无法访问GreenMail收到的电子邮件的属性

Question

我正在尝试将GreenMail用作用于单元测试的模型邮件服务器。 它的工作是等待IMAP / POP3请求并发送虚拟邮件，但我无法使其正常工作。

public class EMailMonitoringTest {
private static final String USER_PASSWORD = "test";
private static final String USER_NAME = "jDownloaderTestUser";
private static final String EMAIL_USER_ADDRESS = "jdtest@localhost";
private static final String EMAIL_TO = "someone@localhost.com";
private static final String EMAIL_SUBJECT = "Test E-Mail";
private static final String EMAIL_TEXT = "This is a test e-mail.";
private static final String LOCALHOST = "127.0.0.1";
private GreenMail mailServer;

@Before
public void setUp() {
    mailServer = new GreenMail(ServerSetupTest.ALL);
    mailServer.start();
}

@After
public void tearDown() {
    mailServer.stop();
}

@Test
public void getMails() throws AddressException, MessagingException, FolderException, UserException, IOException {
    // create user on mail server
    GreenMailUser user = mailServer.setUser(EMAIL_USER_ADDRESS, USER_NAME, USER_PASSWORD);

    // create an e-mail message using javax.mail ..
    MimeMessage message = new MimeMessage((Session) null);
    message.setFrom(new InternetAddress(EMAIL_TO));
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(EMAIL_USER_ADDRESS));
    message.setSubject(EMAIL_SUBJECT);
    message.setText(EMAIL_TEXT);

    // use greenmail to store the message
    user.deliver(message);

    // check received messages
    Message[] messages = mailServer.getReceivedMessages();
    for (Message m : messages) {
        System.out.println("*** Class: " + m.getClass() + " ***");
        System.out.println("From: " + m.getFrom()[0]);
        System.out.println("To: " + m.getRecipients(Message.RecipientType.TO)[0]);
        System.out.println("Subject: " + m.getSubject());
        System.out.println("Content: " + m.getContent());
    }

没问题，到目前为止的输出是这样的：

**类：类javax.mail.internet.MimeMessage **

来自：someone@localhost.com

到：jdtest @ localhost

主题：测试电子邮件

内容：这是一封测试电子邮件。

之后，我尝试从GreenMail IMAP服务器获取邮件：

    // fetch the e-mail via imap using javax.mail ..
    Properties props = new Properties();
    Session session = Session.getInstance(props);
    URLName urlName = new URLName("imap", LOCALHOST,
    ServerSetupTest.IMAP.getPort(), null, user.getLogin(),
    user.getPassword());
    Store store = session.getStore(urlName);
    store.connect();

    Folder folder = store.getFolder("INBOX");
    folder.open(Folder.READ_ONLY);
    messages = folder.getMessages();
    System.out.println("Size of Messages: " + messages.length);
    for (Message m : messages) {
        System.out.println("** Class: " + m.getClass() + " **");
        System.out.println("From: " + m.getFrom()[0].toString());
        System.out.println("To: " + m.getRecipients(Message.RecipientType.TO)[0].toString());
        System.out.println("Subject: " + m.getSubject().toString());
        System.out.println("Content: " + m.getContent().toString());
    }

我对此的奖励是

讯息大小：1

**类：com.sun.mail.imap.IMAPMessage类**

和FolderClosedException：

javax.mail.FolderClosedException：* BYE JavaMail异常：com.sun.mail.imap.IMAPMessage.getFrom（IMAPMessage.com.sun.mail.imap.IMAPMessage.loadEnvelope（IMAPMessage.java:1217）上的java.io.IOException。 java：252）位于jd.controlling.EMailMonitoringTest.test（EMailMonitoringTest.java:85）位于sun.reflect.NativeMethodAccessorImpl.invoke0（本地方法）位于sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57） .org的java.lang.reflect.Method.invoke（Method.java:601）处的org.junit.runners.model.FrameworkMethod $ 1.runReflectiveCall（FrameworkMethod.java:44）处的.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43） org.junit.runners.model.FrameworkMethod.invokeExplosively（frameworkMethod.java:41）上的.junit.internal.runners.model（ReflectiveCallable.java:15）在org.junit.internal.runners.statements.InvokeMethod上在org.junit.internal.runners.statements.RunBefores.evaluate（RunBefores.java:28）处.evaluate（InvokeMethod.java:20） rg.junit.internal.runners.statements.RunAfters.evaluate（RunAfters.java:31）在org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored（BlockJUnit4ClassRunner.java:79）在org.junit.runners.BlockJUnit4Runner.runChild（BlockJUnit4Class java：71）org.junit.runners.BlockJUnit4ClassRunner.runChild（BlockJUnit4ClassRunner.java:49）at org.junit.runners.ParentRunner $ 3.run（ParentRunner.java:193）at org.junit.runners.ParentRunner $ 1.schedule （ParentRunner.java:52）在org.junit.runners.ParentRunner.runChildren（ParentRunner.java:191）在org.junit.runners.ParentRunner.access $ 000（ParentRunner.java:42）在org.junit.runners.ParentRunner在org.junit.runners处的$ 2.evaluate（ParentRunner.java:184）在org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:50）处的ParentRunner.run（ParentRunner.java:236）在org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）在org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:467） 在org.eclipse.org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:390）处org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:683） .jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:197）

尝试访问folder.getMessage（0）只会导致IndexOutOfBoundsException，但是在数组中存储了一个IMAPMessage类的Message。 有人知道吗？

是的，我在hashCode上尝试了示例，但是它们也由于相同的原因而失败...访问接收到的IMAP消息的属性时出现FolderClosedException ...

非常感谢您接受任何提示。

Answer 1

使用IMAP时，可以配置LOCALHOST，但在启动/创建GreenMail时不要告诉GreenMail使用LOCALHOST。

使用GreenMail服务器ServerSetupTest.IMAP.getBindAddress（）的绑定地址代替LOCALHOST ：

// fetch the e-mail via imap using javax.mail ..
// Hint: Create session via GreenMailUtil
Session session = GreenMailUtil.getSession(ServerSetupTest.IMAP);
// Use configured host address instead of supplying a 
URLName urlName = new URLName("imap", ServerSetupTest.IMAP.getBindAddress(),
   ServerSetupTest.IMAP.getPort(), null, user.getLogin(),
   user.getPassword());
Store store = session.getStore(urlName);
store.connect();`