@WebService
@Service
public class WeiXinWebServiceImpl implements IWeiXinWebService {

    @Resource 
    private WebServiceContext webServiceContext; 

    public String getLoginUser() {
        HttpServletRequest request = (HttpServletRequest) webServiceContext.getMessageContext().get(MessageContext.SERVLET_REQUEST);
        HttpSession session = request.getSession();
        return session.getAttribute("loginUser").toString();
    }
}

​