在 java Socket应用的 3-4节 我把老师的代码修改了一下可以手动输入文字让对面的服务器/客户端接受，
下面是代码：
//客户端
package 通讯;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.net.Socket;
import java.util.Scanner;
public class client {
public static void main(String[] args) {
try {
Socket socket = new Socket("127.0.0.1", 8885);
while (true) { //死循环重复步骤
OutputStream os = socket.getOutputStream();
PrintStream bw = new PrintStream(os);
Scanner input = new Scanner(System.in);
System.out.println("你想对对面的服务器说些什么");
bw.print(input.next());//从键盘输入读取一行 打印到输出流
bw.flush();
socket.shutdownOutput();
InputStream is = socket.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String s;
while ((s = br.readLine()) != null) {
System.out.println("服务器端说：" + s);
}
socket.shutdownInput();
br.close();
isr.close();
is.close();
bw.close();
os.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
//服务器端
package 通讯;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
public class server {
public static void main(String[] args) {
try {
ServerSocket serversocket = new ServerSocket(8885);
System.out.println("正在等待连接。。。。。。。");
Socket socket = serversocket.accept();
while(true){//死循环重复
InputStream is = socket.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String s;
while ((s = br.readLine()) != null) {
System.out.println("客户端说" + s);
}
socket.shutdownInput();
OutputStream os = socket.getOutputStream();
PrintStream bw = new PrintStream(os);
Scanner input = new Scanner(System.in);
System.out.println("你想对面的客户机说些什么");
bw.print(input.next());//从键盘输入读取一行打印到输出流
bw.flush();
socket.shutdownOutput();
bw.close();
os.close();
br.close();
isr.close();
is.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
没加while死循环之前是，服务器等待请求，客户端发送一行文字，服务器接受后再发一行文字回去，程序结束。之后我又加了两个while死循环希望它能一直重复互发消息的步骤，但是出现了如下的异常，代码应该怎么修改才能实现我想要的不停的互发消息呢？
