How to show localization messages with parameters in Spring 3 / Thymeleaf
You can even use a calculated message key as a parameter:
<p th:text="#{messages.msg1(${param1})}"></p><p th:text="#{messages.msg2(${param2},${param3})}"></p><p th:text="#{messages.msg3(#{${param4}})}"></p>Above, the parameter of [msg3] is a message key [#{key}] where key is itself calculated [${param4}]. The benefit is that you can insert internationalized calculated fragments in an internationalized message.
If you need to pass an array of parameters where you don't know the size of the array then you can use:
<p th:text="${#messages.msgWithParams(messageKey, messageParams)}"></p><!-- or --><p th:text="${#messages.msgOrNullWithParams(messageKey, messageParams)}"></p>https://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.html#messages-1