Spring MVC response encoding issue

Question

In last few hours I've read a lot concerning this topic, and so far nothing has worked. I'm trying to return response containing "odd" some characters. Here is example of that, quite simple :

@ResponseBody
    @RequestMapping(value="test")
    public String test(){
        String test = "čćžđš";
        System.out.println(test);
        logger.info(test);
        return test;
    }

This is my web.xml, because I found some answers where CharacterEncodingFilter helped(not in my case though). I used POST method because I read this applies to POST.

Also found this answer(related). Didn't help as well.

When I debug it the correct value appears, but when I print it doesn't as it can be seen below:

When I test it from jmeter, the response seems to be OK, Content-Type is text/html;charset=UTF-8

Here is a screenshot of that as well. http://i56.tinypic.com/14lt653.jpg

I think the right way is to return UTF-8, maybe I'm wrong.

Solution 1

After few days of this I just had "who's your daddy moment". It came from reading spring 3.0 reference, I had nothing else to try so why not go trough entire documentation.. and combination of @axtavt answer :

Who sets response content-type in Spring MVC (@ResponseBody)

Changed original solution :

public class EncodingPostProcessor implements BeanPostProcessor {
    public Object postProcessBeforeInitialization(Object bean, String name)
            throws BeansException {
        if (bean instanceof AnnotationMethodHandlerAdapter) {
            HttpMessageConverter<?>[] convs = ((AnnotationMethodHandlerAdapter) bean).getMessageConverters();
            for (HttpMessageConverter<?> conv: convs) {
                if (conv instanceof StringHttpMessageConverter) {
                    ((StringHttpMessageConverter) conv).setSupportedMediaTypes(
                        Arrays.asList(new MediaType("text", "html", 
                            Charset.forName("UTF-8"))));
                }
            }
        }
        return bean;
    }

To :

public class EncodingPostProcessor implements BeanPostProcessor {
    public Object postProcessBeforeInitialization(Object bean, String name)
            throws BeansException {
        if (bean instanceof AnnotationMethodHandlerAdapter) {
            HttpMessageConverter<?>[] convs = ((AnnotationMethodHandlerAdapter) bean).getMessageConverters();
            for (HttpMessageConverter<?> conv: convs) {
                if (conv instanceof StringHttpMessageConverter) {
                    ((StringHttpMessageConverter) conv).setSupportedMediaTypes(
                        Arrays.asList(new MediaType("text", "plain", 
                            Charset.forName("UTF-8"))));
                }
            }
        }
        return bean;
    }

Darn spring!!! but still I'll continue to use it.

Solution 2

Instead @ResponseBody use ResponseEntity.

@RequestMapping(value="test")
public ResponseEntity<String> test(){
    String test = "čćžđš";
    System.out.println(test);
    logger.info(test);
    HttpHeaders responseHeaders = new HttpHeaders();
    responseHeaders.add("Content-Type", "application/json; charset=UTF-8");
    return ResponseEntity<String>(test,responseHeaders, HttpStatus.OK);
}

Solution 3

My simple solution:

@RequestMapping(value="test")
public ModelAndView test(){
  String test = "čćžđš";
  ...
  ModelAndView mav = new ModelAndView("html_utf8");
  mav.addObject("responseBody", test);
}

and the view html_utf8.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>${responseBody}

No additional classes and configuration.
And You can also create another view (for example json_utf8) for other content type.

Comments

[ant]

thanks, your answer also got me thinking and eventually to solution.

[ant]

thansk but I'm not using this service to produce html at the end. I consume it from android phone, sending it json string as plain text