[Tomcat, HTTPD, Servlets & JSP] - list all active HTTP-Sessions
by thomas78
Hi,
I tried to view all acitve HTTP-Sessions. but I get an very strange error:
here is the code i used:
MBeanServer server = MBeanServerLocator.locateJBoss();
| ObjectName oname = new ObjectName("jboss.web:type=Manager,path=/,host=localhost");
|
| String sessionids = (String)server.invoke(oname, "listSessionIds", new Object[] {}, new String[] {});
| StringTokenizer strtok = new StringTokenizer(sessionids, " ");
|
|
| String description = "";
| String sessionid = "";
| while (strtok.hasMoreTokens()){
| sessionid = strtok.nextToken();
| String name = "pa_bean";
| description += "ID: " + sessionid;
| description += ", last accessed: " + server.invoke(oname, "getLastAccessedTime", new Object[] {sessionid.trim()}, new String[] {"java.lang.String"}).toString();
| String param[] = {sessionid, name};
| String signature[] = {"java.lang.String", "java.lang.String"};
| PA_Bean pa_bean = (PA_Bean)server.invoke(oname, "getSessionAttribute", param, signature);
| description += ", pa_bean: " + pa_bean;
| }
| logger.debug("desc: " + description);
| }catch (Exception ex){logger.fatal(ex.getMessage(), ex);}
the get last accessed time is working fine. just the getSessionAttribute results in the folllowing error:
java.lang.ClassCastException: java.lang.String
| at com.sonydadc.securom.pa.server.PA_Bean.getSessionlist(PA_Bean.java:1897)
| at com.sonydadc.securom.pa.server.servlet.SecuROM_portal.executeListSessionsRequest(SecuROM_portal.java:916)
| at com.sonydadc.securom.pa.server.servlet.SecuROM_portal.doIt(SecuROM_portal.java:983)
| at com.sonydadc.securom.pa.server.servlet.SecuROM_portal.doGet(SecuROM_portal.java:1049)
| at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
| at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| 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:214)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
| at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
| at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
| at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
| at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:81)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
| at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:177)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
| at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
| at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
| at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
| at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
| at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
| at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
| at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
| at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
| at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
| at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
| at java.lang.Thread.run(Thread.java:595)
the error occurs exactly in the line, where I invoke the getSessionAttribute.
can anyone help me with this problem?
best regards,
Thomas
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19 years, 7 months