如何通过ExchangeWebServices Java类和OAuth对Microsoft进行身份验证？

Question

我有一个工作的Java程序通过ExchangeWebServices Java类访问Microsoft，现在过期了基本身份验证。

我想要将身份验证方法更改为com.microsoft.aad.msal4j). (包)。

我找到了如何生成ConfidentialClientApplication，然后使用它获取令牌(IAuthenticationResult)的示例。

但是，我不知道如何从OAuth令牌中创建ExchangeCredentials，因为下面的行没有编译，因为ExchangeWebServices中没有类OAuthCredentials

ExchangeCredentials credentials = new OAuthCredentials(authResult.AccessToken); 

对于Basic，我可以简单地使用以下代码：

ExchangeService     service     = new ExchangeService(ExchangeVersion.Exchange2010_SP2);
ExchangeCredentials credentials = new WebCredentials(<user>,<password>);
service.setCredentials(credentials);
service.setUrl(new URI(<Exchange_URI>));

现在，对于oauth的msal4j，我开始如下(除了最后2行之外，在其他地方找到的例子)：

IClientCredential credential = ClientCredentialFactory.createFromSecret(context.Exchange_AzureClientSecret);
ConfidentialClientApplication cca =
        ConfidentialClientApplication
                .builder(<Exchange_AzureClientId>, credential)
                .authority(<Exchange_Authority>)
                .build();
IAuthenticationResult authResult;
Set<String> scope = Collections.singleton("https://outlook.office365.com/.default");
     try {
         SilentParameters silentParameters =
                 SilentParameters
                         .builder(scope)
                         .build();
         // try to acquire token silently. This call will fail since the token cache does not
         // have a token for the application you are requesting an access token for
         authResult = cca.acquireTokenSilently(silentParameters).join();
     } catch (Exception ex) {
         if (ex.getCause() instanceof MsalException) {
             ClientCredentialParameters parameters =
                     ClientCredentialParameters
                             .builder(scope)
                             .build();
             // Try to acquire a token. If successful, you should see
             // the token information printed out to console
             authResult = cca.acquireToken(parameters).join();
         } else {
             // Handle other exceptions accordingly
             throw ex;
         }
     }
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010_SP2);
ExchangeCredentials credentials = new OAuthCredentials(authResult.AccessToken);
//...

如何从ExchangeCredentials令牌中创建OAuth (此处命名为authResult)？

Answer 1

官方Java托管API不再由微软更新或维护，也不支持oAuth。它的开放源码和一些人已经分叉了它，并在https://github.com/OfficeDev/ews-java-api/issues?q=is%3Aissue+is%3Aopen+oauth中添加了这种支持。

https://github.com/bookaroom/RESTApi/blob/master/src/com/comeet/exchange/BearerTokenCredentials.java