Springsource Tools Suite thymeleaf tags are unknown

Question

I am usind Springsource Tools Suite and I want to develop a maven based web project. The parent archetype creator has used thymeleaf tags (th:block). It is working but I get warnings in STS that say: Unkown tag (th:block). How can i fix this warning?

Answer 1

Since I cannot add comment, I will write it here:

Check three things:

1. Does maven contain thymeleaf dependencies? something like this.

2. Do you have Thymeleaf resolver properly set: This is annotation example:

   @Bean
   public ThymeleafViewResolver viewResolver() {
       ThymeleafViewResolver thymeleafViewResolver = new ThymeleafViewResolver();
       thymeleafViewResolver.setTemplateEngine(templateEngine());
       thymeleafViewResolver.setCharacterEncoding("UTF-8");
       return thymeleafViewResolver;
   }
   

3. Does your view have proper html tag:

   html xmlns="http://www.w3.org/1999/xhtml"
        xmlns:th="http://www.thymeleaf.org"
   

Answer 2

In case of HTML, DTD wan't be parsed.

Try using Eclipse plugin (remember to add Thymeleaf nature to project): https://github.com/thymeleaf/thymeleaf-extras-eclipse-plugin