Setting filters and filter mappings Open Workbrain.ear. Open Workbrain.war. Open web-inf/web.xml. Locate these lines: <filter> <filter-name>EncodingFilter</filter-name> Remove the comments before the <filter>line and after the </filter> line: <!-- ... Locate these lines: <filter-mapping> <filter-name>EncodingFilter</filter-name> Remove the comments before the <filter-mapping> line and after the </filter-mapping> line: <!-- ...