I am looking for some tutorials or resources that may assist me with a problem in Web Service Composition, where I need to a generate WSDL with given inputs and parameters. I want to start from scratch like java with some "element" method that can output a basic WSDL hierarchy. Thank you.
P.S. I did spend a reasonable amount of time looking for above-mentioned stuff but I do consider the probability of encountering an open source implementation from this community.
Have a look at the tools provided in the Apache CXF project, which allows generating WSDL from Java source and vice versa. Similar functionality is provided by Apache Axis2.
Related
I am new to Web services. I need to invoke a web service whose definition is in http://api.search.live.net/search.wsdl . I need to do a search of any keyword by using this web service.
I search on the net but could not find any solution. Any idea how to invoke the web service. I need to use Java.
Download axis2.
After extracting it, under the bin folder there is a tool called wsdl2java, this is used to generate stubs from the WSDL that can communicate with the webservice.
A sample usage would be:
WSDL2Java -uri http://api.search.live.net/search.wsdl -d xmlbeans -s
look here for more details on that tool.
Besides stubs it will also generate all the objects you need.
Here is a tutorial using axis2 and Eclipse IDE.
I use intelliJ to generate the java code I need from a WSDL. You can then use this code to do SOAP calls.
Give it the WSDL and it will generate the code, some info can be found here:
http://www.jetbrains.com/idea/webhelp/generating-wsdl-document-from-java-code.html
Take a look at http://ws.apache.org/ where you will find Axis2 which is probably what you are looking for.
Note that web-services are more generic term than WSDL and have evolved since WSDL was introduced to the point that most services today speak JSON and alike. See more here RESTEasy or Jersey?
I have to access a existing SOAP webservice from an Android application. I have been provided some WSDL files describing the webservice. Reading some other answers here on SO, it seems ksoap2-android is the way to go, with respect to which SOAP client to use.
The next issue is then how to generate the Java classes needed from the WSDL files, and this is where I am coming up short. As far as I can see there are the following options:
AXIS2 code generator
WSDL2ksoap
JAX-WS wsimport tool
I initially tried #1, with the AXIS2 eclipse plugin for wsdl2code generator. The wizard did successfully generate a lot of Java code, however it also changed my android project to some kind of webservice project, and I was never able to get anything that was generated to compile, let alone work with ksoap2-android. Has anybody has success with this?
I am not able to run wsdl2ksoap successfully, as it seems to require a running webservice, and all I have at the current point in time is WSDL files. Likewise from reading the webpage, it seems to be a project in its initial stages, and not really ready for prime time.
JAX-WS wsimport I have not had a chance to try yet. However I am unsure if what it generates will work with ksoap2-android?
Question: How can I generate Java files from WSDL files, for use on Android with ksoap2-android SOAP client library?
Thanks a lot in advance.
(PS: Yes, the choice is SOAP, it is suboptimal for Android use, but I cannot change that.)
I found this tool to auto generate wsdl to android code,
http://www.wsdl2code.com/example.aspx
Here is the code:
public void callWebService() {
SampleService srv1 = new SampleService();
Request req = new Request();
req.companyId = "1";
req.userName = "userName";
req.password = "pas";
Response response = srv1.ServiceSample(req);
}
I had similar situation (I had only wsdl file without working webservice). I've used
http://easywsdl.com/
to generate classes for android without any problem. This tool uses ksoap library. The great thing with this tool is that it supports WCF extensions and types like data contract with IsReference attribute or Guid.
My conclusion after quite a bit of researching is that there is no such (mature) tool available, unfortunately. Neither AXIS2 or JAX-WS will work on Android, and WSDL2ksoap is simply too immature for any real use.
However there is a proprietary tool called wsclient++ that will do the job really well. (Read update below, when put to real use, it does not stand the distance at all.) It does not use the ksoap2-android client library, it has it's own.
The client library is a bit crude as it has a hard dependency on the http transport, making (unit) testing a bit complicated. But it can be modified quite easily to allow DI, as the source is available in the distributed jar file.
The wsdl to java generator however works just perfect, and will save us tons of time.
Update
After working with wsclient++ for a while, it is clear that the generated classes are really crude, and does not handle error cases at all. (Every method declares throws Exception).
We are no longer using wsclient++, and I would not recommend anyone to use it!
We have not really found any working alternative, unfortunately. :/
In the end we converted our WSDL files using AXIS2, and then wrote a bunch of custom script to strip and transform the generated java files to something that will build on android using ksoap2-android library. Very hackish, and needs tons of manual labor to run. Unfortunately. If you find a better way, or one comes up, please provide a new answer.
I use Apache CXF tool just to create dto, and i wrote a class to perform a basic unmarshalling based on name of elements
A bit late on this, but there is a ksoap2 stub generator under development, and I successfully used it to create the stubs.
http://ksoap2-stub-gen.sourceforge.net/
Also someone made it availabe as an online service (i.e. you give your WSDL's URL and the service will return a zip file containing the stubs).
http://www.davidgouveia.net/2011/04/online-stub-generator-for-android-applications-using-ksoap2/
I have used for iPhone too some auto-generated classes I wanted to see here too.
wsdl2code is one of the similar what I have used at iPhone. Give an url with wsdl file you will get some classes to download. For me the hardest part it was to download the required parts. It took more than 2 minutes of searching :) ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar needed to download ad drag-and-drop to ADT ( Eclipse) . It is super easy, especially if you have used the counterpart at iPhone. - a similar tool I have used.
However in my case I am not happy at all with the solution, because I see I am using cannon, a set of cannons to shot a sparrow. In my case it should be used a HTTP Post and not including dependencies from other libraries.
To be honest I don't care to much, because once the server side believe we have unlimited battery power and unlimited data plan, than I close my eyes and I don't care about marshaling-unmarshaling overheads, which use the CPU ( battery ) increase the data transmitted over network.
In worse case it should be a JSON + HTTP POST not SOAP for mobiles...
I would suggest to talk at server side guys and explain for they why it will not good if they do 2 click on wizards and we do other click on forms to get the generated code. At least while the application is not a huge one, even than should be budget to optimise for mobile a few interfaces implementations.
I have a service that was given to me, that basically searches the inventory of a future partner. The file they sent is a compiled .jar file, and a wsdl file. The read me file states that it can be used with XFire or CXF. How do I set this service up using Apache, Tomcat, Spring, or whatever else I need to do? It's a fairly broad question, but I am at a loss as to what to do here.
Your choices are as follows:
Hire a Java programmer, or
Become a Java programmer yourself.
In your shoes, I'd opt for #1. You probably have enough on your plate running your business to learn the ins and outs of coding.
Most likely the jar file you got is actually the generated java beans (jaxb) and stubs (jax ws and the likes). So you should be able to figure our an entry point class there and use that to call the webservice. But as others suggested very little information to really give an answer. JaxWS docs are here http://docs.oracle.com/javaee/5/tutorial/doc/bnayl.html
I haven't had any experience with web service related development. So, any ideas will be greatly appreciated.
Suppose, I have a file listing draft specification of WSDL operations. Following is one example. How would I go about creating the WSDL file. Is notepad sufficient or do I need to have WSDL editor?
getHostSystemInfo
Returns detailed information about host systems specified via given IDs.
input HostSystemIdCollection(Collection of Strings)
Output HostSystemInfoCollection
HostSystemInfo
Id: mandatory
Properties: Following properties should be provided for host systems
HostSystemName
HostSystemProperty1
HostSystemProperty2
HostSystemProperty3
....
....
If the question is just "how do I create the WSDL" then you could indeed use Notepad and just write it, it's only XML after all. However, writing syntactically correct XML by hand is pretty dull, and error prone. So I would recommend using WSDL aware tooling for example an Eclipse editor
An alternative is to write some Java which expresses the interface, and from it generate the WSDL. There are many ways of doing this, including starting with an EJB and annotating it accordingly. A few googles should help you find what you need.
My experience is that simple POC situations tend to work well starting at the Java. Larger scale projects benfit from considered designs starting at the WSDL.
coding WSDL by hand is a big pain! i used a XML editor for creation of and then generated the stubs with JAXWS. It is important to understand and differences of the WSDL styles, which is not trivial (have a look at WSDL styles). a good help is to import the WSDL schema to your IDE (eclipse, idea) and then work with autocompletion.
just for interest, why are you using WSDL + SOAP. if you have a choice and you use anyway HTTP, have a look at REST. It can make implementation of web-api a LOT easier, both on server side and for api-clients.
If you haven't done any web services before, I would strongly recommend a WSDL Editor. The Netbeans has a plugin that should help.
The other way of doing it, which may be easier is by using the Java annotations defined in JSR 181.
Of course you could use the worst text editor in the world (!) but I'd seriously consider using any decent XML editor or IDE (Eclipse's WSDL support is pretty decent). This will save you a lot of pain and suffer.
Or, if this is an option, you could just annotate a Java class with JAX-WS annotations and have your WSDL dynamically generated from the Java code. Personally, I prefer the WSDL-first approach, the Java-first approach is just a suggestion to get you started.
You could use Axis2 to create that for you.
I'm looking for a Java library for SWIFT messages. I want to
parse SWIFT messages into an object model
validate SWIFT messages (including SWIFT network validation rules)
build / change SWIFT messages by using an object model
Theoretically, I need to support all SWIFT message types. But at the moment I need MT103+, MT199, MT502, MT509, MT515 and MT535.
So far I've looked at two libraries
AnaSys Message Objects (link text)
Datamation SWIFT Message Suite (link text)
Both libraries allow to accomplish the tasks mentioned above but in both cases I'm not really happy.
AnaSys uses a internal XML representation for all SWIFT messages which you need to know in order to access the fields of a message. And you need to operate on the DOM of the XML representation, there is no way to say "get the contents of field '50K' of the SWIFT message".
And the Datamation library seems to have the nicer API but does not find all errors.
So does anyone know other SWIFT libraries to use?
Have you looked at WIFE? We use that in our application which translates SWIFT messages to an internal XML format and back again. We haven't had any problems with it. Also, it's licensed under the LGPL, so you can hack it up if you need to. Check it out.
SWIFT is releasing a "Standards Developer Kit" which includes an "MT/XML Schema Library".
From the doc:
"The MT/XML Schema Library is a complete set of XML schema definitions for MT messages, and software which shows how to convert messages from an MT format to an MT XML representation and back. This approach allows XML integration between applications while the MT (FIN) format will continue to be transported over the SWIFT network."
Java source code will also be made available, again from the doc:
"Working sample Java source code that converts a message in MT format to an XML instance and from an XML instance to a message in MT format."
See: http://www.swift.com/support/drc/develop/standards.page
This can be a great aid in dealing with FIN messages in XML syntax.
You can combine the open source implementation WIFE with the commercial validation component from http://www.prowidesoftware.com. It validates that the messages you create with the model or XML representation are good through SWIFT network validation rules.
There is a product call Volanté that make a great job. Their solution is certified by SWIFT and the integration is easy ( I sound like I'm working for them ... I'm not). I've been using it since a couple of month .
IBM is also offering a solution (cannot remember to name right now) but then you are committed to the big blue.
If your company is not comfortable with the LGPL license, You might want to check Progress Sonic ESB, or ArtixDS (recently acquired), TIBCO ActiveWhatever or Oracle/BEA Aqualogic. Chances are you are already using something from these companies and you can get decent discount.
Along with jodonnell, we also use WIFE. It works very well. I'm not sure if it does the network validation rules (#2 on your list) though.
paymentcomponents (http://www.paymentcomponents.com/) parser was easy to use and found all errors. Their site definitely needs work but if u look there, u'll find what u r looking for
I can not really help you out with a Java implementation. Microsoft of course, have their own Biztalk adapter for ISO15022 and 20022. And they will actually do the validation fairly well. But as you say you are actually looking for a java solution.
You might find, as I did when I researched this 6 years ago, that mapping FIN messages to XML and then to into objects, a standard library will only get you partly to your goal. You will have to integrate this with your backend application and whatever market practices you face in the particular messages you need to support.
I finally ended up writing a generic FIN parser /150022 class library in c++.
Anyway, good luck. An idea is to be more specific in your question. What types of messages do you need to support?
Datamation's libraries have evolved since then. If you need a corresponding solution in 2021, you can check FINaplo by PaymentComponents (formerly called Datamation), a multi-purpose implementation for financial messages.
It provides online validation/parse/translation/envelope services, Java SDKs, as well as REST solutions, all including error specifications. I am actually one of the authors.
A demo for a SWIFT MT Java library can be found in this GitHub link.