Re: problem in a web service

Francesco:

Can we see the source code for xml_pars
Also please provide the wsdl you are using

Molte Grazie,

Martin-
001-617-852-7822
  ----- Original Message ----- 
  From: Francesco Dipalo 
  To: [email protected] 
  Sent: Monday, January 17, 2005 6:18 AM
  Subject: problem in a web service


   I have written this .dd file: 
  <isd:service 
     xmlns:isd="http://xml.apache.org/xml-soap/deployment"
     id="urn:Composizione">
     
     <isd:provider type="java"
           scope="Application"
           methods="compone">
       <isd:java class="service_controller"
           static="false"/>
     </isd:provider>
     <isd:faultListener>org.apache.soap.server.DOMFaultListener</isd:faultListener>
     <isd:mappings>
     </isd:mappings>    
  </isd:service>

  this client  ( in %SOAP-HOME%\WEB-INF\classes)

  import java.net.*;
  import java.util.*;
  import java.io.*;
  import org.apache.soap.*;
  import org.apache.soap.rpc.*;

  public class Client {
     static boolean corretto1=false;
     static boolean corretto2=false;
     
     static boolean Copy(String path, String filename) throws Exception {
        boolean flag=false;
        File pathTo = new File(path + filename); 
        File pathFrom = new File(filename);
        try { 
           FileInputStream inputFile = new FileInputStream(pathFrom); 
           int bytes = inputFile.available(); 
           pathTo.createNewFile(); 
           FileOutputStream outputFile = new FileOutputStream(pathTo); 
           int readBytes = 0; 
           while (readBytes < bytes) {   
              outputFile.write(inputFile.read()); 
              readBytes++; 
           } 
        inputFile.close(); 
        outputFile.close();
        flag=true; 
        } catch (FileNotFoundException e) { 
          flag=false;
          System.out.println("Il file: " + pathFrom.toString() + ", non esiste!"); 
          e.printStackTrace(); 
        } 
        return flag;
     }

     public static void main(String[] args) throws Exception {
        String c_Nomefile="";
        String c_Nomefile1="";
        String c_Nomefile2="";
        String CATALINA_HOME=System.getProperty("catalina.home"); 
        String [] lista = new File(".").list();
        URL url = new URL("http://localhost:8080/soap/servlet/rpcrouter"); 
        System.out.println("ELENCO SERVIZI:");
        for(int cx=0; cx<lista.length; cx++)
           if ( new File(lista[cx]).isFile() )                           //verifica se è file
              if ( lista[cx].toLowerCase().lastIndexOf(".owl") >= 0)     //e con estensione .owl
                 System.out.println((" * " + lista[cx]+"             ").substring(0,20));
        try {
           do {
              System.out.print("Servizio principale (digitare anche l'estensione): ");
              BufferedReader in1= new BufferedReader(new InputStreamReader(System.in));
              c_Nomefile1 = in1.readLine();
           } while (!(c_Nomefile1.endsWith(".owl")));
           do {
              System.out.print("Servizio da comporre (digitare anche l'estensione): ");
              BufferedReader in2= new BufferedReader(new InputStreamReader(System.in));
              c_Nomefile2 = in2.readLine();
           } while (!(c_Nomefile1.endsWith(".owl")));
           c_Nomefile = c_Nomefile1 + c_Nomefile2; // crea nome file composto
        } catch (Exception e) { e.printStackTrace(); }
        c_Nomefile = c_Nomefile1.substring(0,c_Nomefile1.indexOf('.')) + c_Nomefile2; 
        corretto1=Copy(CATALINA_HOME+"\\bin\\",c_Nomefile1);
        corretto2=Copy(CATALINA_HOME+"\\bin\\",c_Nomefile2);
        if ((corretto1==true) && (corretto2==true)) {
           Call call = new Call();
           call.setTargetObjectURI("urn:Composizione");   
           call.setEncodingStyleURI(Constants.NS_URI_SOAP_ENC);
           Vector params = new Vector();
           params.addElement(new Parameter("file_1", String.class, c_Nomefile1, null));
           params.addElement(new Parameter("file_2", String.class, c_Nomefile2, null));
           params.addElement(new Parameter("file_composto", String.class, c_Nomefile, null));
           params.addElement(new Parameter("path_output", String.class, CATALINA_HOME+"\\webapps\\soap\\WEB-INF\\classes\\", null));
           
           call.setParams(params);
           try {
       call.setMethodName("compone");   
              Response resp = call.invoke(url, "");
              if (resp.generatedFault()) {
                 Fault fault = resp.getFault();
                 System.err.println("Generated fault: " + fault);
              } else {
                 Parameter ret = resp.getReturnValue();
                 Object value = ret.getValue();
                 switch (value.hashCode()) {
                    case 0: System.out.println("I due file non sono componibili"); break;
                    case 1: System.out.println("I due file sono stati composti nel file " +c_Nomefile); break;
                    case -1: System.out.println("Utility interrotta per errori"); break;
                 }
              }
           } catch (SOAPException e) {
              System.err.println("Caught SOAPException (" +e.getFaultCode() + "): " +e.getMessage());
           }
        } 
        try { 
           System.out.print("\nPremere INVIO per terminare...\n");
           System.in.read();
        } catch(Exception e) {}
     }
  }

  this service ( in %SOAP-HOME%\WEB-INF\classes)

  import java.io.*;
  //import xml_pars;

  public class service_controller {
   public static int c_Comp;                     //esito della composizione (1=ok, 0=non composto, -1=errore tag)
   public static String tempor;                  //final static String fileTMP = "tmp.owl";

   private static String c_Tabella;
   private static xml_pars owl = new xml_pars();  //classe parsing XML
   private static String linea;
   private static boolean corretto;
   
   //---------------------//
   //     COMPOSIZIONE    //      MAIN
   //---------------------//
   //Costruttori della classe:  //si possono togliere
           public service_controller () { }
           public service_controller (String file_1, String file_2, String file_composto, String path_output) {
                  compone(file_1, file_2, file_composto, path_output);
           }
   public static String get_output() { if (c_Comp <= 0) tempor = ""; return tempor; } //metodo di controllo
   public static int compone0(String file_1, String file_2, String file_composto, String path_output) {
         metodi_xml(file_2); return (c_Comp = c_ProceduraTag(file_1));
   }
   public static int compone(String file_1, String file_2, String file_composto, String path_output) {
         if (compone0(file_1, file_2, file_composto, path_output) <= 0) {

                System.out.println("\nI due servizi non sono tra loro componibili.");
                waitkey();

         } else {

                System.out.println("\nFILE COMPOSTO:\n");
                int cx = 0; owl.put_parsing(get_output());
                do {    if ( ((cx++)%16) == 0) waitkey();
                        System.out.print(owl.ctags());
                } while (owl.nido >= 0 || cx<3);

                if (path_output.length() > 0) owl.newdir(path_output);       //se non c'S crea la cartella
                owl.put_parsing(get_output());
                owl.save_parsing(path_output + "/" + file_composto); //c_EliminaFile(); fare in modo che in path_output compaia il percorso fino a soap
                //if (file_1.length() > 0) { owl.load_parsing(file_1); owl.save_parsing(path_output + "/" + file_1); }
                //if (file_2.length() > 0) { owl.load_parsing(file_2); owl.save_parsing(path_output + "/" + file_2); }

         }
        return c_Comp;
   }


   //---------------------//
   //     METODI XML      //      PROCEDURE UTILITY
   //---------------------//
  // Carica un file.owl e lo compila in una tabella di: tipo, nome del tag + \n
   public static void metodi_xml (String file) {
         System.out.print("Apro il file "+file+" ... ");
         if (! (corretto = owl.load_parsing(file)) )
                System.out.println("Errore!");
         else  {  // crea tabella
                System.out.println("Ok!\nCompilo la tabella...");
                owl.tag(2);          //salta header (tag <?> e tag Ontology)
                c_Tabella = tempor = "";
                while(true) {
                       c_AnalisiTag(owl.tags()); if (owl.nido < 0) break;
                       if (linea.length() > 1) c_Tabella += linea + "\n";
                       tempor += owl.tag_root(owl.xml_id);
                }
         }
   }
  // Compila il singolo tag (tipo, nome del tag + \n)
   public static int c_AnalisiTag(String tag) {           // ritorna tipo tag e linea       
         linea = ".";       
         if (owl.si_tag(tag,"<owls:") > 0) {
                linea = owl.search_true(tag, "owls:Class ", "C") +
                        owl.search_true(tag, "owls:ObjectProperty ", "P") +
                        //owl.search_true(tag, "owls:Ontology ", "O") +
                        linea;
                if (linea.length() == 1) {
                       System.out.println("Tag sconosciuto: " + tag);
                       corretto = false; };
                linea += owl.search_tag(tag, "name=");    //"owls:name"
         };
         return linea.charAt(0);
   }
  // Esegue la composizione del file con il file passato in metodi_xml
   public static int c_ProceduraTag(String file) {        // esegue utility
         String temp, tag; int comp = 0; temp = tag = "";
         System.out.print("Apro il file "+file+" ... ");
         if (! owl.load_parsing(file) ) {
                System.out.println("Errore!"); corretto = false; };
         if (corretto) {
                System.out.println("Ok!\nAvvio utility...");
                owl.tag(2);   //salta header (tag <?> e tag Ontology)
                do {   tag = owl.tags();    //o tag = owl.tag(0);
                       int tipo = c_AnalisiTag(tag);
                       if (linea.length() > 1) {
                          tag = owl.tag_root(owl.xml_id);
                          if (c_Tabella.indexOf(linea) < 0) { temp += tag; }
                            else {  if (tipo=='C') comp = 1;  //...
                          }
                      }
                } while (owl.nido >= 0);
         }
         if (!corretto) { System.out.println("Utility interrotta per errori."); comp = -1; };
         owl.reset(); //aggiunge intestazione padre
         tempor = owl.tags() + owl.tags() + tempor + temp + tag;
         return comp;
   }


  //---------------------//
  //      OUTPUT         //       PROCEDURE OUTPUT
  //---------------------//
   public static void waitkey() {         // Attende il tasto invio
    try { System.out.print("\nPremere INVIO per proseguire...\n");
          System.in.read(); } catch(Exception e) {}
   }



   //--------------
   // MAIN DI PROVA
   //--------------
   //public static void main(String []argv) {
   //       compone("PROVA1.OWL", "PROVA2.OWL", "prova1prova2.owl", ".");
   //}       

  }

  but I received this exception (the xml_pars.class is in %SOAP-HOME%\WEB-INF\classes)

  Generated fault: [Attributes={}] [faultCode=SOAP-ENV:Server] [faultString=Except
  ion from service object: null] [faultActorURI=/soap/servlet/rpcrouter] [DetailEn
  tries=
  [(0)=<stackTrace>java.lang.NullPointerException
          at xml_pars.tag(Unknown Source)
          at xml_pars.reset(Unknown Source)
          at service_controller.c_ProceduraTag(service_controller.java:104)
          at service_controller.compone0(service_controller.java:23)
          at service_controller.compone(service_controller.java:26)
          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
          at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
  java:39)
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
  sorImpl.java:25)
          at java.lang.reflect.Method.invoke(Method.java:324)
          at org.apache.soap.server.RPCRouter.invoke(RPCRouter.java:146)
          at org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java
  :129)
          at org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.
  java:354)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
  icationFilterChain.java:247)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
  ilterChain.java:193)
          at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
  alve.java:256)
          at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
  t.invokeNext(StandardPipeline.java:643)
          at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
  a:480)
          at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

          at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
  alve.java:191)
          at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
  t.invokeNext(StandardPipeline.java:643)
          at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
  a:480)
          at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

          at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
  2422)
          at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
  ava:180)
          at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
  t.invokeNext(StandardPipeline.java:643)
          at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
  rValve.java:171)
          at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
  t.invokeNext(StandardPipeline.java:641)
          at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
  ava:163)
          at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
  t.invokeNext(StandardPipeline.java:641)
          at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
  a:480)
          at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

          at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
  ve.java:174)
          at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
  t.invokeNext(StandardPipeline.java:643)
          at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
  a:480)
          at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

          at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:19
  9)
          at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
  :828)
          at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
  ssConnection(Http11Protocol.java:700)
          at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java
  :584)
          at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
  ool.java:683)
          at java.lang.Thread.run(Thread.java:534)
  </stackTrace>]
  ] [FaultEntries=]

  Why? Can anyone help me?
  TIA
  TIA




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