无法检索联系人的电话号码

Question

即使某些联系人有电话号码，以下Java方法也无法检索它们。电子邮件地址也是如此。

public String displayOne(String contactId) throws IOException, ServiceException {
    String output = "";
    contactId = contactId.replaceAll("base", "full");
    ContactEntry contact = service.getEntry(new URL(contactId),ContactEntry.class);
    Name name = contact.getName();
    FullName fullName = name.getFullName();

    output += "Contact details of <b>"+fullName.getValue()+"</b> <br/>";

    java.util.List<PhoneNumber> phoneNumbers = contact.getPhoneNumbers();
    for (PhoneNumber pn : phoneNumbers) {
        output += pn.getPhoneNumber()+"<br/>";
    }

    output += "<br/><br/>";

    java.util.List<Email> emails = contact.getEmailAddresses();
    for(Email email : emails) {
        output += email.getAddress()+"<br/>";
    }

    return output;
}

有什么想法吗？