Question

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How to get UTF-8 working in java webapps?

I have a servlet that receives in the request parameter some special characters. I tried to display them, but I only get question marks instead.

My query string = http://localhost:8080/specialcharacter/quote/startmilesquote?option=côté

I’m displaying

request.getQueryString()
result= option=c%C3%B4t%C3%A9

and

request.getParameter("option")
result=c�t�

I put

request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");

in the servlet
put <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> in the header of the reponse.
And my connector in server.xml is defined as UTF-8.

   <Connector connectionTimeout="20000" port="8080" 
              protocol="HTTP/1.1" redirectPort="8443"  URIEncoding="UTF-8"/>

How can I solve my problem?

Answer 1

Make sure the problem is not in displaying, rather than reading:

• if printing on the console, check if the console has UTF-8 encoding
• if storing in the database, make sure the DB connection is set to UTF-8

(Also, make sure you put the request.setCharacterEncoding(..) before you start using the request)