Problem invoking servlet

Question

          Hello.
          I'm trying to invoke a servlet. I get the following error:
          javax.servlet.ServletException: [HTTP:101250][ServletContext(id=371807,name=BibleApp,context-path=/BibleApp)]:
          Servlet class /com/brainysoftware/burnaby/ControllerServlet for servlet ControllerServlet
          could not be loaded because a class on which it depends was not found in the classpath
          C:\bea\user_projects\infologic1\applications\BibleApp;C:\bea\user_projects\infologic1\applications\BibleApp\WEB-INF\classes.
          java.lang.NoClassDefFoundError: /com/brainysoftware/burnaby/ControllerServlet
          (wrong name: ControllerServlet).
          at weblogic.servlet.internal.ServletStubImpl.prepareServlet
          web.xml
          <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
          "http://java.sun.com/dtd/web-app_2_3.dtd">
          <web-app>
          <servlet>
          <servlet-name>simple</servlet-name>
          <jsp-file>simplePage.jsp</jsp-file>
          </servlet>
          <servlet>
          <servlet-name>ControllerServlet</servlet-name>
          <servlet-class>com.brainysoftware.burnaby.ControllerServlet</servlet-class>
          <!-- Define initial parameters that will be loaded into
          the ServletContext object in the controller servlet -->
          <init-param>
          <param-name>base</param-name>
          <param-value>http://localhost:7001/BibleApp/ControllerServlet</param-value>
          </init-param>
          <init-param>
          <param-name>jdbcDriver</param-name>
          <param-value>weblogic.jdbc.mssqlserver4.Driver</param-value>
          </init-param>
          <init-param>
          <param-name>imageUrl</param-name>
          <param-value>http://localhost:7001/BibleApp/images/</param-value>
          </init-param>
          <init-param>
          <param-name>dbUrl</param-name>
          <param-value>jdbc:weblogic:mssqlserver4:users@COMPAQSERVER</param-value>
          </init-param>
          <init-param>
          <param-name>dbUserName</param-name>
          <param-value>dinesh</param-value>
          </init-param>
          <init-param>
          <param-name>dbPassword</param-name>
          <param-value>werty69</param-value>
          </init-param>
          </servlet>
          <servlet>
          <servlet-name>test</servlet-name>
          <jsp-file>menu_1.jsp</jsp-file>
          </servlet>
          <servlet>
          <servlet-name>HelloServlet</servlet-name>
          <servlet-class>HelloServlet</servlet-class>
          </servlet>
          <servlet>
          <servlet-name>ShowEmployees</servlet-name>
          <servlet-class>ShowEmployees</servlet-class>
          </servlet>
          <servlet-mapping>
          <servlet-name>HelloServlet</servlet-name>
          <url-pattern>/helloservlet</url-pattern>
          </servlet-mapping>
          <servlet-mapping>
          <servlet-name>test</servlet-name>
          <url-pattern>/test</url-pattern>
          </servlet-mapping>
          <servlet-mapping>
          <servlet-name>simple</servlet-name>
          <url-pattern>/simple</url-pattern>
          </servlet-mapping>
          <servlet-mapping>
          <servlet-name>ShowEmployees</servlet-name>
          <url-pattern>/ShowEmployees</url-pattern>
          </servlet-mapping>
          <servlet-mapping>
          <servlet-name>ControllerServlet</servlet-name>
          <url-pattern>/controlIt</url-pattern>
          </servlet-mapping>
          </web-app>
          ControllerServlet.class
          import java.sql.*;
          import javax.servlet.*;
          import javax.servlet.http.*;
          import java.io.*;
          import java.util.*;
          import com.brainysoftware.burnaby.DbBean;
          public class ControllerServlet extends HttpServlet {
          /**Initialize global variables*/
          public void init(ServletConfig config) throws ServletException {
          System.out.println("initializing controller servlet.");
          ServletContext context = config.getServletContext();
          context.setAttribute("base", config.getInitParameter("base"));
          context.setAttribute("imageUrl", config.getInitParameter("imageUrl"));
          // instantiating the DbBean
          DbBean dbBean = new DbBean();
          // initialize the DbBean's fields
          dbBean.setDbUrl(config.getInitParameter("dbUrl"));
          dbBean.setDbUserName(config.getInitParameter("dbUserName"));
          dbBean.setDbPassword(config.getInitParameter("dbPassword"));
          // put the bean in the servlet context
          // the bean will be accessed from JSP pages
          context.setAttribute("dbBean", dbBean);
          try {
          // loading the database JDBC driver
          Class.forName(config.getInitParameter("jdbcDriver"));
          catch (ClassNotFoundException e) {
          System.out.println(e.toString());
          super.init(config);
          /**Process the HTTP Get request*/
          public void doGet(HttpServletRequest request, HttpServletResponse response) throws
          ServletException, IOException {
          doPost(request, response);
          /**Process the HTTP Post request*/
          public void doPost(HttpServletRequest request, HttpServletResponse response) throws
          ServletException, IOException {
          String base = "/jsp/";
          String url = base + "Default.jsp";
          String action = request.getParameter("action");
          if (action!=null) {
          if (action.equals("search"))
          url = base + "SearchResults.jsp";
          else if (action.equals("browseCatalog"))
          url = base + "BrowseCatalog.jsp";
          else if (action.equals("productDetails"))
          url = base + "ProductDetails.jsp";
          else if (action.equals("productDetails"))
          url = base + "ProductDetails.jsp";
          else if (action.equals("addShoppingItem") ||
          action.equals("updateShoppingItem") ||
          action.equals("deleteShoppingItem") ||
          action.equals("displayShoppingCart"))
          url = base + "ShoppingCart.jsp";
          else if (action.equals("checkOut"))
          url = base + "CheckOut.jsp";
          else if (action.equals("order"))
          url = base + "Order.jsp";
          RequestDispatcher requestDispatcher = getServletContext().getRequestDispatcher(url);
          requestDispatcher.forward(request, response);
          

Answer 1

          WEB-INF/classes dir & WEB-INF/lib dir are in the server classpath.
          "dinesh" <[email protected]> wrote:
          >
          >Ok, I tried that and it's giving the same error. Do I need to define
          >the JAR file
          >in the web.xml?
          >Thanks.
          >
          >"Deepak Vohra" <[email protected]> wrote:
          >>
          >>
          >>Create a jar file from the classes referred by the servlet class & copy
          >>the jar
          >>file to the WEB-INF/lib directory.
          >>
          >>
          >>"dinesh" <[email protected]> wrote:
          >>>
          >>>I tried to add the servlet to the classpath with the following command:
          >>>
          >>>
          >>>software\burnaby>java -cp -classpath c:\bea\user_projects\infologic1\application
          >>>s\BibleApp\WEB-INF\classes\com\brainysoftware\burnaby\ControllerServlet.class
          >>>
          >>>
          >>>Exception in thread "main" java.lang.NoClassDefFoundError: c:\bea\user_projects\
          >>>infologic1\applications\BibleApp\WEB-INF\classes\com\brainysoftware\burnaby\Cont
          >>>rollerServlet/class;
          >>>
          >>>Is there another way to do this?
          >>>
          >>>
          >>>"Deepak Vohra" <[email protected]> wrote:
          >>>>
          >>>>Is the servlet class com/brainysoftware/burnaby/ControllerServlet
          >in
          >>>>the WEB-INF\classes
          >>>>directory?
          >>>>
          >>>>
          >>>>
          >>>>
          >>>>"dinesh" <[email protected]> wrote:
          >>>>>
          >>>>>Hello.
          >>>>>I'm trying to invoke a servlet. I get the following error:
          >>>>>javax.servlet.ServletException: [HTTP:101250][ServletContext(id=371807,name=BibleApp,context-path=/BibleApp)]:
          >>>>>Servlet class /com/brainysoftware/burnaby/ControllerServlet for servlet
          >>>>>ControllerServlet
          >>>>>could not be loaded because a class on which it depends was not found
          >>>>>in the classpath
          >>>>>C:\bea\user_projects\infologic1\applications\BibleApp;C:\bea\user_projects\infologic1\applications\BibleApp\WEB-INF\classes.
          >>>>>java.lang.NoClassDefFoundError: /com/brainysoftware/burnaby/ControllerServlet
          >>>>>(wrong name: ControllerServlet).
          >>>>>at weblogic.servlet.internal.ServletStubImpl.prepareServlet
          >>>>>----------
          >>>>>web.xml
          >>>>><!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
          >>>>>2.3//EN"
          >>>>>"http://java.sun.com/dtd/web-app_2_3.dtd">
          >>>>><web-app>
          >>>>><servlet>
          >>>>>
          >>>>><servlet-name>simple</servlet-name>
          >>>>><jsp-file>simplePage.jsp</jsp-file>
          >>>>>
          >>>>></servlet>
          >>>>>
          >>>>><servlet>
          >>>>><servlet-name>ControllerServlet</servlet-name>
          >>>>><servlet-class>com.brainysoftware.burnaby.ControllerServlet</servlet-class>
          >>>>>
          >>>>><!-- Define initial parameters that will be loaded into
          >>>>>the ServletContext object in the controller servlet -->
          >>>>><init-param>
          >>>>><param-name>base</param-name>
          >>>>><param-value>http://localhost:7001/BibleApp/ControllerServlet</param-value>
          >>>>></init-param>
          >>>>><init-param>
          >>>>><param-name>jdbcDriver</param-name>
          >>>>><param-value>weblogic.jdbc.mssqlserver4.Driver</param-value>
          >>>>></init-param>
          >>>>><init-param>
          >>>>><param-name>imageUrl</param-name>
          >>>>><param-value>http://localhost:7001/BibleApp/images/</param-value>
          >>>>></init-param>
          >>>>><init-param>
          >>>>><param-name>dbUrl</param-name>
          >>>>><param-value>jdbc:weblogic:mssqlserver4:users@COMPAQSERVER</param-value>
          >>>>></init-param>
          >>>>><init-param>
          >>>>><param-name>dbUserName</param-name>
          >>>>><param-value>dinesh</param-value>
          >>>>></init-param>
          >>>>><init-param>
          >>>>><param-name>dbPassword</param-name>
          >>>>><param-value>werty69</param-value>
          >>>>></init-param>
          >>>>></servlet>
          >>>>><servlet>
          >>>>><servlet-name>test</servlet-name>
          >>>>><jsp-file>menu_1.jsp</jsp-file>
          >>>>></servlet>
          >>>>>
          >>>>><servlet>
          >>>>><servlet-name>HelloServlet</servlet-name>
          >>>>><servlet-class>HelloServlet</servlet-class>
          >>>>></servlet>
          >>>>>
          >>>>><servlet>
          >>>>><servlet-name>ShowEmployees</servlet-name>
          >>>>><servlet-class>ShowEmployees</servlet-class>
          >>>>></servlet>
          >>>>>
          >>>>><servlet-mapping>
          >>>>><servlet-name>HelloServlet</servlet-name>
          >>>>><url-pattern>/helloservlet</url-pattern>
          >>>>></servlet-mapping>
          >>>>>
          >>>>><servlet-mapping>
          >>>>><servlet-name>test</servlet-name>
          >>>>><url-pattern>/test</url-pattern>
          >>>>></servlet-mapping>
          >>>>>
          >>>>><servlet-mapping>
          >>>>><servlet-name>simple</servlet-name>
          >>>>><url-pattern>/simple</url-pattern>
          >>>>></servlet-mapping>
          >>>>><servlet-mapping>
          >>>>><servlet-name>ShowEmployees</servlet-name>
          >>>>><url-pattern>/ShowEmployees</url-pattern>
          >>>>></servlet-mapping>
          >>>>>
          >>>>><servlet-mapping>
          >>>>><servlet-name>ControllerServlet</servlet-name>
          >>>>><url-pattern>/controlIt</url-pattern>
          >>>>></servlet-mapping>
          >>>>>
          >>>>></web-app>
          >>>>>--------------
          >>>>>ControllerServlet.class
          >>>>>
          >>>>>import java.sql.*;
          >>>>>import javax.servlet.*;
          >>>>>import javax.servlet.http.*;
          >>>>>import java.io.*;
          >>>>>import java.util.*;
          >>>>>import com.brainysoftware.burnaby.DbBean;
          >>>>>
          >>>>>public class ControllerServlet extends HttpServlet {
          >>>>>
          >>>>>/**Initialize global variables*/
          >>>>>public void init(ServletConfig config) throws ServletException {
          >>>>>
          >>>>>System.out.println("initializing controller servlet.");
          >>>>>
          >>>>>ServletContext context = config.getServletContext();
          >>>>>context.setAttribute("base", config.getInitParameter("base"));
          >>>>>context.setAttribute("imageUrl", config.getInitParameter("imageUrl"));
          >>>>>
          >>>>>// instantiating the DbBean
          >>>>>DbBean dbBean = new DbBean();
          >>>>>// initialize the DbBean's fields
          >>>>>dbBean.setDbUrl(config.getInitParameter("dbUrl"));
          >>>>>dbBean.setDbUserName(config.getInitParameter("dbUserName"));
          >>>>>dbBean.setDbPassword(config.getInitParameter("dbPassword"));
          >>>>>
          >>>>>// put the bean in the servlet context
          >>>>>// the bean will be accessed from JSP pages
          >>>>>context.setAttribute("dbBean", dbBean);
          >>>>>
          >>>>>try {
          >>>>>// loading the database JDBC driver
          >>>>>Class.forName(config.getInitParameter("jdbcDriver"));
          >>>>>}
          >>>>>catch (ClassNotFoundException e) {
          >>>>>System.out.println(e.toString());
          >>>>>}
          >>>>>super.init(config);
          >>>>>}
          >>>>>
          >>>>>
          >>>>>/**Process the HTTP Get request*/
          >>>>>public void doGet(HttpServletRequest request, HttpServletResponse
          >>response)
          >>>>>throws
          >>>>>ServletException, IOException {
          >>>>>doPost(request, response);
          >>>>>}
          >>>>>
          >>>>>/**Process the HTTP Post request*/
          >>>>>public void doPost(HttpServletRequest request, HttpServletResponse
          >>>response)
          >>>>>throws
          >>>>>ServletException, IOException {
          >>>>>
          >>>>>String base = "/jsp/";
          >>>>>String url = base + "Default.jsp";
          >>>>>String action = request.getParameter("action");
          >>>>>
          >>>>>if (action!=null) {
          >>>>>if (action.equals("search"))
          >>>>>url = base + "SearchResults.jsp";
          >>>>>else if (action.equals("browseCatalog"))
          >>>>>url = base + "BrowseCatalog.jsp";
          >>>>>else if (action.equals("productDetails"))
          >>>>>url = base + "ProductDetails.jsp";
          >>>>>else if (action.equals("productDetails"))
          >>>>>url = base + "ProductDetails.jsp";
          >>>>>else if (action.equals("addShoppingItem") ||
          >>>>>action.equals("updateShoppingItem") ||
          >>>>>action.equals("deleteShoppingItem") ||
          >>>>>action.equals("displayShoppingCart"))
          >>>>>url = base + "ShoppingCart.jsp";
          >>>>>else if (action.equals("checkOut"))
          >>>>>url = base + "CheckOut.jsp";
          >>>>>else if (action.equals("order"))
          >>>>>url = base + "Order.jsp";
          >>>>>}
          >>>>>RequestDispatcher requestDispatcher = getServletContext().getRequestDispatcher(url);
          >>>>>requestDispatcher.forward(request, response);
          >>>>>
          >>>>>}
          >>>>>}
          >>>>>
          >>>>>
          >>>>
          >>>
          >>
          >