java-ews-api 访问Exchange报错

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ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010);
			ExchangeCredentials credentials = new WebCredentials("[e-mail]", "Wafer123!@#", "waferxa.com");
			service.setCredentials(credentials);
			service.setUrl(new java.net.URI("https://exchange.waferxa.com/EWS/Exchange.asmx"));
			//service.autodiscoverUrl("[e-mail]");
			FindFoldersResults folders = service.findFolders(WellKnownFolderName.Inbox, new FolderView(Integer.MAX_VALUE));
			for(Folder folder : folders){
				System.out.println(folder.getDisplayName());
			}

microsoft.exchange.webservices.data.ServiceRequestException: The request failed. The request failed. The remote server returned an error: (401)Unauthorized
at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:62)
at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:147)
at microsoft.exchange.webservices.data.ExchangeService.internalFindFolders(ExchangeService.java:206)
at microsoft.exchange.webservices.data.ExchangeService.findFolders(ExchangeService.java:262)
at microsoft.exchange.webservices.data.ExchangeService.findFolders(ExchangeService.java:304)
at demo.TestConnect.main(TestConnect.java:23)