json validation with utf-8 error messages

[Alireza Fattahi]

Hi,

The characters of error messages with json validation and a utf-8 error message 
is not displayed correctly.
I added 
    <filter>
        <filter-name>SetEncoding</filter-name>
        
<filter-class>org.apache.catalina.filters.SetCharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>

and
    <filter-mapping>
        <filter-name>SetEncoding</filter-name>
        <url-pattern>*</url-pattern>
    </filter-mapping>

But it did not fix the issue.

Any comments?!

 
~Regards,
~~Alireza Fattahi