You can try to configure org.apache.catalina.filters.SetCharacterEncodingFilter
in your web.xml
as next:
<filter>
<filter-name>Set Character Encoding</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>
<init-param>
<param-name>ignore</param-name>
<param-value>false</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Set Character Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Filter that sets the character encoding to be used in parsing the
incoming request, either unconditionally or only if the client did not
specify a character encoding.
More info about this filter here