Servlet and Web services

Is it possible for a java servlet program to invoke a web service hosted by ASP .net server?
please advise some documents for my reference as well if any

How do you mean invoke it? I take it you want to make calls to the web service. If this is the case you need the wsdl file for .NET web service from which you can create the sub classes.
Hope this helps

Similar Messages

Sharing config with Servlet and Web Services

Hi,
I am building a Servlet wrapper and a jaxrpc wrapper for my application, so that my client can invoke either servlet or web services to access my application.
my main application library is at WEB-INF/lib and both the servlet and
webservices are in WEB-INF/classes.
I am trying to make them sharing the same configuration file web.xml so that common attributes such as log file location can be read. I know Servlet can read the context and parameters but how to make my web services app to read it, since the web services are not servlet itself but it is invoked by the JAXRPC servlet????
Thanks

The early post may answer your question:
http://forum.java.sun.com/thread.jsp?forum=331&thread=266102

Servlets and web services

hi everyone, i'm new to this ... is it possible to instatiate a servlet from a web service? my need is to implement a web service which gives a method that invokes an existing servlet and sends back it's response (which by chance will be a simple serialized xml into a String).
Thanks in advance ...
J.

Hi Jonny,
You dont really want to instantiate a servlet from your web service, you want to call it (the servlet container is in charge of instantiating servlets, and providing the necessary context for the servlet to run). However calling a servlet isnt much fun as you will need the servlet context, a request dispatcher and a HttpServletResponseWrapper.
The simplest solution, if you are really just trying to capture some XML output, would be to put the code that generates the XML into a seperate class and call it from both the servlet and your web service.

Servlet Calling Web Service

Hi
I need to call a web service via a servlet
Both web service and servlet files are located on the same PC , but in a different directories
the web service is working OK when I use a command line,
However , when I try to use a Servlet method to activate the web service and retrieve some information public void doPost (HttpServletRequest request,HttpServletResponse response) throws   ServletException ,IOException{
serve.businessVector = (Vector)uddiClient.getuddiInformation("dublin");
The service Client is the activated ok and when the programm reaches a particular point in the code    Service service = new Service(); I receive an error as follows
java.lang.NoClassDefFoundError
     at org.apache.axis.client.Service.getAxisClient(Service.java:143)
     at org.apache.axis.client.Service.<init>(Service.java:152)
Could someone please direct me on what is going on
Or am I using the wrong approach ?
and here is the method I am using for the service client
public Vector getuddiInformation(String location )throws Exception {
String endpoint = "http://localhost:8080/axis/UDDIRegistry.jws"; // here where the jwsfile is located
// set the end point ie the URL for the call
Service service = new Service();
Call call = (Call) service.createCall();
call.setTargetEndpointAddress(new java.net.URL(endpoint));
call.setOperationName("readXML");
// now invoke the method in the registry
// ie int the UDDIRegistry.jws
Vector ret = (Vector) call.invoke(new Object[] {new String(location)});
uddClientVector = ret ;
return uddClientVector;
}Thanks
IB

java.lang.NoClassDefFoundErrorYour classpath is apparently incorrect, to put it
simply. When you "run it from the command line" you
are running it differently, with a different
classpath than you are when this is encountered. This
being a J2EE app, your WAR or EAR file (or
directory-exploded equivalent) needs to contain all
the dependent classes/jars, and apparently you
haven't created that correctly.I have checked the classpath and it seems to be ok
The jar file ( axis.jar ) that I think is causing the error is included in the AXISCLASSPATH and in the CLASSPATH
OS is Win XP
the following errors remain -->
java.lang.NoClassDefFoundError
     at org.apache.axis.client.Service.getAxisClient(Service.java:143)
     at org.apache.axis.client.Service.<init>(Service.java:152)
     at TempServelet.start1(TempServelet.java:72)
     at PostHTMLResult.fillArray(PostHTMLResult.java:65)
     at PostHTMLResult.doPost(PostHTMLResult.java:83)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:716)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
and 25 more errors
I have checked the documnts for Tomcat 4.1 and axis for the setting the classpath , I dont know If there is a special setting I need to do ??
Please advise
Thanks
IB

Security for SOA and Web Services

Dipak Chopra's 09 Dec 04 "Security for SOA and Web Services" piece has been a terrific starter for me as I start to delve into this topic. Does SAP/the SDN plan to publish an SAP-specific roadmap to show the adherence to and adoption of these standards in NetWeaver? (Or maybe there is such a published roadmap that I am unaware of?)

Hi Randy
SAP follows and participates in Security and other Web services standards very closely as we recognize the opportunity they present our customers for developing solutions and integrating systems faster at lower cost.
However many of the standards are still in development and so are not quite yet ready for "prime time". This means that we can't really publish a "road map" as it would be continually changing. However, if you want an idea on which standards SAP thinks are important, please take a look at this presentation [1] which was delivered at the last Tech Ed.
David
[1] https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/documents/a1-8-4/the impact of industry standards on sap netweaver.pdf

XML and Web Service Data Source Missing in Crystal Reports for VS

I would like to use a Web Service as the data source for a Crystal Report that will be running outside of my Visual Studio application. So setting the data source to the web service in code is not possible. My understanding is Crystal Reports has a connection (in the Database Expert under New Connection) named XML and Web Service. Here you can select web service and enter the WSDL URL for the web service. However it does not appear in the list for Crystal Reports for Visual Studio. Does this connection type come with the Visual Studio version of Crystal Reports and if not is their a way to obtain it?
Thank you for your assistance.

None of the bundled versions of CR have the driver. Reason is that the driver responsible for these connections requires the Java framework and I suspect MS would not be too pleased if we installed the Java framework. The stand alone versions, since they are not part of any bundle can and do install the Java framework and the driver. Note that even the latest release of CR - CRVS2010 does not have the driver as it essentially becomes a bundle or a VS2010 plug-in.
So, the short of it is; you have to obtain a stand-alone version of CR. I'd recommend CR 2008 (12.x) as CRXI R2 will run out of support in June of this year.
- Ludek

Can't run wiki and web services at the same time?

I'm a newbie with Lion Server, but I've been running several web sites successfully for about 6 months. I'm up to Server 10.7.4.
I've been trying ever since the first installation of Server to get the wiki service running. I had absolutely no luck until I turned OFF the web service (always got the "URL does not exist" error when I tried to create a group wiki from inside the Server app). With the web service off, it all starts up fine and I created my first wiki (woohoo). Turning web service back on kills access to the wiki. I don't find reference to this in any of the dicussions, and especially not in Apple's documentation.
Are the Wiki and Web services mutually exclusive? Or is there a way around this?
I'm using Dyndns to provide me with sub-domains to use, and I've dedicated one of them to the wiki service. Traffic comes in on port 8080, where my web sites are on port 80.
Thanks for any pointers...
edbok

LR supports tethering using a Canon DLL and EOS Utility probably also supports tethering or at least uses something from a similar Canon DLL. You probably cannot have two different versions of that DLL loaded at the same time, so it makes sense there are problems.

Message Monitoring and Web services Sequences .. SOAMANAGER

When can I use Mesage Monitoring and Sequence Monitoring .
We are making a proof a concept and we are the following.
1. A program which executes a proxy and with this proxy we are consuming a web services.
2. The proxy and web services were implemented in the same Abap Machine .
3. We execute the test and everything works very well and we consume the webservice and the program displays the expected result.
Now want to know How can we use the Message Monitoring and the Sequence Monitoring . Is this posible ? Do we have to make any previous configuration?
We don´t have any XI installation and for that we wonder if we can monitorize the webservices sequences ?
Any idea about if we can realize such king of actions ..
Many Thanks

Hi
I assumes u have dual stack.
You can do the sequence monitoring with or without PI. But without PI you would achieve that thing on the local machine.
You have to do those things at Java End using SAP NWA.
Please see this link
http://help.sap.com/saphelp_nwce10/helpdata/en/46/b00c2a99930764e10000000a1553f6/content.htm
http://help.sap.com/saphelp_nwce10/helpdata/en/46/9cb2b57ded371ae10000000a11466f/content.htm

SSL certificates and Web Services Usage inside Oracle Database Questions!

We have implemented a specific business logic using PL/SQL for our client, so we open a file and process each line of this, doing something in the Database and also call a Web Services (Service1) using UTL_HTTP package. Service1 runs in a Windows 2008 Server in the DMZ as Database server.
Service1 is already working, and we can call the service from PL/SQL without troubles.
However, according with security client's policies they requires all Web services be consumed via https including Service1, so we must to follow the procedure established for Oracle in order to enable the calling of service1 via https from the Database.
Our client's DBA and IT Team are concerned about two subjects before to continue to follow the certificate installation:
     - SSL Certificates:
1- Can installed certificates in the Database put in risk the stability of the database?
          2- Can installed certificates in the Database generate performance issues?
          3- Can installed certificates reloading the Databases?
          2- Can installed certificates in the Database generate security issues?
     - Web services:
1- Can web services calling from the Database put in risk the stability of the database?
2- Can web services calling from the Database generate performance issues?
3- Can web services calling from the Database generate security issues in the DMZ?
Could you please give us any clues, about the possible negative impact related with the SSL certificates and Web Services Usage inside Oracle Database, if it’s the case this impact exists?.
Those are the links describing the procedure mentioned above.
1 -http://www.kotti.es/2009/11/oracle-wallet/
DB: Oracle 9i.
Average number of lines in file: 300
Periodicity: Twice at day.

Thiago:
You are correct in that there should be no problem interacting with a Web service that has an HTTPS endpoint as long as you create a wallet and specify it when you make your UTL_HTTP calls, like the PayPal example.
I am not aware of a PL/SQL utility to create a XMLDsig Standard message, but if you find some Java source out there that does it, you may be able to follow a technique I used for a similar use case:
http://jastraub.blogspot.com/2009/07/hmacsha256-in-plsql.html
Regards,
Jason

Custom Portal Services and Web services

Can you please tell me what exactly are "custom portal services" and "web services" with a business like/ real life example?
How do you go about developing deploying and utilizing these services in Portal?
Thanks.

Hi navin,
Thanks for the par file.
Duly awarded points.
I need your help again.
I wish to use the method
public String getWelcomeString(String name)
in my own portal application to test usage of portal services.
So I uploaded your par file on my server.
Then I added the api and core jar files which came along with your par in my project as external jar files.
I imported com.wickes.WickesService.*;
Next, to use the service I coded:
IPortalRuntimeResources rs =
PortalRuntime.getRuntimeResources();
IWickesService ws = (IWickesService) rs.getService(IWickesService.KEY);
But now I am stuck and I dont know how to proceed.
Please help.

Enterprise services and Web services

Hi Everyone
I need documents about Invoking enterprise services from Netweaver PI and web services from Netweaver PI, I can find only NetWeaver CE, but not PI. So help, any links?? or pdfs?? or ideal would be some demo example of invoking a web service using PI.
Thank you
Vijay

Hi,
Since you would need to wet your hands by playing with webservice and PI. Please consider the following links.
SOAP scenario
/people/siva.maranani/blog/2005/09/03/invoke-webservices-using-sapxi
https://weblogs.sdn.sap.com/pub/wlg/1334 [original link is broken] [original link is broken] [original link is broken]
https://weblogs.sdn.sap.com/pub/wlg/2131 [original link is broken] [original link is broken] [original link is broken]
https://weblogs.sdn.sap.com/pub/wlg/1442 [original link is broken] [original link is broken] [original link is broken]
Regards
joel
Edited by: joel trinidade on Mar 25, 2009 10:41 AM
Edited by: joel trinidade on Mar 25, 2009 10:43 AM

How to expose custom methods of servlet as web services

Can i know how to expose the custom methods of the servlet as web services. if it is not posssible then what alternate ways are possible other than ejbs?
regards

Hi
I want to know that whether the custom methods of servlet can be exposed as webservices or not?
Secondly is there init method like we have in servlets so that we can do all the one time loading in the init() method.
regards

GTC Connector using SPML Format Provider and Web Services Transport Provide

Hello All,
Did any body create a GTC connector which uses SPML Format for Format Provider and Web Services format for Transport Provider?
Is there any doc which talks about the same?
I need to provision to a system over web services and I thought GTC using the above formats should be an easy approach. Am I right?
I was trying to follow:
http://download.oracle.com/docs/cd/E14571_01/doc.1111/e14309/devgtc.htm#BABDFDFE
But Iam getting lost in the immerse details.
Thanks in advance.

Hi ,
I tried creating one and am getting the following error while provisioning:
SPML Response failed V2 schema validation
Th eoracle document says :Ensure that the SPML response returned by the target system conforms to the SPML V2 standard specification
Please help me with the same. What is it that needs to be done here.
Thanks
WIP

Error during EAR deployment with EJB and web service

I created a simple stateless EJB with one method called echo that returns a string. I created a web service using the wizard, did a build and deployed. The deployment did not report an error, but the logs in the visual administrator showed the follwoing message, and the web service did NOT deploy.
Am I missing something related to EJB and web service security?
PLEASE HELP ME.
>>> Warning: delete security configuration [apps/com.areva/ear/ejb/security/com.areva~ejb.jar]
[EXCEPTION]
java.lang.Exception
     at com.sap.engine.services.security.server.PolicyConfigurations.unregisterPolicyConfiguration(PolicyConfigurations.java:153)
     at com.sap.engine.services.ejb.EJBAdmin.remove(EJBAdmin.java:2538)
     at com.sap.engine.services.deploy.server.application.RemoveTransaction.removeApplication(RemoveTransaction.java:294)
     at com.sap.engine.services.deploy.server.application.RemoveTransaction.prepare(RemoveTransaction.java:178)
     at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhasesOnOneServer(ApplicationTransaction.java:299)
     at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhases(ApplicationTransaction.java:321)
     at com.sap.engine.services.deploy.server.DeployServiceImpl.makeGlobalTransaction(DeployServiceImpl.java:3028)
     at com.sap.engine.services.deploy.server.DeployServiceImpl.remove(DeployServiceImpl.java:820)
     at com.sap.engine.services.deploy.server.DeployRuntimeControlImpl.remove(DeployRuntimeControlImpl.java:271)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sap.pj.jmx.introspect.DefaultMBeanInvoker.invoke(DefaultMBeanInvoker.java:58)
     at com.sap.pj.jmx.mbeaninfo.AdditionalInfoProviderMBean.invoke(AdditionalInfoProviderMBean.java:289)
     at com.sap.pj.jmx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:944)
     at com.sap.pj.jmx.server.interceptor.MBeanServerWrapperInterceptor.invoke(MBeanServerWrapperInterceptor.java:288)
     at com.sap.engine.services.jmx.CompletionInterceptor.invoke(CompletionInterceptor.java:400)
     at com.sap.engine.services.jmx.RedirectInterceptor.invoke(RedirectInterceptor.java:340)
     at com.sap.pj.jmx.server.interceptor.MBeanServerInterceptorChain.invoke(MBeanServerInterceptorChain.java:330)
     at com.sap.engine.services.jmx.MBeanServerSecurityWrapper.invoke(MBeanServerSecurityWrapper.java:287)
     at com.sap.engine.services.jmx.MBeanServerInvoker.invokeMbs(MBeanServerInvoker.java:157)
     at com.sap.engine.services.jmx.ClusterInterceptor.invokeMbs(ClusterInterceptor.java:220)
     at com.sap.engine.services.jmx.ClusterInterceptor.invoke(ClusterInterceptor.java:803)
     at com.sap.engine.services.jmx.MBeanServerInterceptorInvoker.invokeMbs(MBeanServerInterceptorInvoker.java:102)
     at com.sap.engine.services.jmx.connector.p4.P4ConnectorServerImpl.invokeMbs(P4ConnectorServerImpl.java:61)
     at com.sap.engine.services.jmx.connector.p4.P4ConnectorServerImplp4_Skel.dispatch(P4ConnectorServerImplp4_Skel.java:64)
     at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java:291)
     at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java:183)
     at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java:119)
     at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:37)
     at com.sap.engine.core.cluster.impl6.session.UnorderedChannel$MessageRunner.run(UnorderedChannel.java:71)
     at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:94)
     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:162)

I have the same message. I am running sp11.
Does anyone have an answer for this?????
>>> Warning: delete security configuration [apps/avalero.com/rtfa-ear/contextRoot]
[EXCEPTION]
java.lang.Exception
     at com.sap.engine.services.security.server.PolicyConfigurations.unregisterPolicyConfiguration(PolicyConfigurations.java:153)
     at com.sap.engine.services.servlets_jsp.server.container.WebContainerHelper.removeSecurityResources(WebContainerHelper.java:905)
     at com.sap.engine.services.servlets_jsp.server.container.WebContainerHelper.remove(WebContainerHelper.java:447)
     at com.sap.engine.services.servlets_jsp.server.container.RemoveAction.remove(RemoveAction.java:50)
     at com.sap.engine.services.servlets_jsp.server.container.WebContainer.remove(WebContainer.java:150)
     at com.sap.engine.services.deploy.server.application.RemoveTransaction.removeApplication(RemoveTransaction.java:294)
     at com.sap.engine.services.deploy.server.application.RemoveTransaction.prepare(RemoveTransaction.java:178)
     at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhasesOnOneServer(ApplicationTransaction.java:299)
     at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhases(ApplicationTransaction.java:323)
     at com.sap.engine.services.deploy.server.DeployServiceImpl.makeGlobalTransaction(DeployServiceImpl.java:3033)
     at com.sap.engine.services.deploy.server.DeployServiceImpl.remove(DeployServiceImpl.java:821)
     at com.sap.engine.services.deploy.server.DeployRuntimeControlImpl.remove(DeployRuntimeControlImpl.java:271)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sap.pj.jmx.introspect.DefaultMBeanInvoker.invoke(DefaultMBeanInvoker.java:58)
     at com.sap.pj.jmx.mbeaninfo.AdditionalInfoProviderMBean.invoke(AdditionalInfoProviderMBean.java:289)
     at com.sap.pj.jmx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:944)
     at com.sap.pj.jmx.server.interceptor.MBeanServerWrapperInterceptor.invoke(MBeanServerWrapperInterceptor.java:288)
     at com.sap.engine.services.jmx.CompletionInterceptor.invoke(CompletionInterceptor.java:400)
     at com.sap.pj.jmx.server.interceptor.BasicMBeanServerInterceptor.invoke(BasicMBeanServerInterceptor.java:277)
     at com.sap.jmx.provider.ProviderInterceptor.invoke(ProviderInterceptor.java:255)
     at com.sap.engine.services.jmx.RedirectInterceptor.invoke(RedirectInterceptor.java:340)
     at com.sap.pj.jmx.server.interceptor.MBeanServerInterceptorChain.invoke(MBeanServerInterceptorChain.java:330)
     at com.sap.engine.services.jmx.MBeanServerSecurityWrapper.invoke(MBeanServerSecurityWrapper.java:287)
     at com.sap.engine.services.jmx.MBeanServerInvoker.invokeMbs(MBeanServerInvoker.java:157)
     at com.sap.engine.services.jmx.ClusterInterceptor.invokeMbs(ClusterInterceptor.java:220)
     at com.sap.engine.services.jmx.ClusterInterceptor.invoke(ClusterInterceptor.java:803)
     at com.sap.engine.services.jmx.MBeanServerInterceptorInvoker.invokeMbs(MBeanServerInterceptorInvoker.java:102)
     at com.sap.engine.services.jmx.connector.p4.P4ConnectorServerImpl.invokeMbs(P4ConnectorServerImpl.java:61)
     at com.sap.engine.services.jmx.connector.p4.P4ConnectorServerImplp4_Skel.dispatch(P4ConnectorServerImplp4_Skel.java:64)
     at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java:294)
     at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java:183)
     at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java:119)
     at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:37)
     at com.sap.engine.core.cluster.impl6.session.UnorderedChannel$MessageRunner.run(UnorderedChannel.java:71)
     at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:94)
     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:162)

Messages Monitoring and Web Services Sequences .... SOAMANAGER

When can I use Mesage Monitoring and Sequence Monitoring .
We are making a proof a concept and we are the following.
1. A program which executes a proxy and with this proxy we are consuming a web services.
2. The proxy and web services were implemented in the same Abap Machine .
3. We execute the test and everything works very well and we consume the webservice and the program displays the expected result.
Now want to know How can we use the Message Monitoring and the Sequence Monitoring . Is this posible ? Do we have to make any previous configuration?
We don´t have any XI installation and for that we wonder if we can monitorize the webservices sequences ?
Any idea about if we can realize such king of actions ..
Many Thanks

hi,
short answer: you can't. to my knowledge there is no such thing as message/sequence monitoring outside of PI/XI.
the only thing you can do is to enable debugging and access some debugging info from ST22. other than that you do not have access to the original (XML) message, the HTTP headers or the ST(simple transformation) info or anything else.
regards,
anton

Servlet and Web services

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