spring-boot hello world is not unicode friendly

[stepancheg]

Take hello world application from spring-boot main page:

package hello;

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;

@Controller
@EnableAutoConfiguration
public class SampleController {

    @RequestMapping("/")
    @ResponseBody
    String home() {
        return "Hello World!";
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(SampleController.class, args);
    }
}

Replace Hello world! with Много букв!, and you get a lot of question marks instead of greeting. Using spring-boot 1.1.8.RELEASE.

[dsyer]

Duplicate of #1182?

[snicoll]

#1182 is for the URI, not the body. @stepancheg we auto-configure the embedded containers to use UTF-8. How are you deploying this hello world app? Using spring-boot-starter-web?

[snicoll]

Interestingly enough, I can reproduce and adding the CharacterEncodingFilter does not change anything, the reply is still ISO-8859-1

curl -i http://localhost:8080
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/plain;charset=ISO-8859-1
Content-Length: 11
Date: Tue, 04 Nov 2014 09:18:04 GMT

The reason why (thanks @bclozel !) is in StringHttpMessageConverter: it does not get a Charset in the provided MediaType so it just uses the default. I have no idea why we don't look for the charSet of the response (and if we should).

[snicoll]

It looks like that configuring that converter to use UTF-8 by default (like Jackson does) is the best option.