My grails app will not decode request parameters correctly.
In config.groovy:
grails.views.gsp.encoding = \"UTF-8\" grails
As fas as no final conclusion made, I'd like to share my expierence in the same situation. Here one can find more discussion.
I my case, I have dev environment under the windows on local pc including local MySQL. Production env - Centos 6, MySQL, Tomcat 6 behind Apache.
In dev environment - everything was o'k, but on production - no.
The only thing that help me - was set autoreconnect=true&useUnicode=true&characterEncoding=UTF-8 additionally to recommendations both for Tomcat URIEncoding='UTF-8'
So, the problem was in correct settings java Driver for MySQL.
You need to add URIEncoding='UTF-8' to the Connector elements in conf/server.xml, e.g.
<Connector port='8080' protocol='HTTP/1.1' connectionTimeout='20000'
redirectPort='8443' URIEncoding='UTF-8' />
This is described here: https://wiki.apache.org/tomcat/FAQ/CharacterEncoding
edit application.properties
add(update) line:
plugins.webxml=1.4.1