I know it is a silly question But unable to get HelloWorldServlet to work!

Question

          Hello Everybody,
          I've downloaded the weblogic server today and thought of testing it with HelloWorld servlet. I made directory structure and copied under mydomain/applications/
          So finally my directory structure is mydomain/applications/myWebAPP/WEB-INF/classes/examples/servlets/HelloWorldServlet.class.
          Just onle one Hello World servlet and web.xml file which has the following entries.
          <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
          <web-app>
          <display-name>Reliable Web Application</display-name>
          <servlet>
          <servlet-name>HelloWorldServlet</servlet-name>
          <servlet-class>examples.servlets.HelloWorldServlet</servlet- class>
          </servlet>
          <servlet-mapping>
          <servlet-name>HelloWorldServlet</servlet-name>
          <url-pattern>/HelloWorldServlet/*</url-pattern>
          </servlet-mapping>
          <mime-mapping>
          <extension>html</extension>
          <mime-type>text/html</mime-type>
          </mime-mapping>
          <mime-mapping>
          <extension>htm</extension>
          <mime-type>text/html</mime-type>
          </mime-mapping>
          </web-app>
          I have coded that HelloWorldServlet in my Jbuilder and copied it to that location. Then I started my default admin server, console, and opened a webpage and gave URL like this.....
          http://abcom1:7001/Reliable/HelloWorldServlet.
          Then it I saw the following errors on my default admin server window.
          <Nov 28, 2000 5:48:55 PM CST> <Error> <HTTP> <[WebAppServletContext(3232789,Reli
          able)] Error loading servlet: 'HelloWorldServlet'
          java.lang.NoClassDefFoundError: examples/servlets/HelloWorldServlet (wrong name:
          HelloWorldServlet)
          at java.lang.ClassLoader.defineClass0(Native Method)
          at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
          at java.lang.ClassLoader.defineClass(ClassLoader.java:426)
          at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Generic
          ClassLoader.java:278)
          at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClass
          Loader.java:146)
          at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAw
          areClassLoader.java:41)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
          at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubI
          mpl.java:530)
          at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.
          java:293)
          at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
          pl.java:200)
          at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
          rvletContext.java:1107)
          at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
          pl.java:1482)
          at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          >
          <Nov 28, 2000 5:48:55 PM CST> <Error> <HTTP> <[WebAppServletContext(3232789,Reli
          able)] Servlet failed with ServletException
          javax.servlet.ServletException: Servlet class: 'examples.servlets.HelloWorldServ
          let' could not be resolved - a class upon which this class depends wasn't found
          at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubI
          mpl.java:544)
          at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.
          java:293)
          at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
          pl.java:200)
          at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
          rvletContext.java:1107)
          at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
          pl.java:1482)
          at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          >
          I don't why why it is unable to find my servlet. Any help in resolving this error is highly appreciated.
          Also if want to put package structure in place like myWebApp/WEB-INF/classes/com/company/servlets/*.class
          what changes I need to do for my web.xml file.
          Thanks so much,
          Sri.
          

Answer 1

          Thanks for helping me out Gary. It worked.
          Sri.
          Gary Keim <[email protected]> wrote:
          >
          >
          >When you coded it up in JBuilder, did you declare it to be in package
          >examples.servlets? The exception is indicating that the actual full
          >package name of your servlet is simply "HelloWorldServlet.class" as
          >opposed to the expected "examples.servlets.HelloWorldServlet.class."
          >
          >You should have the following line at the very top of
          >HelloWorldServlet.java:
          >
          >package examples.servlets;
          >
          >You can leave it in the "default package" but then you'll need to change
          >your directory structure and servlet declaration.
          >
          >-Gary
          >
          >sri wrote:
          >
          >> Hello Everybody,
          >> I've downloaded the weblogic server today and thought of testing it with HelloWorld servlet. I made directory structure and copied under mydomain/applications/
          >> So finally my directory structure is mydomain/applications/myWebAPP/WEB-INF/classes/examples/servlets/HelloWorldServlet.class.
          >> Just onle one Hello World servlet and web.xml file which has the following entries.
          >>
          >> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
          >> <web-app>
          >> <display-name>Reliable Web Application</display-name>
          >> <servlet>
          >> <servlet-name>HelloWorldServlet</servlet-name>
          >> <servlet-class>examples.servlets.HelloWorldServlet</servlet- class>
          >> </servlet>
          >> <servlet-mapping>
          >> <servlet-name>HelloWorldServlet</servlet-name>
          >> <url-pattern>/HelloWorldServlet/*</url-pattern>
          >> </servlet-mapping>
          >> <mime-mapping>
          >> <extension>html</extension>
          >> <mime-type>text/html</mime-type>
          >> </mime-mapping>
          >> <mime-mapping>
          >> <extension>htm</extension>
          >> <mime-type>text/html</mime-type>
          >> </mime-mapping>
          >> </web-app>
          >>
          >> I have coded that HelloWorldServlet in my Jbuilder and copied it to that location. Then I started my default admin server, console, and opened a webpage and gave URL like this.....
          >> http://abcom1:7001/Reliable/HelloWorldServlet.
          >> Then it I saw the following errors on my default admin server window.
          >>
          >> <Nov 28, 2000 5:48:55 PM CST> <Error> <HTTP> <[WebAppServletContext(3232789,Reli
          >> able)] Error loading servlet: 'HelloWorldServlet'
          >> java.lang.NoClassDefFoundError: examples/servlets/HelloWorldServlet (wrong name:
          >> HelloWorldServlet)
          >> at java.lang.ClassLoader.defineClass0(Native Method)
          >> at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
          >> at java.lang.ClassLoader.defineClass(ClassLoader.java:426)
          >> at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Generic
          >> ClassLoader.java:278)
          >> at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClass
          >> Loader.java:146)
          >> at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAw
          >> areClassLoader.java:41)
          >> at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
          >> at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
          >> at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubI
          >> mpl.java:530)
          >> at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.
          >> java:293)
          >> at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
          >> pl.java:200)
          >> at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
          >> rvletContext.java:1107)
          >> at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
          >> pl.java:1482)
          >> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          >> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          >>
          >> <Nov 28, 2000 5:48:55 PM CST> <Error> <HTTP> <[WebAppServletContext(3232789,Reli
          >> able)] Servlet failed with ServletException
          >> javax.servlet.ServletException: Servlet class: 'examples.servlets.HelloWorldServ
          >> let' could not be resolved - a class upon which this class depends wasn't found
          >> at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubI
          >> mpl.java:544)
          >> at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.
          >> java:293)
          >> at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
          >> pl.java:200)
          >> at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
          >> rvletContext.java:1107)
          >> at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
          >> pl.java:1482)
          >> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          >> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          >>
          >>
          >> I don't why why it is unable to find my servlet. Any help in resolving this error is highly appreciated.
          >> Also if want to put package structure in place like myWebApp/WEB-INF/classes/com/company/servlets/*.class
          >> what changes I need to do for my web.xml file.
          >>
          >> Thanks so much,
          >> Sri.
          >>
          >>
          >>
          >>
          >>
          >>
          >>
          >
          >
          >
          ><html><head></head><body>When you coded it up in JBuilder, did you declare
          >it to be in package examples.servlets?  The exception is indicating that
          >the actual full package name of your servlet is simply "HelloWorldServlet.class"
          >as opposed to the expected "examples.servlets.HelloWorldServlet.class."<br>
          ><br>
          >You should have the following line at the very top of HelloWorldServlet.java:<br>
          ><br>
          >package examples.servlets;<br>
          ><br>
          >You can leave it in the "default package" but then you'll need to change your directory structure and servlet declaration.<br>
          ><br>
          >-Gary<br>
          ><br>
          >sri wrote:<br>
          ><blockquote type="cite" cite="mid:[email protected]"><pre wrap="">Hello Everybody,<br>I've downloaded the weblogic server today and thought of testing it with HelloWorld servlet. I made directory structure and copied under mydomain/applications/<br>So finally my directory structure is mydomain/applications/myWebAPP/WEB-INF/classes/examples/servlets/HelloWorldServlet.class. <br>Just onle one Hello World servlet and web.xml file which has the following entries.<br><br><!DOCTYPE web-app
          >PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" <a class="moz-txt-link-rfc2396E" href="http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"</a>><br><web-app><br> <display-name>Reliable Web Application</display-name><br> <servlet><br> <servlet-name>HelloWorldServlet</servlet-name><br> <servlet-class>examples.servlets.HelloWorldServlet</servlet- class><br> </servlet><br> <servlet-mapping><br>
          > <servlet-name>HelloWorldServlet</servlet-name><br> <url-pattern>/HelloWorldServlet/*</url-pattern><br> </servlet-mapping><br> <mime-mapping><br> <extension>html</extension><br> <mime-type>text/html</mime-type><br> </mime-mapping><br> <mime-mapping><br> <extension>htm</extension><br> <mime-type>text/html</mime-type><br> </mime-mapping><br></web-app><br><br>I have coded
          >that HelloWorldServlet in my Jbuilder and copied it to that location. Then I started my default admin server, console, and opened a webpage and gave URL like this.....<br><a class="moz-txt-link-freetext" href="http://abcom1:7001/Reliable/HelloWorldServlet">http://abcom1:7001/Reliable/HelloWorldServlet</a>.<br>Then it I saw the following errors on my default admin server window.<br><br><Nov 28, 2000 5:48:55 PM CST> <Error> <HTTP> <[WebAppServletContext(3232789,Reli<br>able)]
          >Error loading servlet: 'HelloWorldServlet'<br>java.lang.NoClassDefFoundError: examples/servlets/HelloWorldServlet (wrong name:<br> HelloWorldServlet)<br> at java.lang.ClassLoader.defineClass0(Native Method)<br> at java.lang.ClassLoader.defineClass(ClassLoader.java:486)<br> at java.lang.ClassLoader.defineClass(ClassLoader.java:426)<br> at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Generic<br>ClassLoader.java:278)<br> at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClass<br>Loader.java:146)<br>
          > at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAw<br>areClassLoader.java:41)<br> at java.lang.ClassLoader.loadClass(ClassLoader.java:297)<br> at java.lang.ClassLoader.loadClass(ClassLoader.java:253)<br> at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubI<br>mpl.java:530)<br> at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.<br>java:293)<br> at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm<br>pl.java:200)<br>
          > at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe<br>rvletContext.java:1107)<br> at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm<br>pl.java:1482)<br> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)<br> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)<br></pre>
          > <pre wrap=""><!----><Nov 28, 2000 5:48:55 PM CST> <Error> <HTTP> <[WebAppServletContext(3232789,Reli<br>able)] Servlet failed with ServletException<br>javax.servlet.ServletException: Servlet class: 'examples.servlets.HelloWorldServ<br>let' could not be resolved - a class upon which this class depends wasn't found<br> at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubI<br>mpl.java:544)<br> at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.<br>java:293)<br>
          > at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm<br>pl.java:200)<br> at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe<br>rvletContext.java:1107)<br> at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm<br>pl.java:1482)<br> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)<br> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)<br></pre>
          > <pre wrap=""><!----><br>I don't why why it is unable to find my servlet. Any help in resolving this error is highly appreciated. <br>Also if want to put package structure in place like myWebApp/WEB-INF/classes/com/company/servlets/*.class<br>what changes I need to do for my web.xml file. <br><br>Thanks so much,<br>Sri.<br><br><br><br><br><br><br><br></pre>
          > </blockquote>
          > <br>
          ></body></html>
          >