// 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);
}
