java.net.SocketException套接字已关闭

我正在将客户端的对象发送到服务器，在服务器端修改该对象并将其重新发送到客户端。将对象从客户机发送到服务器是正常的，它工作正常，但当我将对象发送回服务器时，它给出了异常套接字关闭。这是代码。 IntString和ParentObj是我正在发送对象的类

import java.io.*;
import java.net.*;

public class Send_recv {
    Socket s;
    IntString obj1;

    public Send_recv(Socket s) {
        this.s = s;
    }

    public void sendObj(ParentObj obj) {
        try {
            OutputStream os = s.getOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(os);
            oos.writeObject(obj);
            oos.close();
            os.close();
        } catch (Exception e) {
            System.out.println(e);
        }
    }

    public ParentObj recObj() {

        try {
            InputStream is = s.getInputStream();
            ObjectInputStream ois = new ObjectInputStream(is);
            obj1 = (IntString) ois.readObject();
            ois.close();
            is.close();

        } catch (Exception e) {
            System.out.println(e);
        }
        return (obj1);
    }
}

客户1类：

import java.net.*;
import java.io.*;

public class Client1 {
    public static void main(String args[]) {
        int arr[] = new int[10];
        int length = 6, i, counter_1;
        ParentObj obj1;
        for (i = 0; i < length; i++) {
            arr[i] = i + 10;
        }
        try {
            Socket s = new Socket("localhost", 6789);
            IntString obj = new IntString(arr, length);
            /*
             * OutputStream os = s.getOutputStream(); 
             * ObjectOutputStream oos = new ObjectOutputStream(os);
             * 
             * oos.writeObject(obj); 
             * oos.close(); 
             * os.close();
             */
            Send_recv snd = new Send_recv(s);
            snd.sendObj((ParentObj) obj);

            if (s.isClosed()) {
                System.out.println("Closed");
                // s.connect(null);
            }
            obj1 = snd.recObj();
            obj = (IntString) obj1;
            if (obj != null) {
                for (counter_1 = 0; counter_1 < obj.length_of_row; counter_1++) {
                    System.out.println(obj.row[counter_1]);
                    obj.row[counter_1]++;
                }
            }

            // s.close();

        } catch (Exception e) {
            System.out.println(e);
        }
    }
}

此异常意味着您关闭了套接字，然后继续尝试使用它

os.close();

---

你把它关在这里了。关闭

套接字的输入流或输出流

将关闭另一个流和

套接字。

谢谢您的帮助。

java.net.SocketException socket is closed

os.close();