How to consume a SOAP web service in Java

Question

Can someone please help me with some links and other on how to consume a web service WSDL in Java

User · Answer

As some sugested you can use apache or jax-ws  You can also use tools that generate code from WSDL such as ws-import but in my opinion the best way to consume web service is to create a dynamic client and invoke only operations you want not everything from wsdl  You can do this by creating a dynamic client  Sample code   String endpointUrl         QName serviceName   new QName  http   com ibm was wssample echo      EchoService    QName portName   new QName  http   com ibm was wssample echo      EchoServicePort         Create a service and add at least one port to it       Service service   Service create serviceName   service addPort portName  SOAPBinding SOAP11HTTP BINDING  endpointUrl        Create a Dispatch instance from a service      Dispatch lt SOAPMessage gt  dispatch   service createDispatch portName   SOAPMessage class  Service Mode MESSAGE        Create SOAPMessage request         compose a request message MessageFactory mf   MessageFactory newInstance SOAPConstants SOAP 1 1 PROTOCOL       Create a message   This example works with the SOAPPART  SOAPMessage request   mf createMessage    SOAPPart part   request getSOAPPart        Obtain the SOAPEnvelope and header and body elements  SOAPEnvelope env   part getEnvelope    SOAPHeader header   env getHeader    SOAPBody body   env getBody        Construct the message payload  SOAPElement operation   body addChildElement  invoke    ns1     http   com ibm was wssample echo     SOAPElement value   operation addChildElement  arg0    value addTextNode  ping    request saveChanges         Invoke the service endpoint      SOAPMessage response   dispatch invoke request        Process the response

User · Answer

I will use CXF  also you can think of AXIS 2    The best way to do it may be using JAX RS Refer this example  Example   wsimport -p stockquote http   stockquote xyz quote wsdl  This will generate the Java artifacts and compile them by importing the http   stockquote xyz quote wsdl    I

User · Answer

There are many options to consume a SOAP web service with Stub or Java classes created based on WSDL  But if anyone wants to do this without any Java class created  this article is very helpful  Code Snippet from the article   public String someMethod   throws MalformedURLException  IOException      Code to make a webservice HTTP request String responseString       String outputString       String wsURL     lt Endpoint of the webservice to be consumed gt    URL url   new URL wsURL   URLConnection connection   url openConnection    HttpURLConnection httpConn    HttpURLConnection connection  ByteArrayOutputStream bout   new ByteArrayOutputStream    String xmlInput    entire SOAP Request    byte   buffer   new byte xmlInput length     buffer   xmlInput getBytes    bout write buffer   byte   b   bout toByteArray    String SOAPAction     lt SOAP action of the webservice to be consumed gt       Set the appropriate HTTP parameters  httpConn setRequestProperty  Content-Length   String valueOf b length    httpConn setRequestProperty  Content-Type    text xml  charset utf-8    httpConn setRequestProperty  SOAPAction   SOAPAction   httpConn setRequestMethod  POST    httpConn setDoOutput true   httpConn setDoInput true   OutputStream out   httpConn getOutputStream      Write the content of the request to the outputstream of the HTTP Connection  out write b   out close      Ready with sending the request     Read the response  InputStreamReader isr   null  if  httpConn getResponseCode      200      isr   new InputStreamReader httpConn getInputStream       else     isr   new InputStreamReader httpConn getErrorStream        BufferedReader in   new BufferedReader isr      Write the SOAP message response to a String  while   responseString   in readLine       null    outputString   outputString   responseString      Parse the String output to a org w3c dom Document and be able to reach every node with the org w3c dom API  Document document   parseXmlFile outputString      Write a separate method to parse the xml input  NodeList nodeLst   document getElementsByTagName   lt TagName of the element to be retrieved gt     String elementValue   nodeLst item 0  getTextContent    System out println elementValue      Write the SOAP message formatted to the console  String formattedSOAPResponse   formatXML outputString      Write a separate method to format the XML input  System out println formattedSOAPResponse   return elementValue      For those who re looking for a similar kind of solution with file upload while consuming a SOAP API  please refer to this post  How to attach a file  pdf  jpg  etc  in a SOAP POST request

User · Answer

Here you can find a nice tutorial of how you can create and consume a SOAP service through WSDL  Long story short you need to call wsimport tool from command line  you can find it in your jdk  with parameters like -s  source for  java files  -d  destination for  class files  and the wsdl link      wsimport -s  C  workspace soap src main java com test soap ws  -d  C  workspace soap target classes com test soap ws  http   localhost 8855 soap test wsdl   After the stubs are created  you can call the webservices very easy something like    TestHarnessService harnessService   new TestHarnessService    ITestApi testApi   harnessService getBasicHttpBindingITestApi    testApi resetLogMemoryTarget

[java] How to consume a SOAP web service in Java

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