如何验证 EWS Java API

我们正在使用 EWS Java API 在 Java 应用程序上使用 Outlook 日历。我在 EWS 上遇到身份验证问题。

我在机架空间提供的云 Outlook 帐户上尝试了该应用程序，一切正常，因此我知道凭据是准确的。

这是代码：

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("[email protected] /cdn-cgi/l/email-protection");
            msg.send();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}

机架空间的网址是：https://connect.emailsrvr.com/EWS/Exchange.asmx当我输入该帐户的用户名和密码并且它起作用时，我看到控制台输出以下内容：

Apr 05, 2013 1:40:28 PM org.apache.commons.httpclient.auth.AuthChallengeProcessor selectAuthScheme
INFO: NTLM authentication scheme selected

我们的客户使用的是 ExchangeVersion.Exchange2007_SP1，而 Rackspace 使用的是 ExchangeVersion.Exchange2010 但是当我使用我们的客户提供的凭据（用户名、密码和 url）时，我收到此错误：

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)

我找不到这个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？

我也遇到了和你一模一样的错误，并且浪费了 5 个小时来修复它。我的结论是，您不应该浪费更多时间来尝试让 EWS 代码库正常工作，EWS 代码很混乱，您必须深入了解该库中的错误。

我决定使用 javax.mail 实现来满足我的需要。https://stackoverflow.com/a/18043717/445131 https://stackoverflow.com/a/18043717/445131