Servlet which extends HttpServlet

I had created a Servlet which extends HttpServlet. This Servlet I use as baseClass for all servlets in my project But JDeveloper 3.1 can debug only Servlets which are directly extended by HttpServlet. on every other extended Servlet the "Run/Debug"-Context menu didn't appear
does 3.1.1.2 fix this problem?

This is a bug in JDev 3.1.x. It is being fixed in JDeveloper 3.2
raghu

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Debugging extended HttpServlets

I had created a Servlet which extends HttpServlet. This Servlet I use as baseClass for all servlets in my project
But JDeveloper3.0 can debug only Servlets which are directly extended by HttpServlet. on every other extended Servlet the "Run/Debug"-Context menu didn't appear
please help

I am in a similar situation as the first poster. I downloaded JDeveloper 3.1 for exactly this reason. It does not work - the Run/Debug context menu does not appear on servlets which don't directly inherit from HttpServlet.

Errormessage using extending HttpServlet

I'm having a class that extends HttpServlet. When I'm making a RequestDispatcherobject I get the following errormessage:
java.lang.IllegalStateException: ServletConfig has not been initialized
at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:185)
public class RegUserController extends HttpServlet {
public void init( ServletConfig config )
throws ServletException {
// call superclass's init method for initialization
super.init( config );
Does anyone know what I'm doing wrong?

I'm making a RequestDispatcherobject in class
RegUserController. What do you write inside the init
method? Nothing more that you have.
Is your custom servlet registered in web.xml via <servlet>...</servlet> and <servlet-mapping>...</servlet-mapping> components?
Has your Servlet been generated, called, and initiated from within normal Servlet activity? Meaning, did you call
RegUserController controller = new RegUserController();
Or did you let the servlet container do all the instantiation for you and you just get to this point when a request is made to it?

How can I display the HTML page from servlet which is called by an applet

How can I display the HTML page from servlet which is called by an
applet using the doPost method. If I print the response i can able to see the html document. How I can display it in the browser.
I am calling my struts action class from the applet. I want to show the response in the same browser.
Code samples will be appreciated.

hi
I got one way for this .
call a javascript in showDocument() to submit the form

How to Create an XML document from XSQL servlet which follows a particular DTD struct

how to Create an XML document from XSQL servlet which follows a particular DTD structure.Could anyone send me a sample code for this.

You'll need to associate an XSLT transformation with your XSQL page that transforms the canonical result into your DTD-valid format.
For example, given an XSQL page like:
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="rss.xsl" ?>
<xsql:query max-rows="3" connection="demo" xmlns:xsql="urn:oracle-xsql">
select title,id,description,url,to_char(timestamp,'Mon DD') timestamp
from site_entry
order by id desc
</xsql:query>and an "rss.xsl" stylesheet that looks like this:
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="xml" indent="yes" doctype-system="rss-0.91.dtd"/>
<xsl:template match="/">
<xsl:for-each select="ROWSET/ROW">
<rss version="0.91">
<channel>
<title>Do You XML?</title>
<link>http://xml.us.oracle.com</link>
<description>Oracle XML Website Demo</description>
<language>en-us</language>
<xsl:for-each select="ITEM">
<item>
<title><xsl:value-of select="TITLE"/></title>
<link><xsl:value-of select="URL"/></link>
<description><xsl:value-of select="DESCRIPTION"/></description>
</item>
</xsl:for-each>
</channel>
</rss>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>You produce DTD-valid output against the rss-0.91.dtd DTD that looks like:
<?xml version = '1.0' encoding = 'UTF-8'?>
<!DOCTYPE rss SYSTEM "rss-0.91.dtd">
<rss version="0.91">
<channel>
<title>Do You XML?</title>
<link>http://xml.us.oracle.com</link>
<description>Oracle XML Website Demo</description>
<language>en-us</language>
</channel>
</rss>
<rss version="0.91">
<channel>
<title>Do You XML?</title>
<link>http://xml.us.oracle.com</link>
<description>Oracle XML Website Demo</description>
<language>en-us</language>
</channel>
</rss>
<rss version="0.91">
<channel>
<title>Do You XML?</title>
<link>http://xml.us.oracle.com</link>
<description>Oracle XML Website Demo</description>
<language>en-us</language>
</channel>
</rss>

Calling a bean in weblogic 4.5 from a servlet which is in Iplanet webserver4.1

while Calling a bean in weblogic 4.5 from a servlet which is in Iplanet webserver4.1 sometimes the servlet is not able to call the bean. There is no error logged in webserver. This is happening very rarely and when it happens I have to shut and restart IplanetWS.
Can anyone tell me some solution or reason
Regards
Nitin

We did receive a 4.5.1 / 5.1 interoperability patch - but it wasn't quite 'seamless'.
We never tried to use it.
SOAP? Isn't that around 50 times slower than RMI?
Mike
"Gary Mui" <[email protected]> wrote:
We ran into this issue last fall and got some feedback from weblogic
support. They originally said that it could be done (as well as different
versions talking to one another via JMS) but it turned out that they
were
incorrect and ended up saying that it is not possible. Before 6.0 went
GA,
BEA said that there would be a interoperability patch to do this, but
I've
never seen nor heard of anything regarding it. As a workaround, we
implemented 4.5.1 / 6.0 communication via SOAP.
Mike Reiche wrote in message <3b1bcaec$[email protected]>...
I have the same question - and more. Last year we were told that wecould
not use
RMI (and ejbs) between 4.5.1 and 5.1. Which seems kinda weird becauseI've
heard
of people using WL ejbs from Tomcat. This issue has caused us to avoidusing
WL ejbs in any future development which has any chance of ever beingused
by any
app server (WL included) that is not under the direct control of thedata
center.
I've been trying to convince the Architecture team here that we canuse WL
EJBs
and we can call them from other app servers - but can't seem to getany
supporting
statement from BEA (maybe I haven't tried hard enough).
Anyway, a response from BEA would be appreciated.
- Mike
"Madhu K" <[email protected]> wrote:
Is it possible to call a (stateless session) bean deployed in weblogic
6.0
from a bean in weblogic 5.1? I have two versions of weblogic running
on two
different hosts and I have to call a bean that is running in 6.0 from
5.1.
Are there any limitations?
Appreciate any feedback/suggestions.
Thanks,
Madhu

How to get response from a servlet which depends on cookies?

guys,
i have a servlet which behaves differently based on the presence of a cookie or not. If cookie A is present in the machine it shows the the home page and if not it shows the login page.
now i want to get the home page HTML content from a program without using the browser. i am aware this can be done by using java.net.URL but how do i simulate the cookie given that i know that's the cookie name and value it expects?
Unfortunately i cannot paste the servlet code as it is a servlet of a product and i don't have the source code for it.
Thanks
S

I believe you use URLConnection.setRequestProperty(), with the key being "Cookie".

Invoke a panel object in a class which extends JFrame

I have a class LoginUI which extends JFrame and another class NewUserUI which extends JPanel. The LoginUI contains a button which when clicked should display the NewUserUI panel in a separate window. How should I invoke the NewUserUI object in the LoginUI class?

One possibility would be the use of a JOptionPane containing the JPanel.
Cheers
DB

Mapping webapp URLs to a single servlet which forwards to JSP

I am using JSP for page presentation, but I want to have all requests
          intercepted by a servlet, which will perform various functions before
          forwarding to the requested JSP page. In general, I want the URL to
          reflect the target JSP page, to facilitate bookmarking. I'm using a
          web application to deploy the servlet+JSPs.
          Ideally, I wanted to have all request URLs look like a request for the
          JSP page without the .jsp extension (so
          http://hostname/webapp/here/there maps to /here/there.jsp within
          webapp). However, I can find no provision in web.xml for mapping all
          URLs without extensions to a specific servlet. I can use '/' to map
          all requests to the servlet, but then even image or HTML requests
          get intercepted (and trashed).
          On the other hand, if I map '*.jsp' to the servlet, then when I try to
          forward to the actual JSP page, the servlet gets invoked again
          recursively.
          I could create an arbitrary extension and map it to the servlet, and
          then have the servlet replace my custom extension with '.jsp' before
          forwarding, but this seems a bit funky.
          Has anyone come up with a better solution to this, within the context
          of a webapp? Seems like it should be a not-uncommon scenario.
          Thanks,
                              -- Peter


Yes, you can! It depends on how you access the servlet. If you access it via GET method you must add a request parameter to the url to distinguish from which jsp the request comes. If you use POST method (with form submission) put a hidden field in the form and with that field you can recognize from which jsp the request comes.
Message was edited by:
amittev

How to link between 2 servlets which are in 2 diferent servers

I tried to move between 2 servlets which are residing in 2 different servers using the response.Redirect("myurl") method but when i try to return from the second servlet it gave me an error saying the response has been committed. I also tried using the request.getRequestDispatcher("myurl") method but this method does not seem to work as the servlets are in different servers. Anyone who have encountered this problem before please help. Thanks

A RequestDispatcher only works within one JVM so cannot be used in your case. sendRedirect() causes the client to request the second servlet. To return to the first servlet, you need to sendRedirect() again. Basically, there is no link between the two servlets and you are communicating via the client (presumably a browser). You cannot pass session or servlet context attributes between the two servlets because they ruin in separate JVMs.
If you're already using sendRedirect() in boht places and the second servlet is giving an error, then there's a problem with that servlet. Perhaps you could post the code and the error.
If you want direct communication between the servlets, you need to custom build a link using HTTP, RMI or other protocols. There are many examples on this forum.

What is the program name which extend the partitions in BW 3.5 ?

Hi All..
What is the program name which extend/split the partitions in BW 3.5 ?
Thanks..
Saj

Hope It's not too late,
You might be talking about the program described in note "697275":
- SAP_EXTEND_PARTITIONING_INF for INFORMIX databases.
There's also a possibility described in note "895539":
- SAP_PART_EXTEND_ETABLE for ORACLE databases.
Good Luck!
Edited by: Martin St-Jean on Dec 3, 2009 5:07 PM
Edited by: Martin St-Jean on Dec 3, 2009 5:20 PM

Names of the programs which Extend Materials, Load Materials and Load maste

Hi ,
Could you please give the names of the programs which Extend Materials, Load Materials and Load master data settings for auto replenishment.
With regards,
Pritee.

HI,
As per your needs programs list as follows.
1) Material Extended T-codes(program) :
   a) LSMW - Legacy System Migration Workbench
   b) BDC    - Batch data communication
   c) MM17 - Mass Maintenance Materials and
   d) MM01 - Create Material also extended material one by one.
2) Load Materials
   a) LSMW - Legacy System Migration Workbench
   b) BDC    - Batch data communication
3) Load Material Master
    a) MM01 - Create Material.
Hope, it is useful for you.
Regards,
K.Rajendran

How to set the customised contentviewer which extends BasicContentViewerUI

Hi,
I have a MyContentViewerUI which extends BasicContentViewerUI here i am Overriding the method hyperlinkUpdate so that i can access mail and http urls.
I call MyContentViewerUI class in using
SwingHelpUtilities.setContentViewerUI("com.help.MyContentViewerUI"); nothing actually happens and i get the following exception
ContentViewerClass com.help.MyContentViewerUI doesn't exist.
am i missing out something . Please Help!
Thanks
Rani

Hi Dominik,
Thanks for your response! A few hours after posting, I managed to figure that out - although the rule seems to be a bit more complicated.
I found that if there is no need for a Hybrid (i.e., ID Host Adapters not used), then the ExtensionBundleID is the display name in Extension Manager. However, if a Hybrid is required because ID Host Adapters are used, then the Hybrid name becomes the extension name in Extension Builder.
Regards,
mlavie

Whats the role of mirror servlet in extending an ABCS?

Hi
I am trying to extend an ABCS service.
I went to ProcessSalesOrderSiebelReqABCSImplExtensionV2 partner link and wsdlRuntimeLocation property points to http://SOA_HOST:SOA_PORT/AIAComponents/ExtensionServiceLibrary/Siebel/ProcessSalesOrderSiebelReqABCSImplExtensionConcrete.wsdl.
When I checked this wsdl; its referring to <soap:address location="http://SOA_HOST:SOA_PORT/MirrorServlet/mirror" /> .
My doubts are:
1. What is the role of this MirrorServlet or its just a placeholder?
Lets say I have a bpel service that will provide me required data to enhance ABM/EBM. Now what steps I need to follow.
2. Do I need to change wsdlRuntimeLocation with actual service location? If yes then I need to change ProcessSalesOrderSiebelReqABCSImplExtensionAbstract too but this service contains all 4 possible operations to extend an ABCS. So for that I need to create a service which will contain all 4 operations and implement necessary logic. Is this the right approach?
Please suggest a standard approach to extend ABCS.
Thanks
Vibhor

First see this thread: ABCSExtension - Invoking custom Service
The MirrorServlet is used by Oracle QA as a stub extension service to allow testing of activating/deactivating the extension points in ABCS's. The servlet can of course be used by customers for the same purpose.
If you intend to activate and implement more than 1 of the extension operations for an ABCS, then yes you would need to implement each operation in a single service. You don't need to implement all 4 operations, only the one(s) you intend to activate and use at runtime.

LoadClass (error loading a class which extends other class at run-time)

Hey!
I'm using the Reflection API
I load a class called 'SubClass' which exists in a directory called 'subdir' at run-time from my program
CustomClassLoader loader = new CustomClassLoader();
Class classRef = loader.loadClass("SubClass");
class CustomClassLoader extends ClassLoader. I have defined 'findClass(String className)' method in CustomClassLoader.
This is what 'findClass(String className)' returns:
defineClass (className,byteArray,0,byteArray.length);
'byteArray' is of type byte[] and has the contents of subdir/SubClass.
the problem:
The program runs fine if SubClass does not extend any class.
If however, SubClass extends another class, the program throws a NoClassDefFoundError. How is it conceptually different?
Help appreciated in Advance..
Thanks!

Because i'm a newbie to the Reflection thing, i'm notI don't see reflection anywhere. All I see is class loading.
sure what role does the superclass play when i'm
trying to load the derived class and how to get away
with the errorWell... hint: all the superclass's stuff is not copied into the subclass.
I am quite sure it fails to load the superclass because of classpath issues.

Servlet which extends HttpServlet

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