Archive for the ‘Web Services’ Category

JAX-RS 2.0 REST Client Features by Example

Monday, December 30th, 2013

JAX-RS 2.0 aka JSR 339 not also specifies the API to build up a RESTful webservice but also enhances the client side API to easen up the process of writing a client for a REST service.

In the following tutorial we’re building up a client for a ready-to-play REST service and explore the different new options e.g. how to handle requests in a synchronous or asynchronous way, how to add callback handlers for a request, how to specify invocation targets to build up requests for a later execution or how to filter the client-server communication using client request filters and client response filters.

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Using Apache Camel with Scala and the Camel Scala DSL

Wednesday, February 13th, 2013

Whenever I encounter a situation where I have to mix a blend of different services and endpoints and apply one or more of the traditional enterprise integration patterns then Apache Camel often is my weapon of choice.

I simply love how easy it is to set up some datasources, add some routing magic, data transformers, load balancers, content enrichers and enjoy the result.

Another thing that I’m beginning to love is Scala and so this is the perfect time to write an article about using Scala and Apache Camel together.

In the following tutorial we’re setting up our environment using SBT and Scala we’ll take a look at several interesting use cases for camel.

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Testing RESTful Web Services made easy using the REST-assured Framework

Sunday, October 23rd, 2011

REST-assured Integration Test Tutorial Logo There are many frameworks out there to facilitate testing RESTful webservices but there is one framework I’d like to acquaint you with my favourite framework named REST-assured.

REST-assured offers a bunch of nice features like a DSL-like syntax, XPath-Validation, Specification Reuse, easy file uploads and those features we’re going to explore in the following article.

With a few lines of code and Jersey I have written a RESTful web service that allows us to explore the features of the REST-assured framework and to run tests against this service.

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REST-assured vs Jersey-Test-Framework: Testing your RESTful Web-Services

Monday, September 5th, 2011

Today we’re going to take a look at two specific frameworks that enables you to efficiently test your REST-ful services: On the one side there is the framework REST-assured that offers a nice DSL-like syntax to create well readable tests – on the other side there is the Jersey-Test-Framework that offers a nice execution environment and is built upon the JAX-RS reference implementation, Jersey.

In the following tutorial we’re going to create a simple REST service first and then implement integration tests for this service using both frameworks.

The title of this article might be misleading due to the fact that I am not going to compare both frameworks to choose a winner, just showing the different approach ..

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Contract-First Web-Services using JAX-WS, JAX-B, Maven and Eclipse

Tuesday, August 23rd, 2011

Using the contract-first approach to define a web service offers some advantages in contrast to the code-first approach.

In the following tutorial we’re going to take a look at some details of this approach and we’re going to implement a real SOAP service using JAX-WS, Maven and the Eclipse IDE.

Finally we’re going to run our service implementation on an embedded Jetty instance and we’re going to take a look at soapUI and how to test our service using this neat tool.

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Creating a REST Client Step-by-Step using JAX-RS, JAX-B and Jersey

Thursday, November 25th, 2010

Often in a developer’s life there is a REST service to deal with and nowadays one wants a fast and clean solution to create a client for such a service.

The following tutorial shows a quick approach using JAX-RS with its reference implementation, Jersey in combination with JAX-B for annotation driven marshalling between XML or JSON structures and our Java-Beans.

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How to create a Confluence SOAP Component in 5 Minutes

Sunday, October 24th, 2010

You’re using the popular Confluence wiki? You’re using its RPC/SOAP API and missing a function you really need? Just extend the  capabilities of the Confluence RPC API by programming a custom web service component – it is really easy and also well documented.

In this tutorial we’re going to take a look on how to quickly implement a SOAP service, securing it and putting its methods in a transactional context.

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Creating a SOAP Service using JAX-WS Annotations

Thursday, September 23rd, 2010

It is possible to create SOAP webservices with only a few lines of code using the JAX-WS annotations. In a productivity environment you might prefer using contract-first instead of code-first to create your webservice but for now we’re going to use the fast method and that means code-first and annotations olé!

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Create a SOAP client using the JAX-WS Maven Plugin

Thursday, April 8th, 2010

Having written the article “How to build a Confluence SOAP client in 5 minutes” some readers asked me for some more information and help using the  JAX-WS plugin that I mentioned in the article instead of the Axis plugin – so here we go ;) (more…)

How to build a Confluence SOAP client in 5 minutes

Sunday, March 28th, 2010

In this tutorial we are going to build a SOAP client for the popular Confluence Wiki in about five minutes. The client is going to receive rendered HTML Markup from a specified Confluence Page.
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