// 写一个方法,让它显示消息 public void show_message(MessageShare message_from_server) { String chat_info = message_from_server.get_sender() + " 对 " + message_from_server.get_receiver() + " 说:" + message_from_server.get_content() + "\r\n"; this.chat_history_text_area.append(chat_info); }