Spring Boot & Thymeleaf with XML Templates - spring-mvc

Question

I have a Spring Boot application with a controller that returns a ModelAndView and Thymeleaf to render templates, where the templates live in /src/main/resources/templates/*.html
This works fine, but How can I configure Spring and/or Thymeleaf to look for xml files instead of html?
If it helps, I'm using Gradle with the org.springframework.boot:spring-boot-starter-web dependency to set things up. I am currently running the server using a class with a main method.

Answer 1

After trying and failing at various bean defs for viewResolver and related things, I finally got this working with a change to my application.yaml file:
spring:
thymeleaf:
suffix: .xml
content-type: text/xml
For those reading this later, you can do similar with your application.properties file (with dot notation in place of the yaml indentation).

Answer 2

This works too :
#Configuration
public class MyConfig
{
#Bean
SpringResourceTemplateResolver xmlTemplateResolver(ApplicationContext appCtx) {
SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
templateResolver.setApplicationContext(appCtx);
templateResolver.setPrefix("classpath:/templates/");
templateResolver.setSuffix(".xml");
templateResolver.setTemplateMode("XML");
templateResolver.setCharacterEncoding("UTF-8");
templateResolver.setCacheable(false);
return templateResolver;
}
#Bean(name="springTemplateEngine")
SpringTemplateEngine templateEngine(ApplicationContext appCtx) {
SpringTemplateEngine templateEngine = new SpringTemplateEngine();
templateEngine.setTemplateResolver(xmlTemplateResolver(appCtx));
return templateEngine;
}
}
And for the usage
#RestController
#RequestMapping("/v2/")
public class MenuV2Controller {
#Autowired
SpringTemplateEngine springTemplateEngine;
#GetMapping(value ="test",produces = {MediaType.APPLICATION_XML_VALUE})
#ResponseBody
public String test(){
Map<String, String> pinfo = new HashMap<>();
Context context = new Context();
context.setVariable("pinfo", pinfo);
pinfo.put("lastname", "Jordan");
pinfo.put("firstname", "Michael");
pinfo.put("country", "USA");
String content = springTemplateEngine.process("person-details",context);
return content;
}
}
Don't forget the template in resources/templates folder
<?xml version="1.0" encoding="UTF-8"?>
<persons >
<person>
<fname th:text="${pinfo['lastname']}"></fname>
<lname th:text="${pinfo['firstname']}"></lname>
<country th:text="${pinfo['country']}"></country>
</person>
</persons>