要求：

基于TCP协议实现，客服端向服务器发送一个对象服务器接受并显示用户信息 ，同时返回给客户端 "数据已收到"建一个Student类，属性：name age

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Student类

package Homework3;import java.io.Serializable;public class Student implements Serializable {
         private static final long serialVersionUID = 1L;    private String name;    private int age;    private String sex;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getSex() {        return sex;    }    public void setSex(String sex) {        this.sex = sex;    }    @Override    public String toString() {        return "Student [name=" + name + ", age=" + age + ", sex=" + sex + "]";    }    public Student(String name, int age, String sex) {        super();        this.name = name;        this.age = age;        this.sex = sex;    }    public Student() {        super();    }}

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客户端：

package Homework3;import java.io.IOException;import java.io.InputStream;import java.io.ObjectOutputStream;import java.io.OutputStream;import java.net.Socket;public class Client {    public static void main(String[] args) {        System.out.println("客户端已启动！");        //1.创建要传输的Student对象        Student student=new Student("吴德利", 30, "女");        Socket socket=null;        OutputStream os=null;        InputStream is=null;        ObjectOutputStream oos=null;        byte[] b=new byte[1024];        try {            //2.创建Socket对象，并得到相应的输出流----以及创建对象流            socket=new Socket("localhost", 9999);            os=socket.getOutputStream();            oos=new ObjectOutputStream(os);            //3.将对象发送给服务器            oos.writeObject(student);            //4.接收服务器端传输完毕，返回的回复            is=socket.getInputStream();            is.read(b);            String string=new String(b);            System.out.println(string);        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }finally {            if(os!=null){                try {                    os.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if(is!=null){                try {                    is.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if(socket!=null){                try {                    socket.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if(oos!=null){                try {                    oos.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        }    }}

服务器端：

package Homework3;import java.io.IOException;import java.io.InputStream;import java.io.ObjectInputStream;import java.io.OutputStream;import java.net.ServerSocket;import java.net.Socket;public class Server {    public static void main(String[] args) {        System.out.println("服务器端已启动！");        ServerSocket serverSocket=null;        Socket socket=null;        ObjectInputStream ois=null;        OutputStream os=null;        InputStream is=null;        try {            //1.创建ServerSocket对象，获得Socket对象以及输入            serverSocket=new ServerSocket(9999);            socket=serverSocket.accept();            is=socket.getInputStream();            //2.创建对象流            ois=new ObjectInputStream(is);            //3.接收数据，并将接收的对象转为原来的对象类型            Student student=(Student)ois.readObject();            System.out.println(student);            //4.返回给客户端，"数据已收到"            os=socket.getOutputStream();            os.write("数据已收到".getBytes());            os.flush();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (ClassNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }finally{            if(serverSocket!=null){                try {                    serverSocket.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if(socket!=null){                try {                    socket.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if(os!=null){                try {                    os.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if(is!=null){                try {                    is.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if(ois!=null){                try {                    ois.close();                } catch (IOException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        }    }}

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运行结果：

客户端：

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服务器端：