8 · Accepted Answer · answered Oct 04 '17 at 11:03

8

You could use a positive lookahead and a positive lookbehind

Example:

(?<=<carrots>).*(?=<\/carrots>)

Demo

answered Oct 04 '17 at 11:03

The fourth bird

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2

this will fail if there is another down the string – koo9 Jan 26 '18 at 22:01
need to add another handle, if there is multiple carrots on the string – himawan_r Jun 22 '18 at 01:55
That is correct. In that case you should make it lazy using `.*?` – The fourth bird Jun 22 '18 at 08:13
2

Thanks for this very simple and intuitive solution – Jon Koops Oct 11 '21 at 10:24

Replacing xml tag value by regex

1 Answers1