Preparing for SCDJWS Part 18: XML Digital Signature and XML Encryption

Today I will talk about XML Digital Signature and XML Encryption.

These two are heavily used in Web Services' message level security.

I will show you how to sign and verify XML documents using core (and verbose) Java XML Security API.

Also, I will show you how to sign and verify XML documents and encrypt them using Apache Santuario project.

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Preparing for SCDJWS Part 17: Web Services transport level security

Section 8 of SCDJWS exam objectives is dedicated to Web Services security.

Today I will talk about transport level security such as basic and mutual authentication, and SSL.

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Preparing for SCDJWS part 16: Java EE Web Services and XML standards

Section 7 of SCDJWS exam objectives is dedicated to Java EE Web Services and various XML and WS standards.

Today's post is just a set of external links. Section 7 requires a general knowledge of Java EE and XML and WS standards, so no point in copying-and-pasting contents of Sun's documentation or Wiki articles.

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Preparing for SCDJWS Part 15: JAXR and Web Services Registries

Section 6 of SCDJWS, which today I'm going to cover, is entirely dedicated to JAXR.

To find out more about JAXR itself please see: http://java.sun.com/developer/technicalArticles/WebServices/jaxrws/.

To get you started with JAXR development all you have to do is get yourself familiar with 3 tables from the above article:

• Table 1: Mapping of high-level UDDI data structures to JAXR interfaces
• Table 2: Mapping of UDDI Publisher API to JAXR
• Table 3: Mapping of UDDI Inquiry API to JAXR

Also, a really nice IBM presentation about JAXR can be found here: http://publib.boulder.ibm.com/infocenter/ieduasst/v1r1m0/index.jsp?topic=/com.ibm.iea.was_v6/was/6.0/WebServices/WASv6_JAXR/player.html.

And you're ready to start with JAXR. So here we go.

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Preparing for SCDJWS Part 14: Web Services and attachments

Last point of Section 2 of SCDJWS exam objectives says:

Describe SOAP Message Construct and create a SOAP message that contains an attachment

and the last point of Section 5 says:

Create and use a SOAP message with attachments using the SAAJ APIs

I have already showed you how to create SOAP message with attachments using low level SAAJ API: Preparing for SCDJWS Part 4: Creating SOAP Messages that contain attachments. Today I will rehearse it one more time plus I will show you how to create and consume attachments using JAX-WS API.

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Preparing for SCDJWS Part 13: REST, JSON, JAX-RS (and CXF)

The first four points of Section 5 of SCDJWS exam objectives talk about REST, JSON, and SOAP Web Services.

As I have been writing about SOAP Web Services ever since I started my blog I will focus only on RESTful Web Services in this post.

First time I wrote about JAX-RS was 8 months ago: Developing RESTful Web Services using Apache CXF and Maven2.

I used Apache CXF 2.1 and JAX-RS 0.8. Today JAX-RS is final 1.0 and Apache CXF 2.2 supports it fully.

Also, Apache CXF 2.2 added support for WADL (something like a WSDL, but for RESTful Web Services).

So, here we go.

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Preparing for SCDJWS Part 12: JAX-WS Advanced clients

Today I will give you examples of Java EE clients and clients of Stateful Web Services.

Let's get to work then.

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Google Closure Compiler and Groovy client

As you can read on Google Closure Library home page: http://code.google.com/intl/pl/closure/library/, Google Closure is a broad, well-tested, modular, and cross-browser JavaScript library.

A very interesting part of Closure Library is the Closure Compiler...

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Preparing for SCDJWS part 11: JAX-WS Communications Models

Today I will write about point 4.8 JAX-WS Communications Models from the SCDJWS exam objectives.

To cut long story short, JAX-WS supports the following three communications models:

• synchronous
• asynchronous (in two versions, with or without AsyncHandler)
• one way

When preparing to this post I noticed that all my JAX-WS examples in my blog use high-level (POJO) Web Service producers and consumers. In today's examples I will use low-level Dispatcher and Provider classes.

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New Year's resolutions

As usually everyone is making resolutions for the New Year.

Here are my IT resolutions:

• reply to comments on my blog onboard :)
• learn Groovy in depth
• don't refrain from integration tests
• finish writing PhD system (currently version 0.5, 0.6 will probably be 1.0)
• start writing PhD thesis!

I hope that at the end of 2010 I put a tick next to each resolution.

All the best in 2010!

Take care,
Łukasz

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