apache-tiles

I have an already existing client module with apache tiles and thymeleaf, what works well. I wanted to convert it to spring-boot and wanted to do it step by step, but I am really stucking with it. I dont want to change to much once, I would love it when someone can tell me, what step I should do first and bring it to run. I already tried to write the servlets in javaConfig, but I am stucking then too. Maybe someone can help me please. If more information is needed, please dont hesitate to ask. Other question would be, do I need to change from xml to javaconfig? I would prefer the most easy way

I want to display simple text on a page and as such I want to return the Content-Type as text/plain . Using the code below, I see plain text on the page, however the return Content-Type is still text/html . How can I fix this? NOTE: I'm using Tiles with Spring MVC. The returned "m.health" points to a tiles def that maps to a health.jsp which only contains the 1 line below. UPDATE NOTE : I have no control over the Content-Type or Accept values in the HTTP Header request. I want my response to return text/plain no matter what kind of request comes in. Controller: @RequestMapping(value = "/m