如何调试org.thymeleaf.exceptions.TemplateInputException？

Question

I have a new project and it's my first time using spring MVC and Thymeleaf. The error message that I'm getting seems obvious:

org.thymeleaf.exceptions.TemplateInputException: Error resolving template "index", template might not exist or might not be accessible by any of the configured Template Resolvers

I have googled a lot and saw many people with similar issues. However, none of the solutions helped me find out why my setup does not work.

Instead of classpath:/templates I have also tried variations like templates and /templates

some questions:

• What is the "basedir" from which the relative path is being looked for?
• Is it possible to run spring in debug to see how these kind of configurations are set? ie call when I call localhost:8080 and there's a breakpoint somewhere: would it be possible to see how the file index.html is being looked for?

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edit On line 23 in the document on the right (BetterCommuteApplication.java) you can see that Intellij is able to resolve the reference to my template file.

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This screenshot shows my configuration and I think it should suffice as enough information to get the answer.

Thank you for your time! :-)

Answer 1

ugh, I tried to combine Spring boot with thymeleaf manually here. (I'm used to developing back-ends ^^") This doesn't make much sense as initialising spring MVC does this right out of the box.

The solution was to init this as springMVC, use @Controller instead of @ Restcontroller because I want the class to be handled as MVC class... and the return could be as simple as return 'index' (because my html file in the default location is called index.html)

basically I would have known, if I'd simply followed the tutorial on SpringMVC. .. but hey, why would anyone RTFM? :-)

so it looks like this: