I have the same issue and just verified how it happens.
I compare the tomcat log file with the tomcat access log file
66.249.88.115 - - [15/Jan/2016:09:09:20 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.95 - - [15/Jan/2016:09:09:21 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.105 - - [15/Jan/2016:09:09:35 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.95 - - [15/Jan/2016:09:09:39 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.95 - - [15/Jan/2016:09:09:43 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.95 - - [15/Jan/2016:09:09:48 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.115 - - [15/Jan/2016:09:09:55 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.105 - - [15/Jan/2016:09:10:02 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.115 - - [15/Jan/2016:09:10:11 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
66.249.88.115 - - [15/Jan/2016:09:10:20 +0100] "POST /datalint/service/user
HTTP/1.1" 500 57
15-Jan-2016 09:09:20.215 SEVERE [http-apr-443-exec-100]
org.apache.catalina.core.ApplicationContext.log Exception while dispatching
incoming RPC call
javax.servlet.ServletException: Character Encoding is 'text/'. Expected
'UTF-8'
at
com.google.gwt.user.server.rpc.RPCServletUtils.checkCharacterEncodingIgnoreCase(RPCServletUtils.java:439)
at ...
15-Jan-2016 09:09:21.388 SEVERE [http-apr-443-exec-96]
org.apache.catalina.core.ApplicationContext.log Exception while dispatching
incoming RPC call
javax.servlet.ServletException: Character Encoding is 'text/'. Expected
'UTF-8'
at ...
...
15-Jan-2016 09:10:20.327 SEVERE [http-apr-443-exec-97]
org.apache.catalina.core.ApplicationContext.log Exception while dispatching
incoming RPC call
javax.servlet.ServletException: Character Encoding is 'text/'. Expected
'UTF-8'
at ...
It appears to be google* proxy servers*, you can *ignore* it. A proxy
server should never access the user service on my site.
On Wednesday, December 30, 2015 at 10:53:19 PM UTC+1, Ed wrote:
>
> @Thomas: thanks for the tips, I will perform some logging of the
> Content-Type to see where it's coming from.
>
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