【发布时间】：2013-03-28 07:57:00
【问题描述】：
我们正在使用 EWS Java API 在我们的 Java 应用程序上使用 Outlook 日历。我在 EWS 上遇到身份验证问题。
我在 rackspace 提供的 Cloud Outlook 帐户上试用了该应用程序，一切正常，所以我知道凭据是准确的。
代码如下：
import java.net.URI;
import java.net.URISyntaxException;
import microsoft.exchange.webservices.data.*;
public class TestClass {
public static void main(String[] args) {
TestClass obj = new TestClass();
obj.testMethod();
}
public void testMethod() {
ExchangeService service = new ExchangeService(
ExchangeVersion.Exchange2007_SP1);
ExchangeCredentials credentials = new WebCredentials("username",
"password");
service.setCredentials(credentials);
try {
service.setUrl(new URI("https://domain/EWS/Exchange.asmx"));
} catch (URISyntaxException e) {
e.printStackTrace();
}
EmailMessage msg;
try {
msg = new EmailMessage(service);
msg.setSubject("hello world");
msg.setBody(MessageBody
.getMessageBodyFromText("Sent using the EWS API"));
msg.getToRecipients().add("test@test.com");
msg.send();
} catch (Exception e) {
e.printStackTrace();
}
}
}
机架空间的网址是：https://connect.emailsrvr.com/EWS/Exchange.asmx
当我输入此帐户的用户名和密码并且它可以工作时，我看到控制台吐出这个：
Apr 05, 2013 1:40:28 PM org.apache.commons.httpclient.auth.AuthChallengeProcessor selectAuthScheme
INFO: NTLM authentication scheme selected
我们的客户端使用的是 ExchangeVersion.Exchange2007_SP1 而 Rackspace 使用的是 ExchangeVersion.Exchange2010 但是当我使用我们的客户端提供的凭据（用户名、密码和 url）时，我收到了这个错误：
Apr 05, 2013 1:49:13 PM org.apache.commons.httpclient.auth.AuthChallengeProcessor selectAuthScheme
INFO: Basic authentication scheme selected
Apr 05, 2013 1:49:13 PM org.apache.commons.httpclient.HttpMethodDirector processAuthenticationResponse
SEVERE: Invalid challenge: Basic
org.apache.commons.httpclient.auth.MalformedChallengeException: Invalid challenge: Basic
at org.apache.commons.httpclient.auth.AuthChallengeParser.extractParams(AuthChallengeParser.java:98)
at org.apache.commons.httpclient.auth.RFC2617Scheme.processChallenge(RFC2617Scheme.java:94)
at org.apache.commons.httpclient.auth.BasicScheme.processChallenge(BasicScheme.java:112)
at org.apache.commons.httpclient.auth.AuthChallengeProcessor.processChallenge(AuthChallengeProcessor.java:162)
at org.apache.commons.httpclient.HttpMethodDirector.processWWWAuthChallenge(HttpMethodDirector.java:694)
at org.apache.commons.httpclient.HttpMethodDirector.processAuthenticationResponse(HttpMethodDirector.java:668)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:193)
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(HttpClientWebRequest.java:358)
at microsoft.exchange.webservices.data.ServiceRequestBase.getEwsHttpWebResponse(ServiceRequestBase.java:930)
at microsoft.exchange.webservices.data.ServiceRequestBase.validateAndEmitRequest(ServiceRequestBase.java:825)
at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:46)
at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:144)
at microsoft.exchange.webservices.data.ExchangeService.internalCreateItems(ExchangeService.java:464)
at microsoft.exchange.webservices.data.ExchangeService.createItem(ExchangeService.java:535)
at microsoft.exchange.webservices.data.Item.internalCreate(Item.java:215)
at microsoft.exchange.webservices.data.EmailMessage.internalSend(EmailMessage.java:125)
at microsoft.exchange.webservices.data.EmailMessage.send(EmailMessage.java:253)
at com.aurora.trials.TestClass.testMethod(TestClass.java:43)
at com.aurora.trials.TestClass.main(TestClass.java:17)
microsoft.exchange.webservices.data.EWSHttpException: Connection not established
at microsoft.exchange.webservices.data.HttpClientWebRequest.throwIfConnIsNull(HttpClientWebRequest.java:394)
at microsoft.exchange.webservices.data.HttpClientWebRequest.getResponseHeaders(HttpClientWebRequest.java:280)
at microsoft.exchange.webservices.data.ExchangeServiceBase.processHttpResponseHeaders(ExchangeServiceBase.java:1045)
at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:58)
at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:144)
at microsoft.exchange.webservices.data.ExchangeService.internalCreateItems(ExchangeService.java:464)
at microsoft.exchange.webservices.data.ExchangeService.createItem(ExchangeService.java:535)
at microsoft.exchange.webservices.data.Item.internalCreate(Item.java:215)
at microsoft.exchange.webservices.data.EmailMessage.internalSend(EmailMessage.java:125)
at microsoft.exchange.webservices.data.EmailMessage.send(EmailMessage.java:253)
at com.aurora.trials.TestClass.testMethod(TestClass.java:43)
at com.aurora.trials.TestClass.main(TestClass.java:17)
我找不到此问题的任何解决方案。请提供您认为我可以获得 EWS 身份验证的任何信息。是什么导致了这些异常？
【问题讨论】：
-
rockspace EWS 似乎使用 NTLM 进行身份验证，而客户端使用的是 Basic，从 Eclipse 的控制台输出中可以看出。
-
而且他们不愿意为我们将身份验证从 Basic 更改为 NTLM。
-
他们终于将身份验证从 Basic 更改为 NTLM，现在可以使用了。好吧，至少我可以在日历中提取约会，但我不能创建它们。不过，我可以在云帐户上创建约会。我会以某种方式解决这个问题。但至少我最终了解到问题不是代码，而是服务器端身份验证问题。
-
你用github上的最新版本测试了吗？ github.com/OfficeDev/ews-java-api
-
是微软团队的吗？
标签： java exchangewebservices ewsjavaapi