/**
 * User: igor.kostromin
 * Date: 22.08.12
 * Time: 12:11
 *
 * Differs from StringHttpMessageConverter only in default charset specifying feature.
 */
public final class ConfigurableStringHttpMessageConverter extends AbstractHttpMessageConverter<String> {
 
    private Charset defaultCharset;
 
    public Charset getDefaultCharset() {
        return defaultCharset;
    }
 
	private final List<Charset> availableCharsets;
 
	private boolean writeAcceptCharset = true;
 
	public ConfigurableStringHttpMessageConverter() {
		super(new MediaType("text", "plain", StringHttpMessageConverter.DEFAULT_CHARSET), MediaType.ALL);
        defaultCharset = StringHttpMessageConverter.DEFAULT_CHARSET;
		this.availableCharsets = new ArrayList<Charset>(Charset.availableCharsets().values());
	}
 
    public ConfigurableStringHttpMessageConverter(String charsetName) {
        super(new MediaType("text", "plain", Charset.forName(charsetName)), MediaType.ALL);
        defaultCharset = Charset.forName(charsetName);
		this.availableCharsets = new ArrayList<Charset>(Charset.availableCharsets().values());
    }
 
	/**
	 * Indicates whether the {@code Accept-Charset} should be written to any outgoing request.
	 * <p>Default is {@code true}.
	 */
	public void setWriteAcceptCharset(boolean writeAcceptCharset) {
		this.writeAcceptCharset = writeAcceptCharset;
	}
 
	@Override
	public boolean supports(Class<?> clazz) {
		return String.class.equals(clazz);
	}
 
	@Override
	protected String readInternal(Class clazz, HttpInputMessage inputMessage) throws IOException {
		Charset charset = getContentTypeCharset(inputMessage.getHeaders().getContentType());
		return FileCopyUtils.copyToString(new InputStreamReader(inputMessage.getBody(), charset));
	}
 
	@Override
	protected Long getContentLength(String s, MediaType contentType) {
		Charset charset = getContentTypeCharset(contentType);
		try {
			return (long) s.getBytes(charset.name()).length;
		}
		catch (UnsupportedEncodingException ex) {
			// should not occur
			throw new InternalError(ex.getMessage());
		}
	}
 
	@Override
	protected void writeInternal(String s, HttpOutputMessage outputMessage) throws IOException {
		if (writeAcceptCharset) {
			outputMessage.getHeaders().setAcceptCharset(getAcceptedCharsets());
		}
		Charset charset = getContentTypeCharset(outputMessage.getHeaders().getContentType());
		FileCopyUtils.copy(s, new OutputStreamWriter(outputMessage.getBody(), charset));
	}
 
	/**
	 * Return the list of supported {@link Charset}.
	 *
	 * <p>By default, returns {@link Charset#availableCharsets()}. Can be overridden in subclasses.
	 *
	 * @return the list of accepted charsets
	 */
	protected List<Charset> getAcceptedCharsets() {
		return this.availableCharsets;
	}
 
	private Charset getContentTypeCharset(MediaType contentType) {
		if (contentType != null && contentType.getCharSet() != null) {
			return contentType.getCharSet();
		}
		else {
			return defaultCharset;
		}
	}
}

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <util:list>
                <bean class="ru.dz.mvk.util.ConfigurableStringHttpMessageConverter">
                    <constructor-arg index="0" value="UTF-8"/>
                </bean>
                <bean class="org.springframework.http.converter.FormHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.BufferedImageHttpMessageConverter"/>
                <!-- json converter (for application/json multimedia type) -->
                <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
                <!-- xml converter (for application/xhtml+xml)-->
                <bean class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
                    <property name="marshaller" ref="xstreamMarshaller"/>
                    <property name="unmarshaller" ref="xstreamMarshaller"/>
                </bean>
            </util:list>
        </property>
</bean>