A web service is a piece of business logic, located somewhere on the Internet, that is accessible through standard-based Internet protocols such as HTTP or SMTP. Using a web service could be as simple as logging into a site or as complex as facilitating a multiorganization business negotiation.

Contents
Preface
Who Should Read This Book?
Organization Software and Versions Conventions
Comments and Questions
Acknowledgments
1. Welcome to Web Services

1.1 What Are Web Services?
1.2 Web Services Adoption Factors
1.3 Web Services in a J2EE Environment
1.4 What This Book Discusses

2. Inside the Composite Computing Model

2.1 Service-Oriented Architecture
2.2 The P2P Model

3.1 Simple
3.2 Object
3.3 Access
3.4 Protocol
3.5 Anatomy of a SOAP Message
3.6 Sending and Receiving SOAP Messages
3.7 The Apache SOAP Routing Service
3.8 SOAP with Attachments

4. SOAP-RPC, SOAP-Faults, and Misunderstandings

4.1 SOAP-RPC
4.2 Error Handling with SOAP Faults
4.3 SOAP Intermediaries and Actors

5. Web Services Description Language

5.1 Introduction to WSDL
5.2 Anatomy of a WSDL Document
5.3 Best Practices, Makes Perfect
5.4 Where Is All the Java?

6. UDDI: Universal Description, Discovery, and Integration

6.1 UDDI Overview
6.2 UDDI Specifications and Java-Based APIs
6.3 Programming UDDI
6.4 Using WSDL Definitions with UDDI

7. JAX-RPC and JAXM

7.1 Java API for XML Messaging (JAXM)
7.2 JAX-RPC
7.3 SOAPElement API
7.4 JAX-RPC Client Invocation Models

8. J2EE and Web Services

8.1 The SOAP-J2EE Way
8.2 The Java Web Service (JWS) Standard

9. Web Services Interoperability

9.1 The Concept of Interoperability
9.2 The Good, Bad, and Ugly of Interoperability
9.3 Potential Interoperability Issues
9.4 SOAPBuilders Interoperability
9.5 Other Interoperability Resources
9.6 Resources

10. Web Services Security

10.1 Incorporating Security Within XML
10.2 XML Digital Signatures
10.3 XML Encryption
10.4 SOAP Security Extensions
10.5 Further Reading

A. Credits
Colophon

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