I am new to developing web services using java. I have an academic project where I need to do dynamic service composition. For that I can't directly create a service-client for a particular service because if I do so then that client will call that particular service only. Client need to search various web services and then out of those services select any one at run time and also call that service at run time.
I was able to develop the web service(JAX-WS) using Eclipse(indigo), I also created the client for that web service and every thing is working fine. Now my problem is that while creating the client I am hard coding the client to call that particular web service only(since I am creating the client using the WSDL file of the service). However I actually need to call any one of the searched service, but for that I need to publish the service some where then discover it and then call it.
I tried publishing the service to juddiv3. But on juddiv3 I could only publish the sample service supplied with the juddiv3. When I try to publish service created by me then it is not getting displayed in the group of published services.
Is there any other UDDI server which I could install on my local machine and then publish and discover the service from that. Also I was not able to figure out how to create a client that will modify itself at run time to call any one service out of various searched services.
Kindly provide the necessary steps and code.
Thanks
You can use jUDDI (http://juddi.apache.org/ ).
juddi is based on UDDI v2.0, v 3.0 .
Here, you can publish as well as discover your web service.
For integration, you have to make some application which integrates with jUDDI.
But I think for your academic project, and for your purpose, jUDDI is best suitable! ( :) )
jUDDI has a boat load of examples in the source code trunk. You may want to check them out. It's difficult to guess what the problem is from the little information you've provided. Consider contacting the jUDDI team for further assistance. http://svn.apache.org/repos/asf/juddi/trunk/juddi-examples/. There's also additional document for working with UDDI in the jUDDI user's guide, which is at the jUDDI web site
You cannot directly publish on jUDDI. You need to create publisher entities in jUDDI server also. You'll find Rename4Sales and Rename4Marketing examples in 'Classes' folder in the standalone server's juddi application. Use these XMLs as your basis and create your own entity. You also need to configure the server's login credentials.
I suggest you follow the tutorials on jUDDI blog.
Related
I have a composite with a SOAP web service entry point running on SOA Suite. We will have a new client for that web service, but this client cannot speak SOAP, so we will have to publish that entry point on a REST endpoint. I know I can enable REST Support to the existing web service through EM console, but I would like to have this configuration enabled by default after deploy.
My research for ways to do that using a property or attribute on a configuration plan did not get useful informations.
Does anyone know how could I achieve that?
Thanks!
REST Support is formal part of SOA Suite 12c. Download and install that and then you can easily add a REST interface to a SOAP composite. Also, 12c now installs without RCU/DB, etc - just start the Integrated WLS domain in JDev and it builds itself and you are up and deploying in under 20 mins. And this may help.
I am using Axis2 (1.5.3 currently) and Tomcat (6.0.26 currently) and am running a web service. I would like to also host HTML pages for configuring the web service.
What is the best way to go about this? I assume keeping the same context is key, but perhaps it is not.
My current distribution is located under a folder structure similar to this:
Tomcat/webapps/mycompany
With the actual service code here:
Tomcat/webapps/mycompany/WEB-INF/services/myService
In a browser, I can hit my web service by going to here:
/mycompany/services/myService
I note that I can drop actual HTML files in this path and Tomcat will, indeed serve them up.
For instance, if I put "index.html" under Tomcat/webapps/mycompany, I can navigate to /mycompany/index.html and see my html.
What I want to do is have this HTML be attached to JAR/class files that can interact with the already-existing service class files in the same context as the service. Therefore, I can have the browser configure the web service directly.
Is this possible, and is there a tutorial or something out there that will help me with this? Note that I have been working with Tomcat and Axis2 for a while now for this particular web service, but I have never actually deployed a web application/html using Tomcat before.
Thanks.
First of all what do you mean by a configuring a service. Normally in SOA world services are analogous to interfaces. IMHO you can just change a service, since their are other users that rely on the services you are exposing.
If i want to change a service i would rather introduce a new version of the service after deprecating the existing one.
Are you talking about applying QoS to existing serviecs. Then that makes sense.
Anyway, If you want to have a web-app alongside with axis2 service engine, it is possible. If you look inside the axis2 war file you'll find the web.xml entry to Axis2Servlet. It is this servlet that serves the web services requests.
So, what you need is the Axis2Servlet mapping in your web-app along with your usual servlet-mappings. Number of possible ways to configure your services using web-app files. One options is to use web-services call itself to (with authentication) to configure it.
By "configure a service", take this example:
The service has a set of datasets.
Each dataset exists in a separate database.
The service can manage 0..n datasets.
The service must be configured to know about each dataset.
This is what I'm configuring. I'm not trying to configure Axis itself or redefine the service.
I would like to host the HTML using the same instance of Tomcat that I'm hosting the web service with. It needs to manage sessions, have login capability, an whatnot, and has to be able to configure the web service live.
From what I'm reading, it's probably best to make an interface to the web service that the web application module can call into from a different context.
Is there a better way?
Now I am creating an iOS application. I also implemented some web services. My requirement is : "The user should be able to call a web service API by Sending a Text Message(SMS)". After a lot of research I found out that there a provider called Clickatell(http://www.clickatell.com/). But I don't know how can I configure it? Please help me in configuring this. Or Is there any other APIs or SMS gateways providing this service?
Disclaimer, I do developer evangelism part time at Nexmo.
Here are a few SMS APIs that I've used (I've not really used Clickatell, but I've gone through the signup process, and the following APIs seem a lot simpler to use):
Nexmo
Twilio
Tropo
All three APIs are straight forward REST/HTTP APIs.
You can call the API directly from your mobile application, however, you should consider if you really want to then compile your API credentials into your application. It may be better to host a kind pf proxy that your application uses - here's some example code used as a verification service, but it's essentially the same concept: https://github.com/Nexmo/Verify
I would suggest to take a look at Mogreet's new Developer Web Site
Very easy to use REST/HTTP APIs and very powerful. It supports sending SMS/MMS with awesome quality for all media types.
We have a need to add sitecore items programmmtically. To achieve this we are basically creating new WCF Service as the standard webservice provided by sitecore is not serving our purpose. The new WCF service created in VS2010 is pushed/published to same folder as standard webservice(sitecore/shell/webservice). For some reason the service doesn't work at all throws configuration errors.
Could anyone let me know where exactly this custom service should be deployed.
I had lots of issues deploying both WCF and old-style (.ASCX) web services in a Sitecore-controlled application. I never was able to find a satisfactory solution, even after speaking with their tech support. I ended up creating my own HTTP handlers to accept POST data and used those instead of WCF. I know it's not the best solution, but it worked.
I'm learning about web services and most of the resources I've been reading talk about registering your web service once it's ready for use by others. Is registering a web service required to use the service?
For example, let's say I have a web application on a company intranet and I create another web service app that retrieves some sort of useful information to be displayed on this private intranet site. Would this new web service require being registered just so my web app can use it or can the web app simply interface directly to the new web service (following the WSDL file) without the need of some sort of UDDI registry?
You can certainly use the service without the UDDI registry.
I have created several Web Services and have immediately used them without registering them. Registration gives others confidence that your Web Service is legitimate and descriptions of how to interact with those services.
Imagine doing development where you have to register any Web Service before using it. Yikes!
No, not at all.
You are probably talking about API directories you may register your WS at. Like UDDI or what it’s named. Entirely optional.
Nobody uses UDDI anymore. It's an idea whose time has come and gone.
It was thought that there would be public registries of web services that everyone would use to find a web service to meet their needs. That never happened.
How could either the service or the app know whether or not the service was registered?
Furthermore, why would they care?
If you're trying to use service orientation the right way, your web services should be registered within a service registry. The registry should contain the published contract of the services and any meta-data that helps the discovery process.
A different questions is: does a service consumer program need to look up a registry and dynamically bind the service it needs to call? NO, NOT AT ALL.
But then, what discovery process am I talking about?
I'm referring to a human (developer, architect, etc.) who is designing/developing a program that needs to call a service. This person should have means to search what services are available in his/her organization. If not, the benefit of reusing services is compromised.
Discovery is also about humans finding out there's a service somewhere in the IT organization that offers the functionality they want.
In this case, the registry can be as simple as an html report that is created and updated manually or generated by parsing (xslt comes handy) the wsdl files.