Veebiteenused Java platvormil

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Veebiteenused Java platvormil

• Tauno Treier

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Sisukord

• Java arendusvahendid
• XML töötlus Javas
• Java EE veebiteenuste tehnoloogiad
• Näide NetBeans 5.5 ja Glassfish rakendusserveriga

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Arendusvahendid

• Kommertsiaalsed arendusvahendid
• IBM Websphere
• Sun Microsystems
• Oracle
• BEA Weblogic
• webMethods
• SAP NetWeaver
• Intelli J IDEA

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Arendusvahendid

• Vabavara arendusvahendid
• Apache Axis, Axis2
• JAX-WS RI
• Eclipse
• NetBeans

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XML töötlus Javas

• DOM1 parsimine
• Push parsimine SAX
• Pull parsimine StAX, Apache AXIOM

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Java EE tehnoloogiad

• Java API for XML-Based Web Services (JAX-WS)
• Java Architecture for XML Binding (JAXB)
• SOAP with Attachments API for Java (SAAJ)

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JAX-WS

• Kommunikatsioon JAX-WS veebiteenuse ja kliendi
  vahel

• Genereerimise vahendid
• wsgen
• wsimport

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JAX-WS

• A service endpoint interface or service endpoint
  implementation (SEI) is a Java interface or
  class, respectively, that declares the methods
  that a client can invoke on the service. An
  interface is not required when building a JAX-WS
  endpoint. The web service implementation class
  implicitly defines an SEI.

Endpointi näide package helloservice.endpoint
import javax.jws.WebService _at_WebService
public class Hello private String
message new String("Hello, ") public
void Hello() _at_WebMethod public
String sayHello(String name) return
message name "."
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JAX-WS

• Stubi (tüügas) kasutamine

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JAXB

• JAXB arhitektuur

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JAXB

• JAXB pakett koosneb järgnevast
• A Java class name that is derived from the XML
  element name, or specified by a binding
  customization.
• An ObjectFactory class, which is a factory that
  is used to return instances of a bound Java
  class.

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Näide

• NetBeans 5.5
• Glassfish Application Server