Spring + JAX-WS : ‘xxx’ is an interface, and JAXB can’t handle interfaces 错误解决方法

错误栈：
Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptions
demo.order.dao.ParamDao is an interface, and JAXB can't handle interfaces.
 this problem is related to the following location:
  at demo.order.dao.ParamDao
  at private demo.order.dao.ParamDao demo.jaxrs.server.jaxws_asm.SetParamDao.arg0
  at demo.jaxrs.server.jaxws_asm.SetParamDao
demo.order.dao.ParamDao does not have a no-arg default constructor.
 this problem is related to the following location:
  at demo.order.dao.ParamDao ....
解决方法：标记该方法为非web method
    private ParamDao paramDao;
    
    @WebMethod(exclude = true)
 public void setParamDao(ParamDao paramDao) {
  this.paramDao = paramDao;
 }
ref: http://www.mkyong.com/webservices/jax-ws/spring-jax-ws-xxx-is-an-interface-and-jaxb-cant-handle-interfaces/