用TCP编写的chat_server和chat_client，一定要先运行chat_server，再运行chat_client，否则会出错。不必要一方一次说一句，一方可以连续说多句。用byte[],能显示汉字。-prepared by using TCP chat_server and chat_client, you must first run chat_server, re-running chat_client, otherwise they will be wrong. Unneces