CODEWITHSUNDEEP
spring-bootthymeleafpath-variables
krenkz
krenkz

Reputation: 470

How to automatically escape special characters in a thymeleaf pathvariable?

I am sending a string pathvariable from a thymeleaf href template to a Spring-boot controller but if a URL is contained in this string, its slash characters "//" get interpreted as a part of the href URL. Is there a way how to get these symbols automatically escaped?

thymeleaf

<a th:href="@{/displayComments/{comments}(comments=${excerpt.comments})}">Comments</a>

where

comments=${excerpt.comments} = 'https://www.youtube.com/watch%3Fv=j1wgaFJ0750'

and the URL is reported with There was an unexpected error (type=Not Found, status=404)

http://localhost:8080/displayComments/https://www.youtube.com/watch%3Fv=j1wgaFJ0750

Upvotes: 1

Views: 1464

Answers (1)

andrewJames
andrewJames

Reputation: 21918

Thymeleaf will automatically URL encode query parameters (content following a ?).

But here you want to URL encode a URL path segment - so you need to explicitly handle that:

th:href="@{/displayComments/{comments}(comments=${#uris.escapePathSegment(excerpt.comments, 'UTF-8')})}"

I recommend using the version of the function which takes an encoding parameter, so you can explicitly use UTF-8 and avoid being tripped up by unexpected default encodings.

Upvotes: 2

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