Webservice : From Servlet

**HeavyAlex** · 29/06/2010, 17h23

Bonjour,

OS : Windows XP SP2
IDE : ECLIPSE Ganymede
Serveur : APACHE V6 + Axis2 1.5.1

J'ai implémenté une servlet dans une application web dynamique pour invoquer le serviceweb par défault de AXIS2 (Version).

Voici le code de ma servlet :

Code :

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import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.namespace.QName;
import javax.xml.rpc.Call;
import javax.xml.rpc.ServiceFactory;
/**
 * Servlet implementation class FirstServlet
 */
public class FirstServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
 
    /**
     * @see HttpServlet#HttpServlet()
     */
    public FirstServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
 
	/**
         * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
         */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 
 
    //String wsdlURL ="http://localhost:8080/axis2/services/Version";
    String namespace  = "http://axisversion.sample";
    String serviceName = "Version";
 
 
    try { 
        /* Service lookup */
        ServiceFactory serviceFactory = ServiceFactory.newInstance();
        javax.xml.rpc.Service service = serviceFactory.createService(
            new QName(namespace, "Version"));
 
        /* Service access */
        Call call = (Call) service.createCall();
        call.setTargetEndpointAddress("http://localhost:8080/axis2/services/Version.VersionHttpSoap11Endpoint/");
        call.setPortTypeName(new QName(namespace, serviceName));
        call.setOperationName(new QName(namespace, "getVersion"));
 
        /* Service invocation */
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("Invocation Version webService");
        out.println(call.invoke(new Object[] {}));
        out.close();
    } catch(Exception e) {
        e.printStackTrace();
    }
}
	/**
         * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
         */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request,response);
	}
 
}

Mon répertoire est donc constitué :
ServletTest

Code :

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    |-src
        |-FirstServlet.java
    |-WebContent
        |-META-INF
              |-MANIFEST.MF
        |-WEB-INF
            |-classes
                    |-FirstServlet.class
            |-lib
                    |-jaxrpc.jar
            |-web.xml
        |-index.jsp         pour accéder à la servlet

Voici le wsdl du webservice :

Code :

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  <?xml version="1.0" encoding="UTF-8" ?> 
- <wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:ns1="http://org.apache.axis2/xsd" xmlns:ns="http://axisversion.sample" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" targetNamespace="http://axisversion.sample">
  <wsdl:documentation>Version</wsdl:documentation> 
- <wsdl:types>
- <xs:schema attributeFormDefault="qualified" elementFormDefault="qualified" targetNamespace="http://axisversion.sample">
- <xs:complexType name="Exception">
- <xs:sequence>
  <xs:element minOccurs="0" name="Exception" nillable="true" type="xs:anyType" /> 
  </xs:sequence>
  </xs:complexType>
- <xs:element name="Exception">
- <xs:complexType>
- <xs:sequence>
  <xs:element minOccurs="0" name="Exception" nillable="true" type="ns:Exception" /> 
  </xs:sequence>
  </xs:complexType>
  </xs:element>
- <xs:element name="getVersionResponse">
- <xs:complexType>
- <xs:sequence>
  <xs:element minOccurs="0" name="return" nillable="true" type="xs:string" /> 
  </xs:sequence>
  </xs:complexType>
  </xs:element>
  </xs:schema>
  </wsdl:types>
  <wsdl:message name="getVersionRequest" /> 
- <wsdl:message name="getVersionResponse">
  <wsdl:part name="parameters" element="ns:getVersionResponse" /> 
  </wsdl:message>
- <wsdl:message name="Exception">
  <wsdl:part name="parameters" element="ns:Exception" /> 
  </wsdl:message>
- <wsdl:portType name="VersionPortType">
- <wsdl:operation name="getVersion">
  <wsdl:input message="ns:getVersionRequest" wsaw:Action="urn:getVersion" /> 
  <wsdl:output message="ns:getVersionResponse" wsaw:Action="urn:getVersionResponse" /> 
  <wsdl:fault message="ns:Exception" name="Exception" wsaw:Action="urn:getVersionException" /> 
  </wsdl:operation>
  </wsdl:portType>
- <wsdl:binding name="VersionSoap11Binding" type="ns:VersionPortType">
  <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" /> 
- <wsdl:operation name="getVersion">
  <soap:operation soapAction="urn:getVersion" style="document" /> 
- <wsdl:input>
  <soap:body use="literal" /> 
  </wsdl:input>
- <wsdl:output>
  <soap:body use="literal" /> 
  </wsdl:output>
- <wsdl:fault name="Exception">
  <soap:fault use="literal" name="Exception" /> 
  </wsdl:fault>
  </wsdl:operation>
  </wsdl:binding>
- <wsdl:binding name="VersionSoap12Binding" type="ns:VersionPortType">
  <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" /> 
- <wsdl:operation name="getVersion">
  <soap12:operation soapAction="urn:getVersion" style="document" /> 
- <wsdl:input>
  <soap12:body use="literal" /> 
  </wsdl:input>
- <wsdl:output>
  <soap12:body use="literal" /> 
  </wsdl:output>
- <wsdl:fault name="Exception">
  <soap12:fault use="literal" name="Exception" /> 
  </wsdl:fault>
  </wsdl:operation>
  </wsdl:binding>
- <wsdl:binding name="VersionHttpBinding" type="ns:VersionPortType">
  <http:binding verb="POST" /> 
- <wsdl:operation name="getVersion">
  <http:operation location="Version/getVersion" /> 
- <wsdl:input>
  <mime:content type="text/xml" part="getVersion" /> 
  </wsdl:input>
- <wsdl:output>
  <mime:content type="text/xml" part="getVersion" /> 
  </wsdl:output>
  </wsdl:operation>
  </wsdl:binding>
- <wsdl:service name="Version">
- <wsdl:port name="VersionHttpSoap11Endpoint" binding="ns:VersionSoap11Binding">
  <soap:address location="http://localhost:8080/axis2/services/Version.VersionHttpSoap11Endpoint/" /> 
  </wsdl:port>
- <wsdl:port name="VersionHttpSoap12Endpoint" binding="ns:VersionSoap12Binding">
  <soap12:address location="http://localhost:8080/axis2/services/Version.VersionHttpSoap12Endpoint/" /> 
  </wsdl:port>
- <wsdl:port name="VersionHttpEndpoint" binding="ns:VersionHttpBinding">
  <http:address location="http://localhost:8080/axis2/services/Version.VersionHttpEndpoint/" /> 
  </wsdl:port>
  </wsdl:service>
  </wsdl:definitions>

Voici le code du fichier web.xml:

Code :

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>ServletTest</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <description>Test invocation web service from servlet</description>
    <display-name>FirstServlet</display-name>
    <servlet-name>FirstServlet</servlet-name>
    <servlet-class>FirstServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>FirstServlet</servlet-name>
    <url-pattern>/FirstServlet</url-pattern>
  </servlet-mapping>
</web-app>

J'exporte le projet sous la forme d'un fichier .war et le déploie sur Apache Tomcat. Jusqu'ici tout va bien !

Lorsque j'accède à l'adresse suivante :
http://localhost:8080/ServletTest/FirstServlet
j'obtient une erreur dans le fichier de log de tomcat

javax.xml.rpc.ServiceException: java.lang.ClassNotFoundException: org.apache.axis.client.ServiceFactory
at javax.xml.rpc.ServiceFactory.newInstance(ServiceFactory.java:69)
at FirstServlet.doGet(FirstServlet.java:40)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
at java.lang.Thread.run(Thread.java:619)

Je ne comprend pourquoi :
Dans Eclipse mon Web App Librairie contient bien le jar jaxrpc.jar
Et pourquoi l'erreur mentionne

org.apache.axis.client.ServiceFactory

alors que dans ma servlet j'ai effectué un import de :

import javax.xml.rpc.Call;
import javax.xml.rpc.ServiceFactory;

Merci à vous pour votre aide, je tourne en rond et je ne trouve pas la solution.

**Coulon Arnaud** · 13/07/2010, 12h04

Je pense qu'il te manque des jars dans tes lib.

Il te manque au minimum un jar du type axis.jar (qui contient la classe org.apache.axis.client.ServiceFactory).

Le jar jaxrpc.jar contient la classe javax.xml.rpc.ServiceFactory.
Mais la méthode newInstance de cette classe fait appel à l'autre classe mentionnée en erreur : org.apache.axis.client.ServiceFactory.

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    public static ServiceFactory newInstance()
        throws ServiceException
    {
        return (ServiceFactory)FactoryFinder.find("javax.xml.rpc.ServiceFactory", "org.apache.axis.client.ServiceFactory");
        FactoryFinder.ConfigurationError e;
        e;
        throw new ServiceException(e.getException());
    }

Bon courage,

Arnaud

Webservice : From Servlet

Services Web Java

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