intellij thymeleaf Namespace th is not bound

Question

I am using IntelliJ IDEA and I have a problem with thymeleaf namespaces. I have created employee form which I am including into other templates so I did not specified namespaces but it works fine when I run my application. Is there any way to change this behaviour. I like to have an auto-complete :-)

Namespace 'th' is not bound example:

score 27 · Accepted Answer · answered Feb 08 '16 at 21:41

27

Also, if you are using Spring you should use the following:

<!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
  <head>
     <title>Hello</title>
  </head>
  <body>
  </body>
</html>

The difference is in the DOCTYPE. See Intellij Idea: Thymeleaf namespace unkown

answered Feb 08 '16 at 21:41

Grigory Kislin

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Is there a new dtd for spring5? – axiopisty May 13 '19 at 05:28
@axiopisty good question. Here https://github.com/thymeleaf/thymeleaf.github.com/tree/master/dtd nothing, concerning sprin 5. – Grigory Kislin May 13 '19 at 17:40
In versions of Intellij > 2017.3 you should not need a doctype (see also: https://stackoverflow.com/a/44804086/474034) – lanoxx Jun 07 '22 at 11:18

score 13 · Answer 2 · edited Feb 16 '16 at 00:08

13

To enable auto completion and IDE support for Thymeleaf, make sure you have enabled the Thymeleaf plugin.

File -> Other Settings -> Config Plugins -> tick Thymeleaf

Also add the namespace in the root tag

<html .... xmlns:th="http://www.thymeleaf.org">

edited Feb 16 '16 at 00:08

riddle_me_this

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answered Sep 11 '15 at 04:35

Faraj Farook

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I can't find this configuration in Intellij 2016. – Rod Lima Mar 28 '16 at 23:04
4

This applies for Ultimate version only, not Community. – nike.laos Mar 07 '17 at 10:38

score 7 · Answer 3 · answered Sep 03 '15 at 21:25

There's no harm defining your fragments in a well formed document (including a html, head, body etc). In fact this is how the Thymeleaf Documentation does it.

This way you can specify the thymeleaf namespace so you get autocomplete, and you can also view your fragments by themselves in the browser, which is useful for prototyping.

score 3 · Answer 4 · answered Dec 10 '21 at 11:03

3

Adding xmlns:sec="http://www.thymeleaf.org" into the html tag helped me. So now it looks like below:

<html xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org"
      lang="en">
<head>

answered Dec 10 '21 at 11:03

Zeynep Yılmaz

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score 0 · Answer 5 · answered Jan 20 '21 at 16:17

If you are using Intellij IDEA, you can also use the JBLHtmlToThymeleaf plugin. With this plugin, you can simply right click on your HTML file and add the required namespace.

Operation steps for this: (on the IDE)

File->Settings->Plugins->Marketplace and search JBLHtmlToThymeleaf

Install JBLHtmlToThymeleaf

After the installation is complete, right click on a desired html file and select JBLHtmlToThymeleaf.

Right click the HTML file

After the process is complete, you will see that the namespace xmlns: th = "http://www.thymeleaf.org" has been added automatically.

Bonus: Also if you want to use Spring Security in HTML file, don't forget to add xmlns: sec = "http://www.thymeleaf.org/extras/spring-security".

intellij thymeleaf Namespace th is not bound

5 Answers5