Question

我正在使用Smack和Openfire服务器作为聊天客户端，所有工作都很好，如聊天，发送新用户的邀请，获取可用用户列表等。当我尝试发送时遇到ClassCastException错误使用下面的代码从Android客户端到另一个用户的文件，它给了我一堆错误。

ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
if (sdm == null)
sdm = new ServiceDiscoveryManager(connection);
sdm.addFeature("http://jabber.org/protocol/disco#info");
sdm.addFeature("jabber:iq:privacy");
fileTransfer(fileName, recepient.getText().toString() + "/Spark 2.6.3");

public void fileTransfer(String fileName, String destination) throws XMPPException   {

        FileTransferNegotiator.setServiceEnabled(connection,true);
        OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer(destination);
        transfer.sendFile(new File(fileName), "You won't believe this!");
        try {
            Thread.sleep(10000);
        }
        catch(Exception e){
            Toast.makeText(getActivity(), "Exception " + e, Toast.LENGTH_LONG).show();
        }
        System.out.println("Status :: " + transfer.getStatus() + " Error :: " + transfer.getError() + " Exception :: " + transfer.getException());
        System.out.println("Is it done? " + transfer.isDone());
        Toast.makeText(getActivity(), "Status :: " + transfer.getStatus() + " Error :: " + transfer.getError() + " Exception :: " + transfer.getException(), Toast.LENGTH_LONG).show();
        Log.v("ONMESSAGE", "Status :: " + transfer.getStatus() + " Error :: " + transfer.getError() + " Exception :: " + transfer.getException());
    }

当我尝试发送文件时，它会显示在另一端的火花然而当点击＆＃34;接受＆＃34;时，不会启动文件传输，而是显示＆＃34;传输文件时出错＆＃34;。

在错误日志中，它显示以下错误：

07-25 12:08:22.393: E/AndroidRuntime(27708): java.lang.ClassCastException: org.jivesoftware.smack.PacketReader$4 cannot be cast to org.jivesoftware.smackx.packet.StreamInitiation
07-25 12:08:22.393: E/AndroidRuntime(27708):    at org.jivesoftware.smackx.filetransfer.FileTransferNegotiator.negotiateOutgoingTransfer(FileTransferNegotiator.java:401)
07-25 12:08:22.393: E/AndroidRuntime(27708):    at org.jivesoftware.smackx.filetransfer.OutgoingFileTransfer.negotiateStream(OutgoingFileTransfer.java:300)
07-25 12:08:22.393: E/AndroidRuntime(27708):    at org.jivesoftware.smackx.filetransfer.OutgoingFileTransfer.access$100(OutgoingFileTransfer.java:35)
07-25 12:08:22.393: E/AndroidRuntime(27708):    at org.jivesoftware.smackx.filetransfer.OutgoingFileTransfer$2.run(OutgoingFileTransfer.java:214)
07-25 12:08:22.393: E/AndroidRuntime(27708):    at java.lang.Thread.run(Thread.java:838)

N.B。：我正在使用Smack Library。

Answer 1

将以下方法添加到您的班级。

public void configure(ProviderManager pm) {   

    pm.addIQProvider("query", "jabber:iq:private",

            new PrivateDataManager.PrivateDataIQProvider());

    try {

        pm.addIQProvider("query", "jabber:iq:time",

                Class.forName("org.jivesoftware.smackx.packet.Time"));

    } catch (ClassNotFoundException e) {

        Log.w("TestClient",

                "Can't load class for org.jivesoftware.smackx.packet.Time");

    }
    pm.addExtensionProvider("x", "jabber:x:roster",

            new RosterExchangeProvider());
    pm.addExtensionProvider("x", "jabber:x:event",

            new MessageEventProvider());
    pm.addExtensionProvider("active",

            "http://jabber.org/protocol/chatstates",

            new ChatStateExtension.Provider());
    pm.addExtensionProvider("composing",

            "http://jabber.org/protocol/chatstates",

            new ChatStateExtension.Provider());
    pm.addExtensionProvider("paused",

            "http://jabber.org/protocol/chatstates",

            new ChatStateExtension.Provider());

    pm.addExtensionProvider("inactive",

            "http://jabber.org/protocol/chatstates",

            new ChatStateExtension.Provider());
    pm.addExtensionProvider("gone",

            "http://jabber.org/protocol/chatstates",

            new ChatStateExtension.Provider());
    pm.addExtensionProvider("html", "http://jabber.org/protocol/xhtml-im",

            new XHTMLExtensionProvider());

    pm.addExtensionProvider("x", "jabber:x:conference",

            new GroupChatInvitation.Provider());
    pm.addIQProvider("query", "http://jabber.org/protocol/disco#items",
            new DiscoverItemsProvider());

    pm.addIQProvider("query", "http://jabber.org/protocol/disco#info",

            new DiscoverInfoProvider());
    pm.addExtensionProvider("x", "jabber:x:data", new DataFormProvider());
    pm.addExtensionProvider("x", "http://jabber.org/protocol/muc#user",
            new MUCUserProvider());
    pm.addIQProvider("query", "http://jabber.org/protocol/muc#admin",
            new MUCAdminProvider());

    pm.addIQProvider("query", "http://jabber.org/protocol/muc#owner",
            new MUCOwnerProvider());
    pm.addExtensionProvider("x", "jabber:x:delay",
            new DelayInformationProvider());
    try {

        pm.addIQProvider("query", "jabber:iq:version",

                Class.forName("org.jivesoftware.smackx.packet.Version"));

    } catch (ClassNotFoundException e) {

        // Not sure what's happening here.

    }
    pm.addIQProvider("vCard", "vcard-temp", new VCardProvider());
    pm.addIQProvider("offline", "http://jabber.org/protocol/offline",

            new OfflineMessageRequest.Provider());
    pm.addExtensionProvider("offline","http://jabber.org/protocol/offline",new OfflineMessageInfo.Provider());
    pm.addIQProvider("query", "jabber:iq:last", new LastActivity.Provider());
    pm.addIQProvider("query", "jabber:iq:search", new UserSearch.Provider());
    pm.addIQProvider("sharedgroup","http://www.jivesoftware.org/protocol/sharedgroup",new SharedGroupsInfo.Provider());
    pm.addExtensionProvider("addresses","http://jabber.org/protocol/address",new MultipleAddressesProvider());
    pm.addIQProvider("si", "http://jabber.org/protocol/si",new StreamInitiationProvider());
    pm.addIQProvider("query", "http://jabber.org/protocol/bytestreams",
            new BytestreamsProvider());
    pm.addIQProvider("query", "jabber:iq:privacy", new PrivacyProvider());

}

就在调用connect函数之前。用这样的方法调用方法。

configure(ProviderManager.getInstance());

ClassCastException：org.jivesoftware.smack.PacketReader $ 4在传输文件时无法转换为org.jivesoftware.smackx.packet.StreamInitiation

1 个答案: