实验7 .....\test1 .....\.....\IpName.java .....\test2 .....\.....\pageSize.java .....\test3 .....\.....\Client.java .....\.....\Server.java .....\test4 .....\.....\Chating.java .....\test5 .....\.....\Exchange.java .....\.....\Fun.java .....\.....\Receive.java