java.lang.ClassNotFoundException: org.codehaus.xfire.aegis.type.TypeMappingRegistry

I created a WS client using the xfire tool, however now when I am trying to use it the following error occur form at the run time:

HTTP Status 500 -
<hr />

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception
<pre>org.apache.jasper.JasperException: An exception occurred processing JSP page /products.jsp at line 30

27: <%
28: //if(!keywords.equals(" ")){
29:
30: AWSECommerceServiceClient client = new AWSECommerceServiceClient();
31:
32: // create a default service endpoint
33: AWSECommerceServicePortType service = client.getAWSECommerceServicePort();

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</pre>

root cause
<pre>javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/codehaus/xfire/aegis/type/TypeMappingRegistry
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
org.apache.jsp.products_jsp._jspService(products_jsp.java:140)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</pre>

root cause
<pre>java.lang.NoClassDefFoundError: org/codehaus/xfire/aegis/type/TypeMappingRegistry
org.apache.jsp.products_jsp._jspService(products_jsp.java:92)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</pre>

root cause
<pre>java.lang.ClassNotFoundException: org.codehaus.xfire.aegis.type.TypeMappingRegistry
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
java.lang.ClassLoader.loadClassInternal(Unknown Source)
org.apache.jsp.products_jsp._jspService(products_jsp.java:92)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</pre>