smack.jar文件分发文件夹是唯一的XMPP功能嵌入到客户端应用程序所需的二进制文件。smackx.jar包含Smack的扩展，而smackx-debug.jar包含增强的调试。-The smack.jar file in the main distribution folder is the only binary file required for embedding XMPP functionality into client applications. The optional sm