我使用SSL连接将Web客户端连接到服务器.它长时间没有任何问题.但从昨天起,它给出了以下错误,任何人都可以告诉我原因.
javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.checkEOF(SSLSocketImpl.java:1172)
at com.sun.net.ssl.internal.ssl.AppInputStream.read(AppInputStream.java:65)
at net.schubart.fixme.internal.MessageInput.readExactly(MessageInput.java:166)
at net.schubart.fixme.internal.MessageInput.readMessage(MessageInput.java:78)
at cc.aot.itsWeb.ClientWriterThread.run(ClientWriterThread.java:241)
at java.lang.Thread.run(Thread.java:619)
clientWriter.ready
Caused by: javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:136)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:1586)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:865)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1029)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:621)
at com.sun.net.ssl.internal.ssl.AppOutputStream.write(AppOutputStream.java:59)
at java.io.OutputStream.write(OutputStream.java:58)
at net.schubart.fixme.internal.Message.write(Message.java:267)
at net.schubart.fixme.internal.MessageOutput.writeMessage(MessageOutput.java:53)