I am new to web services and studing Jax-WS web services these days. I created a little web service and host it in tomcat server and created a java web service client for accessing the service as well. But I am having a little confusion in the web service client, because in the client we generate a stub for accessing the service.
Here is it using RMI for invoking the web service???
According to my knowledge tomcat is a web container and it is not supporting for RMI.
I searched this through the internet and I was unable to find the clear answer. Can anybody please simply explain me how does it happen.
If the tomcat is not supporting to RMI how does it invoke the web service. I have this confusion since it uses the stub that we generated using wsimport command.
thanks a lot
Here is it using RMI for invoking the web service???
Http. The web service client would create a http request (just like how a browser does when you request a url), convert your request object to an xml payload and invoke your service end point. Different vendors of JAX-WS may use different implementations, but it is usually some form of HttpURLConnection
HttpClient is a popular package to create Http connections from a java program.
Related
I have a web application java in internet and a web service (SOAP) in intranet. I need to call only two of method web services..
What is the best way to do this? I have to guarantee the necessary security because the APPLICATION is on the internet but I can not allow free access to the intranet or access to the web service and all its methods. How to do it?
How do you invoke web services from the backend ?
HELP ME PLEASE.
As i know SOAP allow you to use Statefull. Some info
So you can use JAAS for that, see here
I created an Eureka server and two Service Appications that are my Eureka Clients. These applications and Eureka are properly running and register themselves on Eureka.
How can I call the Eureka Server from an external API to call my Service Applications? I tried doing the following, but it didn't work:
http://myeurekaserver/my-service/test
We do something similar using Eureka REST APIs as documented here. The program would have to make the REST call, collect the output of the GET /eureka/v2/apps/appID or GET /eureka/v2/apps and parse it to locate the running service instance(s), and invoke the target instances. This approch should work for any programming language/script that supports REST and/or HTTP invocations. Some of our external systems uses one or more of cURL, Java libraries or Python HTTP client to call Eureka server using these REST APIs to locate the target services. That should work for you.
I have a WCF Web Service that is hosted in a Windows Service. The WCF Web Service is to be used by a Java based frontend, which will make http calls and will receive a JSON response. The problem I am getting is whilst I can get the web service to run, if I type "mydomain.com/myservice/mymethod", I get bad request back.
The web service initially had mex set for service end points, and I tried the same again, but still no luck. I took mex off, but still no luck. All this was being set on the start of the windows service. The web service is only using BasicHttpBinding.
So, my question is this - "How do I can a web service method using basichttpbinding hosted in a window service through the browser in order for this to be used by a non .net client?"
Thanks
WCF uses SOAP as its primary native protocol for communication. If your client does not want to communicate using SOAP you can make your WCF service RESTFUL with ease. Have a look at the following:
WCF REST Services
Brand new services ideally should be implemented in WebAPI rather than RESTFUL WCF. Also have a look at
REST WCF vs. WebAPI
I know how to make web application in technologies like jsp/servlets and applications servers.
Suppose I make some utility method for particular application say ‘A’ and its working fine no any other web or desktop application in need of this method.
Same thing I can provide such utility method via web service like Rest/Soap.
So why I need web service in this scenario, I can imagine if such service is useful for other application and we provide it as web service then its fine.
Can anyone give me some answer which clear my doubt?
Thanks
Based on Your Comment, i would like to clarify.
Web service is a concept in which you expose a utility or functionality to the world.
Any one in the world can access the same by first establishing ground rules as in SOAP via WSDL.
The Services can serve any number of requests from any application provided it sends the proper input request needed by your service.
In case you have built an application A with a utility functionality X,
Then application B,C,D and so on can access the Web Service.
All it needs is:
the URL for the Service which is exposed through network to the consuming application
The requested parameter format
and the Proper Response format.
Once this is setup, any application, not just in java, can access the service so even .Net applications or PL/SQL applications can access the Web Service Utility.
I was just wondering, whether is it possible to deploy a JAX-WS and access it from a browser without the need to install any software or proxy classes ..
Of course, JAX-WS is just a library built on top of SOAP, which is built on top of XML, which is built on top of HTTP (duh!)
If you have SOAP web services (the fact that it was developed using JAX-WS is irrelevant), any application capable of sending and receiving XML over HTTP can call it. We are successfully accessing our back-end web services using AJAX POST (the web services must be deployed on the same domain as your front-end due to same-origin-policy).
As far as I've seen it's not possible, since you need to have proxy classes in order to call the JAX-WS functions ... but maybe I'm wrong !