I've been tasked with building a web service in java, and I've been given an existing WSDL file which seems to define everything. I need to build my java around/using this (Not consuming it though) . How would I go about using this in eclipse?
I've tried going "New Web Service Client" and selecting the WSDL However the code it generates doesn't include any of the methods (which is just 1) or the parameters from the WSDL.
You can use Apache CXF WSDL to Java for doing this thing.Look at here Click here and also google it for more details
Also you can use SoapUi for doing this. I think soapUi way is more easy than the previous method click for soapUI tutorial
WSDL consist every detail about how your web service should look like and the functionality
I think if you're trying to write the web service using an existing WSDL, you're probably going about it the wrong way. It looks like from the command that it's trying to build you a client, not a server.
I had some luck with the WSDL-first tutorial in the Spring-WS library. I would take a look at that.
http://static.springsource.org/spring-ws/site/reference/html/tutorial.html
Related
I want to write a java client to use some medical api. On there website they have uploaded a bunch of WSDL files and corresponding XSD files, along with documentation explaining the SOAP messages format to consume each service.
In past I have used REST API of Amazon and Azure to write java client but this seems to be different.
I have read about JAX-WS and also tried to create a dynamic web project in Eclipse using Tomcat but nothing working (https://wiki.eclipse.org/Creating_a_Java_Web_Service_Client).
Could some one explain me basic steps on how to write a simple java
client to **consume these WSDL and XSD files using SOAP messages** and
point me to really good tutorial where I can understand the underlying
concepts?
Till now:
I read about basic wsdl and xsd structure.
Tried to use Postman and SoapUI to make service call to these services.
But struggling to make first step towards making a simple java client project to interact with these services.
I would recommend you go check SAAJ API
I have a WSDL url(http:localhost:8080/userdata?wsdl) and I want to create a request to this webservice so I can fetch the data for further processing. Can I do this without wsimport?
If I have to create package from wsimport, how I can create a client which will use generated classes to create the XML request?
If I can do this without wsimport , how I can create a client which will create the XML request?
New to webservices, links to documentation would be appreciated. I am trying to understand this at the moment http://java.dzone.com/news/5-techniques-create-web-servic
You can use CXF wsdl2Java to generate a client code for the web service.
Once you run the wsdl2java , you will get a set of java classes generated for you. You can then use those classes to call the services without any explicit conversion of XML - the underlying framework will do it for you automatically. You can start with http://cxf.apache.org/docs/how-do-i-develop-a-client.html
I proposed CXF while you can look for many other alternatives - However, i have found CXF to be very feature rich and will help you in developing/working with web services.
On top of what Akhilesh said you can also create a Dynamic client for invoking WSDL. I have done it recently and i found it a little bit better then using CXF as dynamic client does not generate any code whatsoever. You just pass in the parameters to it and it does all the job for you. You can find a "shell" to build your own client HERE
I wrote a java web service on Netbeans 6.9.1 and deployed on GlassFish 3.0.1
I have a wsdl url like this "http://localhost:8080/web2/service2Service?wsdl".
How can I use this url to access this web service from another java application.
Thanks
You need to generate some Java that represents the client's view of the Web Service and then invoke that Java. Here's an article which explains some of the detail.
Generating client from WSDL in Eclipse
The general idea is that you generate some Java classes from the WSDL. Those classes act as a proxy for the service you want to call. Your java invokes methods on the proxy objects, the generated code creates the appropriate SOAP messages, sends the HTTP request, interprets the response and your code just sees a Java result.
I just use the tooling built into Eclipse, but you will also find other suitable generators, for example in Apache's Axis
1º U must save the content in a "myWebServices.wsdl" file
2º Run your Wsdl converter, all compilers have one of this, normally the name is WDSL.EXE
This process will create a new file with NameSpace or Package with the definitions of webservices built in.
3º Then imports this package or built a library.
Develop web service Client in second application.
You can use Netbeans to create web service client by giving your wsdl url
The document at this url is the actual wsdl (a description of the actual webservice, written in WebService Definfition Language).
The description includes information about the services url, the protocol(s), the method names and and data objects. Your application will use that information to call the remote methods of that service.
The protocol may or may not be SOAP, and without knowing the webservice details, it's quite impossible to recommend a toolset or methodology to use the webservice, there is no general approach. In most cases we see SOAP, for those services I recomment soapUI as a general tool to use and test SOAP based webservices and apache axis to implement java based service consumers.
Previous developers created a webproject which consumes a webservice in .net platform and they wanted me to use this webservice on jsp. I read netbeans tutorials and find out that webservice is irrelevant to platform. However the problem is at .net project I could not find a file whose extension is .wsdl or a werbservice.amsx.There is a service.cs which was implemented has webservice commands a lot.How i can consume or use this service on a jsp file? I would be appreciated if you can help me. Because it takes my hours to read documentations and I do not have any clue how to use it on .jsp.
Best Regards
Altaico
Read this detailed tutorial on C-sharpcorner.com on how to reference and use asmx web services in JSP
For Web Services in general to function correctly you need to have a WSDL. Most modern web service stacks can generate these automatically.
Have a closer look.
Try to call the asmx file from your browser with ?wsdl query string.
I am new to web services. I have a requirement in my project. I have to consume the web services of our vendor in my project. All he has shared with me is a WSDL file and a document about the description of the the different operations.
Question:-
1: What do I need to do consume these web services in my java project? I have been advised to use axis2, eclipse with tomcat6.
2: Do I need to ask for some other files/information from WS vendor OR wsdl file is enough to consume these web services?
3: Do I need to write a java WS client (using axis2 plugin) or another webservice which will talk to vendor web service?
Please suggest the best possible way.
I am sorry if the question sounds like a naive..
Axis is a solid choice for such application.
You need to generate an axis client based on the provided WSDL. Then you import the generated client and use it's methods. You can see the details of this process here (read whole page or starting from the linked section): http://ws.apache.org/axis2/1_0/userguide3.html#Writing_Web_Service_Clients_using_Code_Generation_with_Data_Binding_Support
You could also need some entry-point (WebService URL).
You need to generate a client, not a webservice. See point 1.
Don't use Axis if you need ambient authentication in a Windows environment. I went down that path and ended up going with Apache CXF - which seems better to me anyhow.
You can use SOAP UI to test the web service. It'll read the WSDL, let you create requests by filling in values, and display the response that you get back. It might help you get a better understanding of what the service does before you start writing your classes.
You don't need to create a new web service in order to consume a web service, you need to write a web service client.
Similar question to this one:
Steps in creating a web service using Axis2 - The client code
All the standard web frameworks have a command (normally called wsdl2java) that will read the WSDL and then generate a java based client object.
I can recommend Axis2, but another popular choice is CXF