Hello, I am trying to configure DB pooling in Tomcat 6. The combination of the elements below causes the exception: java.lang.ClassNotFoundException: javax.servlet.http.HttpServlet
I have followed the directions on http://tomcat.apache.org/tomcat-6.0-doc/jndi-datasource-examples-howto.html thoroughly so I am confused. The only thing I am doing a little different is I have placed my db resource in the conf/context.xml , but I have also seen the same issue when placed in my META-INF/context.xml Any ideas will be greatly appreciated! I think it's the entry in context.xml that causes the issue. ** conf/context.xml: <Resource name="jdbc/tabscorp_tabsdb" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="login" password="pass" driverClassName="com.mysql.jdbc.Driver" logAbandoned="true" removeAbandoned="true" removeAbandonedTimeout="60" url="jdbc:mysql://localhost:3306/mydb?autoReconnect=true"/> ** webapp/tabs/WEB-INF/web.xml: <resource-ref> <description>TABS DB Connection</description> <res-ref-name>jdbc/tabscorp_tabsdb</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> ** Java code: //use the pool InitialContext cxt = new InitialContext(); if ( cxt == null ) { throw new Exception("InitialContext is NULL"); } DataSource ds = (DataSource) cxt.lookup( "java:/comp/env/jdbc/tabscorp_tabsdb" ); if ( ds == null ) { throw new Exception("Data source not found"); } Connection conn = ds.getConnection(); stmt = connection.createStatement(); ** Full Exception: HTTP Status 500 - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Error allocating a servlet instance org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) java.lang.Thread.run(Thread.java:619) root cause java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:621) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) java.net.URLClassLoader.defineClass(URLClassLoader.java:260) java.net.URLClassLoader.access$000(URLClassLoader.java:56) java.net.URLClassLoader$1.run(URLClassLoader.java:195) java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:188) java.lang.ClassLoader.loadClass(ClassLoader.java:307) sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) java.lang.ClassLoader.loadClass(ClassLoader.java:252) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1302) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) java.lang.Thread.run(Thread.java:619) root cause java.lang.ClassNotFoundException: javax.servlet.http.HttpServlet java.net.URLClassLoader$1.run(URLClassLoader.java:200) java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:188) java.lang.ClassLoader.loadClass(ClassLoader.java:307) sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) java.lang.ClassLoader.loadClass(ClassLoader.java:252) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:621) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) java.net.URLClassLoader.defineClass(URLClassLoader.java:260) java.net.URLClassLoader.access$000(URLClassLoader.java:56) java.net.URLClassLoader$1.run(URLClassLoader.java:195) java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:188) java.lang.ClassLoader.loadClass(ClassLoader.java:307) sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) java.lang.ClassLoader.loadClass(ClassLoader.java:252) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1302) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) java.lang.Thread.run(Thread.java:619) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.20 logs. Apache Tomcat/6.0.20
