我一直在研究從動態Web應用程序中提取信息的程序，該程序運行良好，直到我將tomcat服務器設置為使用自簽名（因此，不受信任）證書使用SSL為止。錯誤的堆棧跟蹤為：javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested targetError: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target        at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:150)        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1584)        at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:174)        at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:168)        at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:848)        at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:106)        at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:495)        at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:433)        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:877)        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1089)        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1116)        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1100)        at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:402)        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:170)        at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:857)在Web瀏覽器中，當用戶使用不受信任的證書訪問HTTPS站點時，系統會提示用戶警告，并要求他設置是否愿意繼續進行操作；我想為我的命令行應用程序實現類似的功能...我承認我是套接字編程和網絡領域的新手。解決這個問題的任何建議都會很棒！