Page History

...

Permalink to this page: https://cwiki.apache.org/confluence/x/liklBg

Questions

1. Why
   1. What is the default character encoding of the request or response body?
   2. Why does everything have to be this way?
2. How
   1. How do I change how GET parameters are interpreted?
   2. How do I change how POST parameters are interpreted?
   3. What can you recommend to just make everything work? (How to use UTF-8 everywhere).
   4. How can I test if my configuration will work correctly?
   5. How can I send higher characters in HTTP headers?
3. Troubleshooting
   1. I'm having a problem with character encoding in Tomcat 5

Answers

Why

Anchor
Q1 Q1

What is the default character encoding of the request or response body?

...

1. Set URIEncoding="UTF-8" on your <Connector> in server.xml. References: Tomcat 7 HTTP Connector, Tomcat 7 AJP Connector, Tomcat 8.5 HTTP Connector, Tomcat 8.5 AJP Connector.
2. Set the default request character encoding either in the Tomcat conf/web.xml file or in the web app web.xml file; either by setting <request-character-encoding> (for applications using Servlet 4.0 / Tomcat 9.x+) or by using a character encoding filter.
3. Change all your JSPs to include charset name in their contentType. For example, use <%@page contentType="text/html; charset=UTF-8" %> for the usual JSP pages and <jsp:directive.page contentType="text/html; charset=UTF-8" /> for the pages in XML syntax (aka JSP Documents).
4. Change all your servlets to set the content type for responses and to include charset name in the content type to be UTF-8. Use response.setContentType("text/html; charset=UTF-8") or response.setCharacterEncoding("UTF-8").
5. Change any content-generation libraries you use (Velocity, Freemarker, etc.) to use UTF-8 and to specify UTF-8 in the content type of the responses that they generate.
6. Disable any valves or filters that may read request parameters before your character encoding filter or jsp page has a chance to set the encoding to UTF-8. For more information see https://www.mail-archive.com/users@tomcat.apache.org/msg21117.html.
   
   

...