XsdBasedSoap11Wsdl4jDefinitionBuilder error while generaing wsdl

[mvPrasad Regula]

While I was trying to generate it is throwing an exception. I am pasting the exception below

   org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'echo' defined in ServletContext resource [/WEB-INF/spring-ws-servlet.xml]: Cannot create inner bean 'org.springframework.ws.wsdl.wsdl11.builder.XsdBasedSoap11Wsdl4jDefinitionBuilder#1498436' of type [org.springframework.ws.wsdl.wsdl11.builder.XsdBasedSoap11Wsdl4jDefinitionBuilder] while setting bean property 'builder'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.ws.wsdl.wsdl11.builder.XsdBasedSoap11Wsdl4jDefinitionBuilder#1498436' defined in ServletContext resource [/WEB-INF/spring-ws-servlet.xml]: Invocation of init method failed; nested exception is org.xml.sax.SAXParseException: The processing instruction target matching "[xX][mM][lL]" is not allowed. 

I tried attaching diffferent jars, but no use. Could anyone help me out of this as this is holding my advancement

[mvPrasad Regula]

My servlet xml file is as below

  <bean id="echo" class="org.springframework.ws.wsdl.wsdl11.DynamicWsdl11Definition">
        <property name="builder">
            <bean
                class="org.springframework.ws.wsdl.wsdl11.builder.XsdBasedSoap11Wsdl4jDefinitionBuilder"> //Error at this line
                <property name="schema" value="/WEB-INF/echo.xsd"/>
                <property name="portTypeName" value="Echo"/>
                <property name="locationUri" value="http://localhost:8080/echoservice/"/>
            </bean>
        </property>
    </bean>