factory pattern in spring

I have the following factory class, wonder if this code can be implemented in better way. I saw few discussions about spring factory bean, but don't find good examples.

@service
public CustomerSearchFactory{
  @Autowired
  private CustomerSearchByID searchById;
  @Autowired
  private CustomerSearchByName searcyByName;
  @Autowired
  private CustomerSearchBySSN searchBySSN;

  public CustomerSearch getInstance(Request param){
    if (StringUtils.isNotBlank(param.getID()){
        return searchById;
    }else if (StringUtils.isNotBlank(param.getName()){
        return searcyByName;
    }else if (StringUtils.isNotBlank(param.getSSN()){
        return searchBySSN;
    }
  }  
}

@service
public CustomerSearchByID implements CustomerSearch{
  @Autowired
  private Service1 service1;  
  public Response search(Request request){
   --
   -- 
   ReturnResponse rs = service1.performSearch(inputRequest);
   --
   return response;
 }  
}

@service
public CustomerSearchBySSN implements CustomerSearch{
  @Autowired
  private Service2 service2;  
  public Response search(Request request){
   --
   -- 
   ReturnResponse rs = service2.performSSNSearch(inputRequest);
   --enter code here`
   return response;
 }  
}

caller code:

CustomerSearch customerSearch= customerSearchFactory.getInstance(param)
response = customerSearch.search(request);

I am using the spring 3.1 framework and want to know if this code can be optimized.