Odd, I did not explicitly enable the security manager, but this makes sense. I try logging directly from my servlet (by doing a stack trace into a log file), which seems to be causing this issue.
thanks! On Sat, Jul 18, 2009 at 6:13 PM, David Smith <d...@cornell.edu> wrote: > Oh... and I see it looks like you have the JVM's security manager turned > on. Have you made any adjustments to conf/catalina.policy? What's in > your logs when your webapp is started? > > --David > > David Smith wrote: > > I really doubt the database pooling is causing the issue. More likely > > your deployment is doing something to remove the servlet-api.jar or > > duplicating it somewhere. What do you have in tomcat's lib directory > > and in your webapp's WEB-INF/lib directory? > > > > --David > > > > Lucas Vickers wrote: > > > >> 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 > >> > >> > >> > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > > -- > David Smith > Programmer/Analyst > College of Agriculture and Life Sciences > Cornell University > B32 Morrison Hall > Ithaca, NY 14853 > Phone: (607) 255-4334 > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
