Java ，microsoft.exchange.webservices.data.core.exception.service.remote.ServiceRequestException:请求失败。无效的 private静态字符串url=”https://myemail.com/ews/exchange.asmx"; 私有静态字符串用户名=”user@email.com"; 专用静态字符串密码=”user@123"; 私有静态字符串domain=“Dir”； 公务舱服务{ ExchangeService ExchangeService=null； exchangeService=新的exchangeService（ExchangeVersion.Exchange2007_SP1）； setUrl（新的URI（EmailService.url））； ExchangeCredentials凭据=新的WebCredentials（用户名、密码、域）； exchangeService.setCredentials（凭证）； FindItemsResults=null； 试一试{ 字符串getFolderId=null； 文件夹根文件夹= Folder.bind（服务，WellKnownFolderName.MsgFolderRoot）； rootfolder.load（）； } }

我正在尝试使用上面的代码连接到web服务器，我得到的异常是， microsoft.exchange.webservices.data.core.exception.service.remote.ServiceRequestException:请求失败。连接仍在分配中

    private static String url ="https://myemail.com/ews/exchange.asmx";
    private static String username="user@email.com";
    private static String password="user@123";
    private static String domain="Dir";
    public class service{
    ExchangeService exchangeService = null;
    exchangeService = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
    exchangeService.setUrl(new URI(EmailService.url));
    ExchangeCredentials credentials = new WebCredentials(username, password,domain);
    exchangeService.setCredentials(credentials);
    FindItemsResults<Item> results = null;
    try {
        String getFolderId = null;
        Folder rootfolder = 
        Folder.bind(service,WellKnownFolderName.MsgFolderRoot);
        rootfolder.load();
    }
    }