Http Status 500 Error In Tomcat Java.lang.nullpointerexception
1 to 7 of 7 Thread: HTTP Status 500 - java.lang.NullPointerException LinkBack LinkBack URL About LinkBacks Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 11-24-2010,02:34 PM #1 hari krishna Member Join Date Oct 2010 Posts 7 Rep Power 0 HTTP Status 500 - java.lang.NullPointerException Hello Everyone, I http://stackoverflow.com/questions/26623311/calling-servlet-from-tomcat-throws-http-status-500-java-lang-nullpointerexceptio have a Problem Here after I create User Registeration page using JAVA SERVLET on Eclipse (Tom CAT Server) I have a Problem When I Click on "REGISTER" button on the created page, displaying the error message -------------------------------------------------------------------------- HTTP Status 500 - -------------------------------------------------------------------------------- type Exception report message description The server encountered an http://www.java-forums.org/java-servlet/35214-http-status-500-java-lang-nullpointerexception.html internal error () that prevented it from fulfilling this request. exception java.lang.NullPointerException com.obr.books.servlets.RegisterServlet.doGet(Regis terServlet.java:42) com.obr.books.servlets.RegisterServlet.doPost(Regi sterServlet.java:50) javax.servlet.http.HttpServlet.service(HttpServlet .java:637) javax.servlet.http.HttpServlet.service(HttpServlet .java:717) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs. -------------------------------------------------------------------------------- Apache Tomcat/6.0.29 ANY HELP GREATLY APPRECIATED Reply With Quote 11-24-2010,02:48 PM #2 Tolls Moderator Join Date Apr 2009 Posts 12,947 Rep Power 22 So, what is this line? java.lang.NullPointerException com.obr.books.servlets.RegisterServlet.doGet(Regis terServlet.java:42) Because there's a null pointer exception there. Reply With Quote 11-25-2010,05:26 PM #3 hari krishna Member Join Date Oct 2010 Posts 7 Rep Power 0 HTTP Status 500 - java.lang.NullPointerException So This were the lines probably causing the problem ? public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("RegisterServlet ---->>>doGet()"); String type = request.getParameter("type"); System.out.println("Selected oprtation\t:" + type); if (type.equalsIgnoreCase(SAVE)) { doSave(request, response); } else { System.err.println("Invalid operation"); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
2 days a month entering data. I turned it into 2 minutes. Learn Docker Learn Docker. PRTG Powershell Interface https://community.spiceworks.com/topic/1415278-tomcat-http-status-500-java-lang-nullpointerexception-with-sql-jdbc-errors Creation of an Powershell interface for PRTG Network and System Monitoring tool TECHNOLOGY IN THIS DISCUSSION Microsoft Wind...Server 2008 R2 Microsoft SQL Server 2014 Sun Microsyste...me http://forums.pentaho.com/showthread.php?58388-HTTP-Status-500-java-lang-NullPointerException Environment Oracle Java Microsoft SQL ...rting Services Microsoft SQL Server 2012 Apache Softwar...he HTTP Server Apache Tomcat Join the Community! Creating your account http status only takes a few minutes. Join Now I have an NPE on a Windows 2008 R2 vm guest that seems to be rather annoying and preventing people from using the vm. What's odd is that this wasn't occurring before until I migrated it from Hyper-V to VMware vSphere. It's supposed to load a webapp called 'license' from an http status 500 MSSQL database called 'license' and apparently didn't function at first because Java was no longer present (had v1.6 and now v1.8). Nevertheless, I installed JRE 1.8.0.66 for use with Tomcat, set the environment variables in a command prompt and then manually started one of the many Apache versions on this host (I just took over this network). This seemed to resolve the issue for the staff and I never heard anything until after a maintenance window did a restart of the host and obviously I didn't make the environment variables persistent. Now I get an NPE when accessing the host locally, with the following (I can also provide the SQL logs too - which BTW are telling me that a login failed for user 'sa' when I can log in either in mixed or SQL mode with sa just fine. What do you guys suggest I try here? (NPE below and I did look at line 43 of the offending java file listed which just has 'ResultSet rs =null;' Thx, Brian
View Site Leaders Advanced Search Forum Pentaho Users BI Platform HTTP Status 500: java.lang.NullPointerException If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 3 of 3 Thread: HTTP Status 500: java.lang.NullPointerException Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 12-03-2007,06:46 AM #1 mrsaqib View Profile View Forum Posts Private Message Junior Member Join Date Nov 2007 Posts 25 HTTP Status 500: java.lang.NullPointerException hi there i am facing the following error and need a solution. i will be very thankful to u, following is error: After the pentaho,jboss starts, i login successfully but when i click on "Go->Solutions" from the upper navigation menu, i recieve the following error, the log og error is as follows, HTTP Status 500 - description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: java.lang.NullPointerException org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:535) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:429) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:264) org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107) org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72) org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274) .............. ............ root cause java.lang.NullPointerException org.pentaho.core.repository.SolutionRepositoryBase.getXSLName(SolutionRepositoryBase.java:418) org.pentaho.ui.component.NavigationComponent.getXmlContent(NavigationComponent.java:98) org.pentaho.ui.XmlComponent.getContent(XmlComponent.java:46) org.apache.jsp.jsp.Navigate_jsp._jspService(Navigate_jsp.java:144)