There are two options for using Web Services from MATLAB:

1. For simple web services, use createClassFromWsdl generated stubs.

2. For any reasonably complex schema defined Web Service (this includes most web services), the best option is to use a java based library like axis or cxf and their wsdl2java tool to create java stubs (client side interfaces for the Web Service).

As an example, for the following WSDL:

 <xsd:complexType name="phone">
   <xsd:all>
     <xsd:element name="areaCode" type="xsd:int"/>
     <xsd:element name="exchange" type="xsd:string"/>
     <xsd:element name="number" type="xsd:string"/>
   </xsd:all>
 </xsd:complexType>

WSDL2Java in Axis would generate:

 public class Phone implements java.io.Serializable {
   public Phone() {...}
   public int getAreaCode() {...}
   public void setAreaCode(int areaCode) {...}
   public java.lang.String getExchange() {...}
   public void setExchange(java.lang.String exchange) {...}
   public java.lang.String getNumber() {...}
   public void setNumber(java.lang.String number) {...}
   public boolean equals(Object obj) {...}
   public int hashCode() {...}
 }

The above example has been taken from Axis user guide on ws.apache.org

The generated stubs can then be used in MATLAB as Java objects.