Download E-books Java Web Services: Up and Running PDF

Learn the best way to increase REST-style and SOAP-based internet prone and consumers with this quickly and thorough advent. This hands-on e-book gives you a transparent, pragmatic method of internet prone by way of delivering an architectural evaluation, entire operating code examples, and brief but particular directions for compiling, deploying, and executing them. You’ll easy methods to write providers from scratch and combine current companies into your Java applications.

With better emphasis on REST-style prone, this moment variation covers HttpServlet, Restlet, and JAX-RS APIs; jQuery consumers opposed to REST-style prone; and JAX-WS for SOAP-based prone. Code samples contain an Apache Ant script that compiles, applications, and deploys internet services.

  • Learn modifications and similarities among REST-style and SOAP-based services
  • Program and convey RESTful internet companies, utilizing Java APIs and implementations
  • Explore RESTful internet provider consumers written in Java, JavaScript, and Perl
  • Write SOAP-based net prone with an emphasis at the program level
  • Examine the handler and shipping degrees in SOAP-based messaging
  • Learn wire-level safety in HTTP(S), users/roles protection, and WS-Security
  • Use a Java program Server (JAS) as a substitute to a standalone internet server

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Namespace. QName; import javax. xml. cleaning soap. SOAPBody; import javax. xml. cleaning soap. SOAPMessage; import javax. xml. ws. handler. Handler; import javax. xml. ws. handler. HandlerResolver; import javax. xml. ws. handler. MessageContext; import javax. xml. ws. handler. PortInfo; import javax. xml. ws. handler. cleaning soap. SOAPHandler; import javax. xml. ws. handler. cleaning soap. SOAPMessageContext; import org. apache. commons. codec. binary. Base64; import org. w3c. dom. point; import org. w3c. dom. Node; public category AwsHandlerResolver implements HandlerResolver { inner most String awsSecretKey; public AwsHandlerResolver(String awsSecretKey) { this. awsSecretKey = awsSecretKey; } public List getHandlerChain(PortInfo portInfo) { List handlerChain = new ArrayList(); QName serviceQName = portInfo. getServiceName(); if(serviceQName. getLocalPart(). equals("AWSECommerceService")) { handlerChain. add(new AwsSoapHandler(awsSecretKey)); } go back handlerChain; } } category AwsSoapHandler implements SOAPHandler { inner most byte[ ] secretBytes; public AwsSoapHandler(String awsSecretKey) { secretBytes = getBytes(awsSecretKey); } public void close(MessageContext mCtx) { } public Set getHeaders() { go back null; } public boolean handleFault(SOAPMessageContext mCtx) { go back real; } public boolean handleMessage(SOAPMessageContext mCtx) { Boolean outbound = (Boolean) mCtx. get(MessageContext. MESSAGE_OUTBOUND_PROPERTY); if (outbound) { try out { SOAPMessage soapMessage = mCtx. getMessage(); SOAPBody soapBody = soapMessage. getSOAPBody(); Node firstChild = soapBody. getFirstChild(); // operation identify String timeStamp = getTimestamp(); String signature = getSignature(firstChild. getLocalName(), timeStamp, secretBytes); append(firstChild, "Signature", signature); append(firstChild, "Timestamp", timeStamp); } catch(Exception e) { throw new RuntimeException("SOAPException thrown. ", e); } } go back precise; // proceed down the handler chain } deepest String getSignature(String operation, String timeStamp, byte[ ] secretBytes) { try out { String toSign = operation + timeStamp; byte[] toSignBytes = getBytes(toSign); Mac signer = Mac. getInstance("HmacSHA256"); SecretKeySpec keySpec = new SecretKeySpec(secretBytes, "HmacSHA256"); signer. init(keySpec); signer. update(toSignBytes); byte[ ] signBytes = signer. doFinal(); String signature = new String(Base64. encodeBase64(signBytes)); go back signature; } catch(Exception e) { throw new RuntimeException(e); } } deepest String getTimestamp() { Calendar calendar = Calendar. getInstance(); SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'"); dateFormat. setTimeZone(TimeZone. getTimeZone("UTC")); go back dateFormat. format(calendar. getTime()); } inner most void append(Node node, String elementName, String elementText) { aspect aspect = node. getOwnerDocument(). createElement(elementName); aspect. setTextContent(elementText); node. appendChild(element); } deepest byte[ ] getBytes(String str) { test { go back str. getBytes("UTF-8"); } catch(Exception e) { throw new RuntimeException(e); } } } The code within the AwsHandlerResolver category registers handlers with the runtime, and the AwsSoapHandler is the message instead of a logical handler that will get registered.

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