Tomcat has a HTTP Post bug?

[Jörg Kiegeland]

As I read, that Tomcat would need to be configured to support 
international characters in a HTTP Get, I determined to use a HTTP Post 
instead.
Testing our Solr integration worked with testcases using Jetty 
perfectly, however it turned out that HTTP Post in combination with a 
query containing international characters is not supported by Tomcat (I 
get 0 results back).

So I finally use HTTP Get to do queries, with an additional configuring 
of conf/server.xml. This however has the disatvantage that queries with 
a char length of >1000 do not always work.

Is there perhaps another configuration of Tomcat requried but not 
described in the Solr Wiki to use international chars in a Post query?