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如何將我的Java應用程序配置爲使用帶有TLS的端口993從IMAP郵箱讀取郵件。如何配置「imaps」接收郵件？ JavaMail
我將我的郵件服務器的證書存儲在默認的javakeystore cacerts中。 嘗試連接到郵箱後。我得到這個堆棧跟蹤（這是一個完整跟蹤）：
javax.mail.MessagingException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty;
nested exception is:
javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:670)
at javax.mail.Service.connect(Service.java:317)
at javax.mail.Service.connect(Service.java:176)
at javax.mail.Service.connect(Service.java:125)
at imap.IMAP.receive(IMAP.java:77)
at imap.IMAP.main(IMAP.java:46)
Caused by: javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:190)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1764)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1725)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1708)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1237)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1214)
at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:548)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:352)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:207)
at com.sun.mail.iap.Protocol.<init>(Protocol.java:113)
at com.sun.mail.imap.protocol.IMAPProtocol.<init>(IMAPProtocol.java:111)
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:637)
... 5 more
Caused by: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
at sun.security.validator.PKIXValidator.<init>(PKIXValidator.java:57)
at sun.security.validator.Validator.getInstance(Validator.java:161)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.getValidator(X509TrustManagerImpl.java:108)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:204)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:249)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1185)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:136)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:593)
at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:529)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:958)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1203)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1230)
... 12 more
Caused by: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
at java.security.cert.PKIXParameters.setTrustAnchors(PKIXParameters.java:183)
at java.security.cert.PKIXParameters.<init>(PKIXParameters.java:103)
at java.security.cert.PKIXBuilderParameters.<init>(PKIXBuilderParameters.java:87)
at sun.security.validator.PKIXValidator.<init>(PKIXValidator.java:55)
... 23 more
15.03.2013 13:54:50 imap.IMAP main
SCHWERWIEGEND: null
java.lang.NullPointerException
at imap.IMAP.receive(IMAP.java:123)
at imap.IMAP.main(IMAP.java:46)
這是我的proporties：
System.setProperty("javax.net.ssl.trustStore", "/usr/java/jdk_1.6.0_35/jre/lib/security/cacerts");
System.setProperty("javax.net.ssl.trustStorePassword", "changeit");
Properties props = System.getProperties();
props.setProperty("mail.imaps.host", server);
props.setProperty("mail.imaps.user", user);
props.setProperty("mail.imaps.password", password);
props.setProperty("mail.imaps.auth", "true");
props.setProperty("mail.imaps.starttls.enable", "true");
props.setProperty("mail.imaps.socketFactory.port", "993");
props.setProperty("mail.imaps.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.setProperty("mail.imaps.socketFactory.fallback", "false");
MailAuthenticator auth = new MailAuthenticator(user, password);
Session session = Session.getDefaultInstance(props, auth);
store = session.getStore("imaps");
store.connect();
是缺少點什麼？在互聯網上有很多關於這個問題的文章。但最重要的是SMTP。我還沒有找到真正解釋的東西，你真的需要哪些屬性來獲得這個案例的工作。
我希望有人能幫我找到我的錯誤。
非常感謝。