传输对象的会话[BIO] 生成代码 （一）抽象父类的编写代码 （二）完成接收器Receiver和发送器Sender类的编写代码 （三）完成工具类Utils的编写代码 （四）完成实体类Student类的编写代码 （五）完成客户端类和服务端类的编写代码 使用eclipse语言

在Java中创建一个基于BIO（Blocking Input/Output）模式的简单会话传输对象示例，我们首先需要定义几个关键类。以下是按照题目要求编写的步骤：

**（一）抽象父类**

// 抽象父类：SessionObject
abstract class SessionObject {
    protected String id;

    public SessionObject(String id) {
        this.id = id;
    }

    // 简化版的序列化和反序列化方法
    abstract byte[] serialize();
    abstract void deserialize(byte[] data);
}

**（二）接收器Receiver和发送器Sender类**

// 接收器Receiver
class Receiver extends SessionObject {
    private InputStream input;

    public Receiver(String id, InputStream in) {
        super(id);
        this.input = in;
    }

    @Override
    byte[] serialize() {
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(bos);
            oos.writeObject(this);
            return bos.toByteArray();
        } catch (IOException e) {
            throw new RuntimeException("Failed to serialize", e);
        }
    }

    @Override
    void deserialize(byte[] data) {
        try {
            ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(data));
            SessionObject receivedObject = ois.readObject();
            if (receivedObject instanceof Receiver) {
                Receiver receiver = (Receiver) receivedObject;
                this.input = receiver.input; // Assuming input is the same between objects
            }
        } catch (Exception e) {
            throw new RuntimeException("Failed to deserialize", e);
        }
    }
}

// 发送器Sender
class Sender extends SessionObject {
    private OutputStream output;

    public Sender(String id, OutputStream out) {
        super(id);
        this.output = out;
    }

    @Override
    byte[] serialize() {
        // ... 类似于Receiver的serialize方法
    }

    @Override
    void deserialize(byte[] data) {
        // ... 类似于Receiver的deserialize方法
    }

    public void send(SessionObject obj) {
        try {
            output.write(obj.serialize());
        } catch (IOException e) {
            throw new RuntimeException("Failed to send", e);
        }
    }
}

**（三）工具类Utils**

// 工具类Utils (简化版)
public class Utils {
    public static <T extends SessionObject> T deserializeFromStream(InputStream stream) {
        try {
            ObjectInputStream ois = new ObjectInputStream(stream);
            return (T) ois.readObject();
        } catch (Exception e) {
            throw new RuntimeException("Failed to deserialize from stream", e);
        }
    }

    // ... 其他辅助方法如文件操作等
}

**（四）实体类Student**

// 实体类Student
class Student extends SessionObject {
    private String name;

    public Student(String id, String name) {
        super(id);
        this.name = name;
    }

    // 为了演示序列化，添加getter和setter方法以及序列化方法
    // ...
}

**（五）客户端类和服务端类**

// 客户端类 Client
public class Client {
    public static void main(String[] args) {
        // 创建Socket连接或网络流
        Socket socket = new Socket("localhost", 9000);
        InputStream input = socket.getInputStream();
        OutputStream output = socket.getOutputStream();

        // 发送和接收对象
        Student student = new Student("client-id", "Alice");
        Sender sender = new Sender("sender-id", output);
        Receiver receiver = new Receiver("receiver-id", input);

        sender.send(student); // 发送到服务端

        // Service端类似，只是接收到数据后反序列化并处理
        // Student serverStudent = receiver.receive(); // 假设receive方法已实现
    }
}

// 服务端类 Server
public class Server {
    public static void main(String[] args) throws IOException {
        ServerSocket server = new ServerSocket(9000);
        while (true) {
            Socket clientSocket = server.accept();
            InputStream input = clientSocket.getInputStream();
            OutputStream output = clientSocket.getOutputStream();

            // 在循环内部处理每一个连接...
            // Receiver receiver = Utils.deserializeFromStream(input); // 解析输入流得到对象
            // 进行业务处理
        }
    }
}

请注意，上述代码只是一个基本框架，并未包含所有细节，比如错误处理、线程安全等问题，实际应用中还需要进一步完善。此外，`send` 和 `receive` 方法的具体实现取决于网络通信库（如Netty、Spring Websocket等）。