XMPP 注销（Smack API）

Question

我正在使用 Smack API 连接到 Openfire 服务器。我已成功创建用户和登录用户，我的问题是我无法使用XMPPConnection.disconnect() 进行注销，此后，在创建帐户或登录另一个用户时，显示以下错误。有人在这种情况下使用过 Smack API 吗？

应用程序在尝试登录同一用户或其他用户时收到此错误：

java.net.SocketException: Socket closed
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream.java:146)
    at sun.security.ssl.InputRecord.readFully(InputRecord.java:312)
    at sun.security.ssl.InputRecord.read(InputRecord.java:350)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:818)
    at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:775)
    at sun.security.ssl.AppInputStream.read(AppInputStream.java:94)
    at com.jcraft.jzlib.ZInputStream.read(ZInputStream.java:94)
    at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:282)
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:324)
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:176)
    at java.io.InputStreamReader.read(InputStreamReader.java:184)
    at java.io.BufferedReader.fill(BufferedReader.java:153)
    at java.io.BufferedReader.read1(BufferedReader.java:204)
    at java.io.BufferedReader.read(BufferedReader.java:278)
    at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:2992)
    at org.xmlpull.mxp1.MXParser.more(MXParser.java:3046)
    at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1144)
    at org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
    at org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:325)
    at org.jivesoftware.smack.PacketReader.access$000(PacketReader.java:43)
    at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:70)
java.io.IOException: Stream closed
    at java.io.BufferedWriter.ensureOpen(BufferedWriter.java:115)
    at java.io.BufferedWriter.write(BufferedWriter.java:220)
    at java.io.Writer.write(Writer.java:157)
    at org.jivesoftware.smack.PacketWriter.writePackets(PacketWriter.java:192)
    at org.jivesoftware.smack.PacketWriter.access$000(PacketWriter.java:40)
    at org.jivesoftware.smack.PacketWriter$1.run(PacketWriter.java:76)
Exception in thread "Smack Packet Reader (0)" java.lang.NullPointerException
    at org.jivesoftware.smack.XMPPConnection.shutdown(XMPPConnection.java:380)
    at org.jivesoftware.smack.PacketReader.notifyConnectionError(PacketReader.java:166)
    at org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:332)
    at org.jivesoftware.smack.PacketReader.access$000(PacketReader.java:43)
    at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:70)

Answer 1

在第二次尝试登录之前尝试再次调用connect：一旦调用disconnect 注销，实际的套接字就会关闭。 connect 应该重新打开它。