struts+spring+hibernate出现的问题,请高手帮忙看看,谢谢大家了

启动完tomcat后,运行时出现下面的错误,请高手帮忙看看,到底是怎么回事啊2008-03-20 19:05:45,059 [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/bookstoressh].[jsp]]-[WARN] Servlet.service() for servlet jsp threw exception
java.io.UnsupportedEncodingException: EUC_CN
at sun.io.Converters.getConverterClass(Converters.java:218)
at sun.io.Converters.newConverter(Converters.java:251)
at sun.io.ByteToCharConverter.getConverter(ByteToCharConverter.java:68)
at java.lang.StringCoding.decode(StringCoding.java:224)
at java.lang.String.<init>(String.java:405)
at java.lang.String.<init>(String.java:433)
at org.apache.catalina.connector.Request.setCharacterEncoding(Request.java:1427)
at org.apache.catalina.connector.RequestFacade.setCharacterEncoding(RequestFacade.java:304)
at com.ascent.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:30)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285)
at java.lang.Thread.run(Thread.java:595)
2008-03-20 19:05:45,429 [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/bookstoressh].[default]]-[WARN] Servlet.service() for servlet default threw exception
java.io.UnsupportedEncodingException: EUC_CN
at sun.io.Converters.getConverterClass(Converters.java:218)
at sun.io.Converters.newConverter(Converters.java:251)
at sun.io.ByteToCharConverter.getConverter(ByteToCharConverter.java:68)
at java.lang.StringCoding.decode(StringCoding.java:224)
at java.lang.String.<init>(String.java:405)
at java.lang.String.<init>(String.java:433)
at org.apache.catalina.connector.Request.setCharacterEncoding(Request.java:1427)
at org.apache.catalina.connector.RequestFacade.setCharacterEncoding(RequestFacade.java:304)
at com.ascent.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:30)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285)
at java.lang.Thread.run(Thread.java:595)