0 Replies Latest reply on Aug 1, 2002 12:11 PM by Steve Park

    HTTP 500 when getting an input stream from a URLConnection

    Steve Park Newbie

      My application consists of a swing applet connecting to a layer of servlets to pass serialized objects. On JBoss 2.4.x this worked fine. I'm currently migrating to JBoss 3.0.0 and now I'm getting a HTTP 500 error message in my browser's applet console. I have all my loggers set to Debug and no error messages are showing up anywhere in the server logs. I'm suspecting this is a configuration issue because I still get the HTTP 500 message even when I comment out all of the code in my service methods in the servlet.

      My web.xml file:

      <?xml version="1.0"?>

      <web-app>
      <context-param>
      <param-name>EDITPORTFOLIO_PATH</param-name>
      <param-value>/AccountManager/EditPortfolioInfoServ</param-value>
      </context-param>


      <servlet-name>EditPortfolioInfoServ</servlet-name>
      <servlet-class>Servlets.EditPortfolioInfoServ</servlet-class>
      <load-on-startup>5</load-on-startup>


      <servlet-mapping>
      <servlet-name>EditPortfolioInfoServ</servlet-name>
      <url-pattern>/EditPortfolioInfoServ/*</url-pattern>
      </servlet-mapping>

      <ejb-ref>
      <ejb-ref-name>StudentSession</ejb-ref-name>
      <ejb-ref-type>Session</ejb-ref-type>
      ejb.session.StudentSessionHome
      ejb.session.StudentSession
      <ejb-link>StudentSession</ejb-link>
      </ejb-ref>
      </web-app>

      My jboss-web.xml file:

      <?xml version="1.0"?>

      <jboss-web>
      <ejb-ref>
      <ejb-ref-name>StudentSession</ejb-ref-name>
      <jndi-name>StudentSession</jndi-name>
      </ejb-ref>
      </jboss-web>

      My servlet java file:

      public class EditPortfolioInfoServ extends HttpServlet {
      private StudentSession stdntSession;

      public void init(ServletConfig config) throws ServletException {
      super.init(config);
      try {
      StudentSessionHome stdntSessionHome = (StudentSessionHome)PortableRemoteObject.narrow(new InitialContext().lookup("StudentSession"), StudentSessionHome.class);
      stdntSession = stdntSessionHome.create();
      }
      catch(Exception e) {
      e.printStackTrace();
      }
      }

      public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
      try {
      ObjectOutputStream out = new ObjectOutputStream(new GZIPOutputStream(new BufferedOutputStream(res.getOutputStream())));
      Integer studentID = new Integer(req.getParameter("stdnt"));
      tFolioInfo tfiInfo = stdntSession.getInitValues(studentID);
      out.writeObject(tfiInfo);
      out.flush();
      out.close();
      }
      catch(Exception e) {
      e.printStackTrace();
      }
      }
      }

      Here's the applet client code that connects to the Servlet:

      tFolioInfo tfiInfo = null;
      try {
      URL url = new URL("https://" + Common.HTTP_HOST + "/" + Common.SERVROOT + "/EditPortfolioInfoServ?stdnt=" + studentID);
      URLConnection con = url.openConnection();
      con.setUseCaches(false);
      ObjectInputStream in = new ObjectInputStream(new GZIPInputStream(new BufferedInputStream(con.getInputStream())));
      tfiInfo = (tFolioInfo)in.readObject();
      in.close();
      }
      catch(Exception e) {
      e.printStackTrace();
      }

      If anyone sees anything wrong here, please let me know ASAP. I'm under a major deadline to get this out.