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Java Web Services Developer Pack v1.3. Zhongnan Shen 12/04/2003. Outlines. What is WSDP? What ’ s in WSDP? An Example The Coffee Break Application Resources. What is WSDP.

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Java Web Services Developer Pack v1.3

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Java Web Services Developer Pack v1.3

Zhongnan Shen

12/04/2003


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Outlines

  • What is WSDP?

  • What’s in WSDP?

  • An Example

    The Coffee Break Application

  • Resources


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What is WSDP

  • A free integrated toolkit used to build and test XML applications, Web services, and Web applications with the latest Web service technologies and standards implementations ;

  • Supports WS-I Basic Profile 1.0;

  • Can be downloaded at http://java.sun.com/webservices/downloads/webservicespack.html

    size:26M; platform: windows, unix


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What’s in WSDP

  • Java Architecture for XML Binding (JAXB) v1.0.2;

  • Java API for XML Processing (JAXP) v1.2.4;

  • Java API for XML-based RPC (JAX-RPC) v1.1;

  • SOAP with Attachments API for Java (SAAJ) v1.2;

  • Java API for XML Registries (JAXR) v1.0.5;

  • JavaServer Faces (JSF) v1.0 EA4;

  • JavaServer Pages Standard Tag Library (JSTL) v1.1 EA;

  • XML and Web Services Security v1.0 EA2;

  • Java WSDP Registry Server v1.0_06;

  • Ant Build Tool 1.5.4;

  • Apache Tomcat v5 development container;

  • Ws-I Supply Chain Management Sample Application 1.0;


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What’s in WSDP

  • Java Architecture for XML Binding (JAXB)

    • Providing API and tools for automating the mapping between XML documents and Java objects;

    • Compiling an XML schema into one or more Java technology classes;

    • The following operations can be performed:

      • unmarshal XML content into a Java representation;

      • access, update and validate the Java representation against schema constraint;

      • marshal the Java representation of the XML content into XML content.


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What’s in WSDP

  • Java Architecture for XML Binding (JAXB)


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What’s in WSDP

  • Java API for XML Processing (JAXP)

    • supports processing of XML documents using DOM, SAX, and XSLT;

      • Document Object Model (DOM): an application programming interface for HTML and XML documents;

      • Simple API for XML (SAX): a common interface implemented for many different XML parsers;

      • XSL Transformations (XSLT): a language for transforming XML documents into other XML documents;

    • supports for XML schema and an XSLT compiler (XSLTC);


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What’s in WSDP

  • Java API for XML-Based RPC (JAX-RPC)

    • an API for building Web services and clients that use remote procedure calls (RPC) and XML ;

    • an easy-to-develop programming model for development of SOAP based web services, including web service clients and endpoints;

      • developers are not exposed to the complexity of SOAP protocol level mechanisms;

    • support for WSDL->Java and Java->WSDL mapping;

    • support for SOAP message processing model;

    • support for document based messaging;

    • support HTTP level session management and SSL based security mechanisms.


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What’s in WSDP

  • Java API for XML-Based RPC (JAX-RPC)


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What’s in WSDP

  • SOAP with Attachments API for Java (SAAJ)

    • enables developers to produce and consume messages conforming to the SOAP 1.1 specification and SOAP with Attachments note;

    • derived from the package originally defined in the JAXM 1.0 specification;

    • SOAP messages can contain both XML contents and non-XML contents (as attachments);

    • Messages sent using the SAAJ API are called request-response messages;


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What’s in WSDP

  • SOAP with Attachments API for Java (SAAJ)


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What’s in WSDP

  • Java API for XML Registries (JAXR)

    • provides a uniform and standard Java API for accessing different kinds of XML Registries;

      • ebXML Registry and Repository standard;

      • Universal Description, Discovery, and Integration (UDDI);

    • JAXR enables Java software programmers to use a single, easy-to-use abstraction API to access a variety of XML registries. A unified JAXR information model describes content and metadata within XML registries;


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What’s in WSDP

  • Java API for XML Registries (JAXR)


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What’s in WSDP

  • JavaServer Faces Technologies

    • a server-side user interface framework for Java technology-based Web applications ;

    • Main components include:

      • A set of APIs for:

        representing UI components and managing their state;

        handling events and input validation;

        defining page navigation;

        supporting internationalization and accessibility .

      • A JavaServer Pages (JSP) custom tag library for expressing UI components within a JSP page.


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What’s in WSDP

  • JavaServer Faces Technologies


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What’s in WSDP

  • JavaServer Pages Standard Tag Library (JSTL)

    • encapsulates core functionality common to many JSP applications;

      <c:forEach var="item" items="${sessionScope.cart.items}">

      ...

      <tr>

      <td align="right" bgcolor="#ffffff">

      ${item.quantity}

      </td>

      ...

      </c:forEach>


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What’s in WSDP

  • JavaServer Pages Standard Tag Library (JSTL)


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What’s in WSDP

  • XML and Web Services Security

    • Transport-Level Security

      security is addressed by the transport layer.

      • Basic Authentication with JAX-RPC;

      • Client-Certificate Authentication over HTTP/SSL with JAX-RPC;

    • Message-Level Security

      security information is contained within the SOAP message.


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What’s in WSDP

  • Java WSDP Registry Server

    • The Java Web Services Developer Pack (Java WSDP) Registry Server implements Version 2 of UDDI;

    • provide a UDDI registry for Web services in a private environment;

    • use it with the Java WSDP APIs as a test registry for Web services application development.


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An Example

  • The Coffee Break server obtains the

  • coffee varieties and their prices by

  • querying distributors at startup and

  • on demand.

  • The Coffee Break server uses SAAJ messaging to communicate with one of its distributors.

  • The Coffee Break server uses JAXR to send a query searching for coffee distributors that support JAX-RPC to the Registry Server.

  • The Coffee Break server requests price lists from each of the coffee distributors.

  • The Coffee Break server forwards

  • suborders to each distributor to get

  • confirmations.

  • Coffee Break Application


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An Example-Coffee Break

  • JAX-RPC Distributor Service

    • Service side

      • Service Interface

        public interface SupplierIF extends Remote {

        public ConfirmationBean placeOrder(OrderBean order)

        throws RemoteException;

        public PriceListBean getPriceList() throws RemoteException;

        }

      • Publishing the Service in the Registry

        JAXRPublisher publisher = new JAXRPublisher();

        publisher.makeConnection(queryURL, publishURL);

        String key = publisher.executePublish(username, password, endpoint);


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An Example-Coffee Break

  • JAX-RPC Distributor Service

    • Client side

      • Building the Static Stub Client;

        Clients makes remote call through a stub, a local object which acts as a proxy for the remote service.

        wscompile -gen:client -d build -classpath build config-wsdl.xml

        -gen:client flag instructs wscompile to generate the stubs;

        -d: flag tells the tool to write the output to the build subdirectory;

        config-wsdl.xml file: specifies the location of the WSDL file;

      • Invoking the remote method

        PriceListBean priceList = PriceFetcher.getPriceList(distributor);


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An Example-Coffee Break

  • SAAJ Distributor Service

    • SAAJ Service

      • Returning the Price List

        public void doPost(HttpServletRequest req, HttpServletResponse resp)

        {

        …Analyze the request…

        …Compose the message…

        OutputStream os = resp.getOutputStream();

        reply.writeTo(os);

        os.flush();

        }

      • Returning the Order Confirmation


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An Example-Coffee Break

  • SAAJ Distributor Service

    • SAAJ Client

      SOAPConnectionFactory scf = SOAPConnectionFactory.newInstance(); SOAPConnection con = scf.createConnection();

      ……

      Compose the request

      ……

      SOAPMessage response = con.call(request, endpoint);


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An Example-Coffee Break

  • Coffee Break Server

    The Coffee Break Server uses servlets, JSP pages, and JavaBeans components to dynamically construct HTML pages for consumption by a Web browser client.

    • RetailPriceListServlet & RetailPriceList

      • The RetailPriceListServlet responds to requests to reload the price list;

      • Component RetailPriceList

        • Discovering the JAX-RPC Service

          JAXRQueryByName jq = new JAXRQueryByName(); connection = jq.makeConnection(queryURL, publishURL); jq.executeQuery(queryString);

        • Query JAX-RPC service and SAAJ service

    • CheckoutFormBean

      submits suborders to each distributor


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Resources

  • Java Web Services Developer Pack 1.3

    dowload:

    http://java.sun.com/webservices/downloads/webservicespack.html

    Tutorial:

    http://java.sun.com/webservices/docs/1.3/tutorial/doc/index.html

    Sample Applications:

    http://java.sun.com/webservices/docs/1.3/wsi-sampleapp/index.html


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Thanks for Listening


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