The walkthrough of building DB servlet doesn't work for me?

I download JDeveloper2.0 a few days ago and tried to build
servlet following the instruction from this web site. But the
sun web server complaint not being able to find the file I
specified. It seems the servlet's .class file need to be copied
to the c:JavaWebServer1.1.3/servlet directory. But even after I
did that nothing improves. Can anyone help?
by the way, I tried the building DB applet by using
JDeveloper1.1. The example i used is on Oracle Press's
JDeveloper book(pg384). After I deploy it on the web using
OAS4.0, if I call it using Netscape, it says query failed. If I
call it using IE, sometimes it works fine, and other times not
(applet doesn't show up). I am a bit of disappointed about the
product,since I was thinking about using it to develope our
database's web interface.
Steve
null

Steve,
I would recommend using the instructions in the online help for
deploying the servlet. The online demos are not really intended
to be step by step tutorials, and are also not as up to date as
the online docs, which are much more detailed.
In the online help system, expand the Developing Web Applications
node, then Deploying Java Servlets, then Deploying a Database
Servlet.
L
Steve Chen (guest) wrote:
: I download JDeveloper2.0 a few days ago and tried to build
: servlet following the instruction from this web site. But the
: sun web server complaint not being able to find the file I
: specified. It seems the servlet's .class file need to be copied
: to the c:JavaWebServer1.1.3/servlet directory. But even after I
: did that nothing improves. Can anyone help?
: by the way, I tried the building DB applet by using
: JDeveloper1.1. The example i used is on Oracle Press's
: JDeveloper book(pg384). After I deploy it on the web using
: OAS4.0, if I call it using Netscape, it says query failed. If I
: call it using IE, sometimes it works fine, and other times not
: (applet doesn't show up). I am a bit of disappointed about the
: product,since I was thinking about using it to develope our
: database's web interface.
: Steve
null

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Hello,
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          Olaf Klischat | TU Berlin computer science
          Oberfeldstrasse 132 |
          12683 Berlin, Germany |
          phone: +49 30 54986231 | eMail: [email protected]


Hi,
          we jared our servlets up and placed them in /WEB-INF/lib/....jar. The
          mapping is working without any problems.
          Daniel Hoppe
          -----Original Message-----
          From: Kumar Allamraju [mailto:[email protected]]
          Posted At: Saturday, August 26, 2000 7:57 PM
          Posted To: servlet
          Conversation: mapping paths to servlets doesn't work anymore in SP5 ??
          Subject: Re: mapping paths to servlets doesn't work anymore in SP5 ??
          Yes, this is already a known problem in SP5.
          Fix will be available in the upcoming service packs.
          I guess the workaround is to put servlet classes in servlet classpath.
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          Olaf Klischat wrote:
          > Hello,
          >
          > see subject.
          >
          > I have a small web application which is contained in a WAR-file named
          > "httpdump.war". Its deployment descriptor (web.xml) maps the servlet
          > httpdump.HttpDumpServlet to the path /servletpath/* with the following
          > XML statements:
          >
          > <servlet>
          > <servlet-name>HttpDumpServlet</servlet-name>
          > <display-name>The HTTP Dump Servlet</display-name>
          > <servlet-class>httpdump.HttpDumpServlet</servlet-class>
          > </servlet>
          >
          > <servlet-mapping>
          > <servlet-name>HttpDumpServlet</servlet-name>
          > <url-pattern>/servletpath/*</url-pattern>
          > </servlet-mapping>
          >
          > In weblogic.properties, I have:
          >
          > weblogic.httpd.webApp.httpdump=httpdump.war
          >
          > The WAR-file is structured as follows:
          >
          > $ jar tf httpdump.war
          > META-INF/
          > META-INF/MANIFEST.MF
          > WEB-INF/classes/httpdump/HttpDumpServlet.class
          > WEB-INF/web.xml
          > dummy.jsp
          > $
          >
          > Now a request like http://host:port/httpdump/servletpath/xyz should be
          > directed to my servlet, right?
          >
          > This works flawlessly in WLS 5.1 SP 3. With SP 5, I get the following:
          >
          > Sat Aug 26 15:58:54 CEST 2000:<E> <WebAppServletContext-httpdump>
          Error loading servlet: httpdump.HttpDumpServlet
          > java.lang.ClassNotFoundException: httpdump.HttpDumpServlet
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          5)
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          > at
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          weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoa
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          weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoa
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          weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl
          .java:371)
          > at
          weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.jav
          a:187)
          > at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.
          java:118)
          > at
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContex
          tImpl.java:760)
          > at
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContex
          tImpl.java:707)
          > at
          weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletCon
          textManager.java:251)
          > at
          weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:3
          69)
          > at
          weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:269)
          > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:135)
          >
          > Sat Aug 26 15:58:54 CEST 2000:<E> <WebAppServletContext-httpdump>
          Servlet failed with ServletException
          > javax.servlet.ServletException: Servlet class:
          httpdump.HttpDumpServlet could not be loaded - the requested class
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          >
          > at
          weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl
          .java:379)
          > at
          weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.jav
          a:187)
          > at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.
          java:118)
          > at
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContex
          tImpl.java:760)
          > at
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContex
          tImpl.java:707)
          > at
          weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletCon
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          > at
          weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:3
          69)
          > at
          weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:269)
          > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:135)
          >
          > So, it seems the WLS has interpreted the <servlet-mapping> tag in the
          > DD correctly, but is then looking for the servlet class in the wrong
          > places..?
          >
          > My system configuration:
          >
          > $ java weblogic.Admin t3://localhost:7001 VERSION
          > WebLogic Build: 5.1.0 Service Pack 5 08/17/2000 07:21:55 #79895
          >
          > $ uname -a
          > Linux localhost.localdomain 2.2.14 #1 Wed Aug 16 01:57:42 CEST 2000
          i686 unknown
          >
          > $ java -version
          > java version "1.2.2"
          > Classic VM (build 1.2.2-L, green threads, nojit)
          > $
          >
          > Any hints?
          >
          > Thanks,
          > Olaf
          > --
          > Olaf Klischat | TU Berlin computer science
          > Oberfeldstrasse 132 |
          > 12683 Berlin, Germany |
          > phone: +49 30 54986231 | eMail: [email protected]

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