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我目前正尝试使用EWS Java API连接到我们公司的Exchange服务器。 不幸的是，当尝试执行任何东西（无论是自动发现或手动使用setUrl后，一些其他的动作）我收到以下错误：EWS Java 1.2 - 无法连接到公司Exchange服务器
Apr 17, 2013 7:57:10 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused: connect
Apr 17, 2013 7:57:10 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request
Apr 17, 2013 7:57:11 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused: connect
Apr 17, 2013 7:57:11 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request
Apr 17, 2013 7:57:12 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused: connect
Apr 17, 2013 7:57:12 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request
Exception in thread "main" microsoft.exchange.webservices.data.ServiceRequestException: The request failed. Connection refused: connect
at microsoft.exchange.webservices.data.ServiceRequestBase.getEwsHttpWebResponse(Unknown Source)
at microsoft.exchange.webservices.data.ServiceRequestBase.validateAndEmitRequest(Unknown Source)
at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(Unknown Source)
at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(Unknown Source)
at microsoft.exchange.webservices.data.ExchangeService.bindToFolder(Unknown Source)
at microsoft.exchange.webservices.data.ExchangeService.bindToFolder(Unknown Source)
at microsoft.exchange.webservices.data.CalendarFolder.bind(Unknown Source)
at microsoft.exchange.webservices.data.CalendarFolder.bind(Unknown Source)
at er.dream.tgif.outlook.OutlookTest.findAppointments(OutlookTest.java:59)
at er.dream.tgif.outlook.OutlookTest.main(OutlookTest.java:45)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:618)
at microsoft.exchange.webservices.data.EwsSSLProtocolSocketFactory.createSocket(Unknown Source)
at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
at microsoft.exchange.webservices.data.HttpClientWebRequest.executeRequest(Unknown Source)
... 10 more
我试图用我的凭据到Exchange服务器的Web界面登录，这是工作的罚款。假设它可能与SSL问题有关，我也尝试实施虚拟TrustManager并将其设置为默认值HttpsUrlConnections。
不幸的是，这并没有帮助，错误仍然存在。
一个值得注意的事实：在我的Outlook中，我可以看到Exchange服务器配置为使用代理服务器和特定的SSL URL来连接它。 （代理身份验证设置为NTLM） 我不太清楚如何在编码中反映这一点。
可能这是导致异常还是我在这里看到一个不同的问题？