Can I expose existing java applications as webservices

I have some java based applications doing functions such as datamining, visualization ... Can I expose these as webservices? How to do that? Can I directly expose it as webservices? What tools should I use? Please explain.
Thanks

basically, if you have a java application doing stuff, you can create a webservice by writing JSP pages and beans and/or servlets. very simple example:
- write a jsp page for data input that access your bean
- write a bean that routes the request/response to/from your application classes
all you need for doing this is a webserver and a servlet container (e.g. tomcat).
however, if youre application is doing some graphical output, you could split your application in two: a client application for the visualization, which is communication with a servlet or a full blown J2EE server (http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/WCC.html).

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Use Sun Java Studio 2 with Existing Java Application

I have started using Sun Java Studio 2 and having fun and little difficulty creating a new Java web application from scatch. My question is where do I find information on Java Studio configuration to allow Java Studio to load up and modify Java server pages/forms in an existing Java application that I did not write?
The Java application has been created with Javabeans and using BEA Weblogic version 7, with a SQL-Server 2000 database backend.
Below is a bit of code out of one of the main Java forms.
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import="psdi.jsp.beans.*, psdi.jsp.common.*, psdi.jsp.app.wotrack.*, psdi.jsp.util.* , psdi.mbo.* , psdi.util.* "%>
I have looked around and have not found what I need to setup in Java Studio to allow me to load up a form and view it in the Visual designer, I keep getting errors on the psdi. references and cannot load up any pages.
I see on the server install ia folder under the main root <DIR> called <apps>, and inside the <apps> folder is a folder called <jsp> and in the <jsp> folder are sub folders for each main module within the application with all the related .jsp files. I have been manually editing the .jsp files using Windows Notpad and saving the changes. Then I rebuild the .ear file and my changes work fine. Since I have a lot of changes to make there has to be a better way than using Notpad.
My hope is somewhere is a point-by-point document on what to so I can use Sun Java Studio 2 to make my changes in a visual IDE.
Any assistance would really be appreciated.

Hi Giri,
Yep, this I know,b ut when I do I get errors messages and am looking for some form of point-bypoint instuction that better explains how to setup up custom libraries in Sun Java Studio, custom tags, etc.

Getting error when trying to expose the java class as webservice

I am new to webservices and ESB.
I have two custom schemas. LegacyCustomer.xsd and CommonCustomer.xsd. I am compiling these schemas using JAXP. I am trying to map one custom data to another data using java class. I am trying to expose this java class into webservice.
public class Test implements Serializable {
private static final long serialVersionUID = 1L;
public Test() {
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CustomerType custType = new CustomerType();
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Why do we need custom serializer here? And if this is mandatory how can we define this custom serializer?

Thanks for your reply...
I tried second option that you specified first. I did the transformation of objects using xslt. It is working fine.
But I couldn't able to do this using first method...,
When I tried to compile the schema using jaxp it is actually creating classes without the private variables. and hence it is not able to recognize those variables to generate the wsdl.
But I am not sure how to generate the classes with those private variables and getter and setters (to generate wsdl specification it seems to be mandatory one).
Can you please tell me how can we do the schema compilation (other than xml beans and jaxp.... I tried both)?

How can I run a java-application on starting of Windows 2000

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hi,
can someone help me how to implement logging for method entry parameters and
method exit return value.
can someone help me how to use log4j and integrate it to the method entry
logging and method exit logging.
Here what i need is without writing the log statements for the method entry and
method exit i need to log it to the file
along with other log4j debug statements i provide in the file.I should be able
to configure whether to enable/disable the logging
for method entry and method exit. In method entry i should be able to log the
parameters the method take and in method exit
i should be able to log te return value to the log file, before the method is
returned to the callee.
i hope i am clear
Thanks in advance.

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HIH
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Check this document
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/d0cb32c5-36a7-2910-2c9b-ba4a5bbdbb56
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/padmanaban
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hi,
can someone help me how to implement logging for method entry parameters and
method exit return value.
can someone help me how to use log4j and integrate it to the method entry
logging and method exit logging.
Here what i need is without writing the log statements for the method entry and
method exit i need to log it to the file
along with other log4j debug statements i provide in the file.I should be able
to configure whether to enable/disable the logging
for method entry and method exit. In method entry i should be able to log the
parameters the method take and in method exit
i should be able to log te return value to the log file, before the method is
returned to the callee.
i hope i am clear
Thanks in advance.

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Edited by: deepakchandaran on Sep 20, 2007 7:10 AM

You could search the forum and Google.
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http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

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-=-=-=-
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OrganizerBottomBar
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Meghana wrote:
Hi,
I have existing web application running on tomcat server. Can I move it to portal
server ? If yes, what do I need to do?
Thanks in advance,
Meghana

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Can I expose existing java applications as webservices

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