Master


'


s Thesis 2006 


FACHHOCHSCHULE


HOCHSCHULE F


U


R


LI Hui 


STUTTGART


TECHNIK


The implementation 


        STUTTGART UNIVERSITY OF APPLIED 


SCIENCES 


3.5  KXML XML Parser 


The  XML  parser  used  in  this  application  is  kXML  2.0.  In  order  to  make  kXML 


classes available to the application, kxml2 src.zip package from the kXML site need 


to  be  downloaded.  Then,  copy  the  contents of  the  package  to the 


src


  folder  in  the 


development system.   


As described before, the GetCapabilities XML document should be parsed. 


You can see one section of this XML document in Listing 19. 


<<


Service


>


<


Name


>


OGC:WMS




Name


>


   


<


Title


>


Open Source Map Server




Title


>


   


<


Abstract


>


Open source based WMS compliant Web Map Sever developed 


for educational purpose maintained by Filmon Mehari under supervision 


of Professor Dr. Ing. Franz Josef Behr .Contact: 


franz josef.behr@hft stuttgart.de or filmon44@yahoo.com.SVG data 


from all over the world. 




Abstract


>


   


<


KeywordList


>


<


Keyword


>


WMS 1.1.1




Keyword


>


   


   


.. 




Service


>


Listing 19:


 One section of the GetCapabilities XML document 


In  order to  capture  data  from  WMS,  the  application  should  open  a  URL  connection 


and  get  GetCapabilities  XML  data  on  an  InputStream.  The  InputStream  is  made 


available  to  the  XMLParser  through  an  InputStreamReader.  This  is  illustrated  in 


Listing 20. 


HttpConnection hc = (HttpConnection)Connector.open(url); 


InputStream is = hc.openInputStream(); 


Reader reader = new InputStreamReader(is); 


KXmlParser parser = new KXmlParser(); 


parser.setInput( reader); 


Listing 20:


 Get the GetCapabilities XML data from WMS 


When  the  XMLParser s 


read()


  method  encounters  an  item,  such  as  the  event  name 


(tag  name),  and  read  event  text  (that  is,  the  text enclosed  between  the  start  and  end 


tags, also called content). In Listing 21, the parser finds the tag name of title of WMS, 


then reads the content further and extractes the text for displaying purposes. 


46 






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