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这与用于JavaMail的Google App Engine代码几乎相同。 Linkjavax.mail.Session构造函数“不可见”
它给出了一个Session构造函数不可见的错误。其他进口看起来很好,为什么会出现Session?
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.api.datastore.DatastoreService;
import com.google.appengine.api.datastore.DatastoreServiceFactory;
import java.util.Properties;
import javax.mail.Session;
import javax.mail.Message;
import javax.mail.Transport;
import javax.mail.MessagingException;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
Properties props = new Properties();
Session session = new Session(props, null);