Get UTF-8 Working in Java Webapps
Problem:
Accessing special characters like Finnish "äöå" and Cyrillic "ЦжФ" in Java webapps requires UTF-8 encoding.
Configuration Steps:
-
Configure Tomcat's server.xml:
- Specify URIEncoding="UTF-8" within the
element to handle URL parameters in UTF-8.
- Specify URIEncoding="UTF-8" within the
-
Implement a CharsetFilter:
- Create a filter that sets the request and response encoding to UTF-8 and intercepts requests without a specified encoding.
-
Set JSP page encoding:
- Add
to web.xml or individual JSP pages.
- Add
-
Include HTML meta tag:
- Specify meta http-equiv='Content-Type' content='text/html; charset=UTF-8' in all XHTML pages to inform the browser about encoding.
-
Configure JDBC connection:
- Set useEncoding=true and characterEncoding=UTF-8 in the JDBC connection string defined in context.xml.
-
Set MySQL database and tables encoding:
- Create the database and tables using CREATE DATABASE and CREATE TABLE statements with CHARSET=utf8 specified.
-
Configure MySQL server:
- Define default-character-set=utf8 in the my.ini or my.cnf configuration files.
-
Check for GET requests:
- Browsers may handle GET requests differently, so consider URL character encoding and the browser's encoding settings.
Additional Resources:
- [HTTP charset](http://java.sun.com/developer/technicalArticles/Intl/HTTPCharset/)
- [MySQL character set syntax](http://dev.mysql.com/doc/refman/5.0/en/charset-syntax.html)
- [Tomcat UTF-8 wiki](http://wiki.apache.org/tomcat/Tomcat/UTF-8)
The above is the detailed content of How Do I Ensure UTF-8 Encoding Throughout My Java Web Application?. For more information, please follow other related articles on the PHP Chinese website!

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