使用Java中的自动发现连接到Exchange服务器

我们正在尝试使用自动发现url连接到exchange服务器。使用REST客户端运行时，url返回wsdl文件：

System.setProperty("javax.net.ssl.trustStore", "truststore.jks");
System.setProperty("javax.net.ssl.trustStoreType", "JKS");

KeyStore trustStore = KeyStore.getInstance("JKS");
trustStore.load(new FileInputStream("truststore.jks"), null);
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        trustManagerFactory.init(trustStore);

SSLContext ctx = SSLContext.getInstance("SSL");
ctx.init(null, trustManagerFactory.getTrustManagers(), null);

HostnameVerifier hostnameVerifier = HttpsURLConnection.getDefaultHostnameVerifier();
ClientConfig config = new com.sun.jersey.api.client.config.DefaultClientConfig();
client = Client.create(config);
config.getProperties().put(HTTPSProperties.PROPERTY_HTTPS_PROPERTIES, new HTTPSProperties(hostnameVerifier, ctx));
webResource = client.resource("https://autodiscover.company.com/xxxx/autodiscover.svc");
client.addFilter(new HTTPBasicAuthFilter(username, password));

但在使用exchange服务运行时返回401未经授权的错误：

System.setProperty("javax.net.ssl.trustStore", "truststore.jks");
System.setProperty("javax.net.ssl.trustStoreType", "JKS");
KeyStore trustStore = KeyStore.getInstance("JKS");
trustStore.load(new FileInputStream("truststore.jks"),null);
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(trustStore);

SSLContext ctx = SSLContext.getInstance("SSL");
ctx.init(null, trustManagerFactory.getTrustManagers(), null);

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010_SP1);
service.setTraceEnabled(true);
service.setPreAuthenticate(true);
ExchangeCredentials credentials = new WebCredentials(username,password,domain);
service.setCredentials(credentials);
service.setUserAgent(user);
service.setUrl(new java.net.URI("https://autodiscover.company.com/xxxx/autodiscover.svc"));

以下是堆栈跟踪：

microsoft.exchange.webservices.data.HttpErrorException: The remote server returned an error: (401)Unauthorize
at microsoft.exchange.webservices.data.ServiceRequestBase.validateAndEmitRequest(ServiceRequestBase.java:729)
    at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:36)
    at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:140)
    at microsoft.exchange.webservices.data.ExchangeService.findItems(ExchangeService.java:945)
    at microsoft.exchange.webservices.data.ExchangeService.findItems(ExchangeService.java:998)
    at microsoft.exchange.webservices.data.ExchangeService.findItems(ExchangeService.java:1070)

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请建议。

将ews java api jar版本更改为2.0，这就成功了：-）