I am currently looking at redeveloping a web service that is currently written in.net. I would like to port it across to java using a cxf, spring, hibernate and maven stack. The wsdl for the service is already available and is well formed so i would like to reuse rather than redeveloping the interface. This will also mean that the clients will not require significant changes in order to use the new service. I would like to use a jax ws type approach to developing the web service, similar to the java first approach at has anyone attempted this before? are there any good guides online that i can refer to? apache cxf is an open source services framework. Cxf helps you build and develop services using frontend programming apis, like jax ws and jax rs. These services can speak a variety of protocols such as soap, xml/http, restful http, or corba and work over a variety of transports such as http, jms or jbi.

The apache cxf team is proud to announce the availability of the latest patch releases. Over 50 jira issues were fixed for 3.1.5 which many of those fixes back ported to 3.0.8. This is mostly a patch release to fix problems and issues that users have encountered.

Over 60 jira issues were fixed for 3.1.4 which many of those fixes back ported to 3.0.7 and 2.7.18. Cxf includes a broad feature set, but it is primarily focused on the following areas: web services standards support: cxf supports a variety of web service standards including soap, the ws i basic profile, wsdl, ws addressing, ws policy, ws reliablemessaging, ws security, ws securitypolicy, ws secureconverstation, and ws trust partial. frontends: cxf supports a variety of frontend programming models. Cxf jax ws support includes some extensions to the standard that make it significantly easier to use, compared to the reference implementation: it will automatically generate code for request and response bean classes, and does not require a wsdl for simple cases. It also includes a simple frontend which allows creation of clients and endpoints without annotations. Cxf supports both contract first development with wsdl and code first development starting from java.

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There are simple apis to quickly build code first services, maven plug ins to make tooling integration easy, jax ws api support, spring 2.x xml support to make configuration a snap, and much more. binary and legacy protocol support: cxf has been designed to provide a pluggable architecture that supports not only xml but also non xml type bindings, such as json and corba, in combination with any type of transport. Or the mailing lists to get more information! high performance extensible intuitive amp easy to use the name of the sei service endpoint interface class. If the wsdlurl option is provided, serviceclass is not required for payload and message mode. When wsdlurl option is used without serviceclass, the servicename and portname endpointname for spring configuration options must be provided. It is possible to use notation to reference a serviceclass object instance from the registry.

The serviceclass for a cxf producer that is, the to endpoint should be a java interface. since 2.8, it is possible to omit both wsdlurl and serviceclass options for payload and message mode. When they are omitted, arbitrary xml elements can be put in cxfpayload's body in payload mode to facilitate cxf dispatch mode. Please be advised that the referenced object cannot be a proxy spring aop proxy is ok as it relies on object.getclass .getname method for non spring aop proxy.

You'll learn how to: set up your build for cxf writing a simple jax ws service set up the http transport this example corresponds to the spring_http example in the cxf distribution. It will have one operation called sayhello which says hello to whoever submits their name. The @webservice annotation on the implementation class lets cxf know which interface to use when creating wsdl.

In this tutorial i explain how to get a web service up and running using spring 2.5 and apache cxf 2.0, which is the combination of celtix and xfire and is considered xfire 2.0. I don rsquo t know what the celtix team would say about that, but that rsquo s what the xfire site says. Here i just treat the web service itself to learn about consuming the web service using spring and cxf, please see the article make web services transparent with spring 2.5 and apache cxf 2.0. The first thing you rsquo ll need to do is download cxf from the apache cxf site.

At the time of this writing the project is in incubator status and the latest version is 2.0.4. You rsquo ll also find it useful to know about the section of the cxf user documentation that deals with writing a service with spring. But currently the docs describe how to integrate with spring 2.0, and since i want to integrate with spring 2.5, there are some differences worth highlighting along the way. Also, the docs describe a ldquo hello, world rdquo web service that just returns a string, and in this tutorial we want to go a little further than that and actually do a class databinding. Inside the distribution there is a file called which_jars that describes in a little more detail what the jars are for and which ones you rsquo ll really need, if you rsquo re interested in that. Note that for cxf 2.0.4 the documented dependencies are almost but not quite the same as the jars that are actually included in the distribution, once again, at the time of this writing february 2008. In this case ignore what rsquo s in the cxf documentation, because we rsquo re integrating with spring 2.5 instead of spring 2.0.

I rsquo m going to assume that you have spring 2.5 already set up on your web services project, including hibernate or anything else that your web services will need on the implementation side. Just in case you were wondering, you don rsquo t need the spring mvc module rsquo s dispatcherservlet as cxf comes with its own servlet, org.apache.cxf.transport.servlet.cxfservlet. Let rsquo s go basic but realistic and implement a ldquo contact us rdquo web service.

The idea is that lots of different applications and/or web sites need to have a web based form to allow end users to contact an admin team business, tech support, development, whatever responsible for monitoring such communications. We rsquo ll implement a web service so that multiple applications can share it easily. There will be two operations: view the list of submitted messages: this allows the admin team to see what the end users are saying. post a message: this allows end users to ask a question, tell us how great we are, demand their money back, etc. As we want to explore more than the barest ldquo hello, world rdquo functionality, let rsquo s create a message class that we can pass to the service and that we can get from the service. Here rsquo s the message class: in real life i might have a bunch of hibernate annotations in there i rsquo m a fan of annotation based configuration , and i would create a dao.

If you look carefully, however, you can see that i did in fact include an annotation. The @ignoreproperty annotation is part of the aegis databinding mechanism, which comes with cxf but is not the default. I ended up using aegis instead of jaxb because jaxb was giving me trouble when i tried to return complex data types like message from a web service. Maybe it works and maybe it doesn rsquo t mdash i don rsquo t know mdash but when i plugged aegis in it worked immediately and now i intend to use aegis. Anyway, @ignoreproperty tells aegis that i don rsquo t want getlastnamefirstname to show up in the auto generated wsdl. The first indicates that the interface defines a web service interface we rsquo ll use it to autogenerate a wsdl and the second allows us to use an http parameter called ldquo message rdquo to reference the operation rsquo s argument instead of having to call it ldquo arg0 rdquo , which is the default.

create the service implementation

here the @webservice annotation is marking this class as a web service implementation, and also specifying that the wsdl should be generated using the contactusservice interface.

The main thing worth mentioning is that we rsquo re using the cxfservlet to process all requests, which we rsquo re assuming are all requests for web services. As you might guess from the web.xml file above, we need to create a spring application context file called appcontext.xml. I don rsquo t know the details and i don rsquo t think we rsquo re supposed to care about the details. If you run this in a production environment you probably want to turn that off because it rsquo s verbose. The service bean definition is just telling spring about the service bean we wrote. The next piece on aegis specifies the databinding mechanism we want to use for mapping back and forth between java and xml.

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I mentioned earlier that i tried using the default jaxb but was having problems getting it to work, so someone recommended to me to try aegis and that worked like a charm. We use the jax ws/aegis service factory that we defined earlier so we can use the aegis databinding. To make cxf play nicely with aop and hence spring rsquo s declarative transactions you are going to need to include the implementorclass attribute as i rsquo ve done. For more details on that see the cxf faqs at

a validation annoyance in eclipse

though it in no way reflects a fault with eclipse itself, if you are using eclipse 3.3 you may be getting some annoying validation errors in the ide, such as ldquo cvc complex type.2.4.c: the matching wildcard is strict, but no declaration can be found for element lsquo jaxws:endpoint rsquo. Rdquo this is because the schema locations for the you can map the you can turn off xml validation. That seems pretty drastic but its an option and in fact its what ive myself done.