本地 Google Appengine 上的 JUnit 测试中的电子邮件正文为空

Question

我在带有 JDK 7_10 和 GAE Maven 插件的 Mac OS X 上使用 GAE API 1.7.3。

我的测试或多或少是从the documentation复制过来的：

    Properties props = new Properties();
    Session session = Session.getDefaultInstance(props, null);
    Message msg = new MimeMessage(session);
    msg.setFrom(new InternetAddress("admin@example.com", "Example.com Admin"));
    msg.addRecipient(Message.RecipientType.TO, new InternetAddress("user@example.com", "Mr. User"));
    msg.setSubject("Your Example.com account has been activated");
    msg.setText(".....");
    Transport.send(msg);

输出是：

Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO: MailService.send
Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO:   From: "Example.com Admin" <admin@example.com>
Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO:   To: "Mr. User" <user@example.com>
Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO:   Reply-to: "Example.com Admin" <admin@example.com>
Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO:   Subject: Your Example.com account has been activated
Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO:   Body:
Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO:     Content-type: text/plain
Dez 21, 2012 12:24:24 PM com.google.appengine.api.mail.dev.LocalMailService log
INFO:     Data length: 5

单元测试的初始化使用：

protected LocalServiceTestHelper helper = new LocalServiceTestHelper(new LocalMailServiceTestConfig());

真正奇怪的是，“Body”是空的，而“Data length”却是5（对应“.....”）。

这是正常的还是我在这里做错了什么？

[更新]如果我使用低级 API 也是一样的：

    MailService service = MailServiceFactory.getMailService();
    service.send(new MailService.Message(from, to, subject, text));

Answer 1

您在LocalMailServiceTestConfig 上给setLogMailBody(true) 打过电话吗？