Hi all ! I would like to use web socket, and I started looking to do so with tomcat API. I'm currently using Tomcat 7.0.37 on Windows Seven, integrated in Eclipse Juno.
I tried to follow the example code from tomcat documentation, and read the associated JavaDoc for package org.apache.catalina.websocket. The example is supposed to be a chat application. Here is the link for the documentation : http://tomcat.apache.org/tomcat-7.0-doc/web-socket-howto.html I'm also using maven for the project, so I added this to my pom.xml : <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-catalina</artifactId> <version>7.0.39</version> <scope>provided</scope> </dependency> First thing that's weird, I get an error message in Eclipse for this line : private class MyMessageInbound extends MessageInbound The error message is "The hierarchy of the type MyMessageInbound is inconsistent", but I'm still able to compile and launch the webapp from Eclipse. I also added the configuration in the web.xml as follow: <servlet> <servlet-name>wsChat</servlet-name> <servlet-class>websocket.chat.ChatWebSocketServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>wsChat</servlet-name> <url-pattern>/websocket/chat</url-pattern> </servlet-mapping> So, I'm able to launch the webapp, but when I go to the chat page, I get an error on the chat board saying "Info: WebSocket closed.". Tomcat log give me the following message: SEVERE: Servlet.service() for servlet [wsChat] in context with path [/websocket-tuto] threw exception [L''exécution de la servlet a lancé une exception] with root cause java.lang.NoSuchMethodError: websocket.chat.ChatWebSocketServlet$MyMessageInbound.<init>(Lwebsocket/chat/ChatWebSocketServlet;Luwebsocket/chat/ChatWebSocketServlet$MyMessageInbound;)V at websocket.chat.ChatWebSocketServlet.createWebSocketInbound(ChatWebSocketServlet.java:34) at org.apache.catalina.websocket.WebSocketServlet.doGet(WebSocketServlet.java:121) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Anyone see what could be my problem, or what I'm doing wrong ? Thanks ! --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
