Developing Java Web Services. Duration: 5 days

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Vernon Powers
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1 QWERTYUIOP{ Develping Java Web Services Duratin: 5 days The Develping Java Web Services training class prepares Java prgrammers t develp interperable Java Web services and using SOAP, WSDL, and XML Schema. Students get an verview f the interperable and Java-specific Web services architectures, and then learn the standard APIs fr SOAP messaging and WSDL-driven, cmpnent-based service develpment. Bth dcument-style and RPC-style messages and services are cvered in depth. The intrductry chapters give verviews f the cnsensus architecture fr interperable Web services, including the WS-I Basic Prfile, and the Java Web services architecture as cdified by the J2EE 1.4 specificatin, including SAAJ and JAX-RPC. These chapters are meant t be equally useful t develpers and nn-develpers prject managers, analysts, technlgists and supprt staff. There is a great deal f hands-n demnstratin f running Web services, inspecting SOAP traffic, WSDL definitins, and a little bit f Java cde, but n Java cding. The fcus is n the architecture itself, and n the rles that varius prtcls, APIs, tls, and applicatin cmpnents play in a wrking Web service and/r client. The curse then gets dwn t the varius brass tacks: students learn the Simple Object Access Prtcl (SOAP) 1.1, and acquire skills in using the SOAP with Attachments API fr Java (SAAJ) and the Java API fr XML Messaging (JAXM) t build "lw-level" SOAP- based Web services and clients, in which the prgrammer is respnsible fr element-by- element cntent f the SOAP message. Students will learn t read SOAP and t write it by hand, and then will prceed t use the Java APIs t develp servlets that respnd t SOAP/HTTP messages. The curse then mves t "high-level" services: cmpnent-based develpment using the Web Services Descriptin Language (WSDL) t define interperable messaging mdels and the Java API fr XML-Based RPC (JAX-RPC) t autmate the SOAP messaging fr remte prcedure calls between bjects. JAX-RPC abstracts almst all the transprt-level implementatin SOAP ver HTTP and this allws the Java develper t cncentrate n applicatin and service specifics. (In this way JAX-RPC is analgus t Java RMI and the EJB architecture: SOAP/HTTP is treated as nthing mre r less than an RPC transprt prtcl.) Students get hands-n experience in develping Web services starting either frm WSDL descriptrs r frm existing J2EE applicatins. Bth servlet and EJB endpint mdels are studied, as is the management f SOAP headers using JAX-RPC handler chains. Finally, the curse cvers advanced techniques including SOAP attachments (using either SAAJ r JAX-RPC), EJBs and JSPs as Web services and clients, and Java Web-service security. Java Web Services Training Learning Objectives Describe the mtivatin fr develping and using Web services in business sftware. Describe the Web services architecture. Describe cmmn scenaris fr Web-service implementatin and client-side use. Describe the Java Web services architecture and the requirements f J2EE 1.4. Understand the imprtance f SOAP t the Web services architecture.

2 Read, understand and write SOAP messages. Understand the rle f JAXM and SAAJ in building lw-level Java Web services. Build a Java Web service as a JAXM/SAAJ servlet. Implement simple pint-t-pint SOAP cmmunicatins frm a client applicatin. Mix and match SAAJ, SAX and DOM cde in a Web-service implementatin. Understand the rle f WSDL in prviding type infrmatin fr Web services. Write WSDL dcuments t describe messages, interfaces and services. Understand the rle f the JAX-RPC in the Java Web services architecture. Identify the alternatives fr develpment paths thrugh Java cde and WSDL artifacts n server and client sides, and describe the advantages f each. Understand the standard mappings between WSDL, XML Schema and Java. Analyze Java dmain mdels and identify the useful JAX-RPC types. Add a SOAP interface t an existing Java Web applicatin by generating SOAP messaging cde using JAX-RPC tls. Build a Java Web service based n an existing WSDL dcument. Build a Java Web-service client based n a WSDL dcument. Describe the relatinship between the EJB 2.1 and JAX-RPC 1.0 specificatins, and hw EJBs can implement Web-service endpints. Add a SOAP interface t an existing system f EJBs, and build an EJB implementatin f a Web service based n a predefined WSDL descriptr. Implement a simple Web service using JSP and JSTL XML tags. Implement a JSP Web-service client using custm tags that wrap JAXM. Understand the lifecycle and cntext f JAX-RPC services as J2EE cmpnents. Describe the use f the JAX-RPC message cntext in managing SOAP headers. Implement a JAX-RPC message handler t adapt an existing Web service. Implement a sessin-aware JAX-RPC Web service that relies n HTTP sessins based n ckies. Create, send, receive, and read SOAP attachments using SAAJ r JAX-RPC. Describe the varius techniques fr securing Java Web services available frm J2EE and varius XML specificatins. Java Web Services Training Prerequisites Slid experience in Java Prgramming, including bject-riented Java and the Java streams mdel, is essential t learning t build Java Web services. Sme experience with J2EE develpment, especially Web applicatins using servlets, will be very helpful, but is nt strictly required. Sme understanding f XML and XML Schema is strngly recmmended. Varius related technlgy is discussed in the curse: JAXP, SAX, DOM, XSLT, XPath, JSP and JSTL. Nne f these is a frmal prerequisite fr the curse, and labs are built t allw students withut experience in these things t wrk thrugh successfully. Java Web Services Training Outline 1. Interperable Web Services Mtivatin fr Web Services Evlutin f Web Services HTTP and XML Interperability Stacks Simple Object Access Prtcl (SOAP) Web Service Descriptin Language (WSDL) Universal Descriptin, Discvery and Integratin (UDDI)

3 The WS-I Basic Prfile REST 2. Building and Hsting Web Services Hsting Web Services: Scenaris SOAP Alne Service Descriptin Building Services and Clients frm WSDL Publishing and Discvery Practical Requirements The J2EE Reference Implementatin Demnstratin: A Running Web Service and Client Sniffing SOAP Messages Develpment Prcess 3. The Java Web Services Architecture Web Services and the J2EE The Java API fr XML Prcessing (JAXP) The Java API fr XML Binding (JAXB) The SOAP With Attachments API fr Java (SAAJ) The Java API fr XML Messaging (JAXM) Demnstratin: A SOAP-Based Web Service Using JAXM and SAAJ The Java API fr XML-Based RPC (JAX-RPC) Demnstratin: A WSDL-Enabled Web Service Using JAX-RPC WSDL-t-Java vs. Java-t-WSDL The Java API fr XML Registries (JAXR) 4. The Simple Object Access Prtcl (SOAP) SOAP Messaging Mdel SOAP Namespaces SOAP ver HTTP The SOAP Envelpe The Message Header The Message Bdy SOAP Faults Attachments XML Schema Validating Message Cntent SOAP Encding 5. The Java APIs fr SOAP Messaging (SAAJ) The SAAJ Object Mdel Parsing a SOAP Message Reading Message Cntent Wrking with Namespaces Creating a Message Setting Message Cntent Integratin with the DOM and JAXP 6. The Java API fr XML Messaging (JAXM) Building Lw-Level Web Services Messaging Scenaris Pint-t-Pint Messaging JAXM Message Prviders JAXM Servlets Creating a SOAP Cnnectin Sending a Message

4 7. Web Services Descriptin Language (WSDL) Web Services as Cmpnent-Based Sftware The Need fr an IDL Web Services Descriptin Language WSDL Infrmatin Mdel The Abstract Mdel - Service Semantics Message Descriptin Messaging Styles The Cncrete Mdel - Prts, Services, Lcatins Extending WSDL - Bindings Service Descriptin 8. The Java API fr XML-Based RPC (JAX-RPC) The Java Web Services Architecture Tw Paths Hw It Wrks - Build Time and Runtime The Web Services fr J2EE Specificatin JAX-RPC Deplyment Mapping Between WSDL/XML and Java Generating frm WSDL Generating frm Java 9. Generating Web Services frm Java Cde The Java-t-XML Mapping Primitive Types and Standard Classes Value Types and JavaBeans The Java-t-WSDL Mapping Simple and Cmplex Types Arrays and Enumeratins Service Endpint Interface Scpe f Cde Generatin Inheritance Supprt Multi-Tier Applicatin Design Analyzing the Dmain When Things Dn't Fit 10. Generating Java Web Services frm WSDL The XML-t-Java Mapping Simple and Cmplex Types Enumeratins Arrays Miscellaneus, Optinally-Supprted Cnstructs The WSDL-t-Java Mapping Mapping Operatin Inputs and Outputs Building a Service Client Lcating a Service Client-Side Validatin Creating a Web Service Deplying the Service 11. Best Practices and Techniques Which Way t G? Interperability Impact Cntrlling Names and URIs Plymrphism in JAX-RPC The Dynamic Invcatin Interface

5 Extensible Type Mapping Passing Objects Perfrmance Patterns Anther CORBA? 12. EJB, JSP and Web Services Enterprise JavaBeans Three Tiers fr J2EE EJB 2.1 and JAX-RPC Sessin Beans as Web Service Endpints The Bean's Service Endpint Interface SOAP as an RMI Transprt Adding a SOAP Interface t a Sessin Bean Generating Frm WSDL "Gtchas" JSP and XML The JSTL: Cre and XML Actins JSP, JSTL and SOAP Reading SOAP Using XPath Perfrming XSLT Transfrmatins JSPs as Web-Service Clients Custm Tags fr SAAJ and JAXM 13. Service Lifecycle and Message Handlers Web Services as J2EE Cmpnents Service Lifecycle Cmpnent Envirnment and JNDI Handling SOAP Headers Servlet Endpint Cntext EJB Endpint Cntext MessageCntext and SOAPMessageCntext Message Handlers and Handler Chains Prcessing Mdel and Patterns Sessin Management in JAX-RPC 14. SOAP Attachments SAAJ Object Mdel, Revisited The SOAPMessage Class MIME The Java Activatin Framewrk The MimeHeaders Class The AttachmentPart Class Adding SOAP Attachments Identifying Attachments Reading Attachments JAX-RPC and Attachments Generic Mapping fr MIME Types Using Images and Binary Types in Interfaces and Structs 15. Security Web Services and Security Threats Technlgy and Techniques Public Key Encryptin Digital Signature J2EE Techniques

6 Securing Web-Service URIs HTTPS XML and SOAP Slutins XML Encryptin and Signature WS-Security SAML XACML

Varargs Training & Software Development Centre Private Limited, Web Component Development using Servlets and JSP

Varargs Training & Software Development Centre Private Limited, Web Component Development using Servlets and JSP Advance Java Curriculum Web Cmpnent Develpment using Servlets and JSP INTRODUCTION TO J2EE & WEB APPLICATION What is web applicatin Intrductin with URL, Query String Web Server, Client & Server side script