java socket example

最新推荐文章于 2022-01-10 15:14:19 发布

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本文介绍了一个使用 Java 实现的 Socket 通信示例，包括客户端和服务端代码。该示例通过序列化传递 Message 对象，展示了如何进行双向的数据交换。

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ObjectServer.java


import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class ObjectServer {

	public static int PORT = 8080;
	public static void main(String[] agrs) {
		ServerSocket s = null;
		Socket socket = null;
		ObjectOutputStream oos = null;
		ObjectInputStream ois = null;
		try {
			s = new ServerSocket(PORT);
			System.out.println("ServerSocket Start:"+s);
			socket = s.accept();
			System.out.println("Connection accept socket:"+socket);
			ois = new ObjectInputStream(socket.getInputStream());
			Message message = (Message)ois.readObject();
			System.out.println(message.toString());
			message.setContent("client received");
			oos = new ObjectOutputStream(socket.getOutputStream());
			oos.writeObject(message);
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			try {
				ois.close();
				oos.close();
				socket.close();
				s.close();
			} catch (Exception e2) {

			}
		}
	}
}

ObjectClient.java


import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.Socket;

public class ObjectClient {

	public static void main(String[] args) {
		Socket socket = null;
		ObjectOutputStream oos = null;
		ObjectInputStream ois = null;
		try {
			socket = new Socket("127.0.0.1", ObjectServer.PORT);
			System.out.println("Socket=" + socket);
			Message message = new Message("1", "Client sent");
			oos = new ObjectOutputStream(socket.getOutputStream());
			oos.writeObject(message);
			ois = new ObjectInputStream(socket.getInputStream());
			message = (Message)ois.readObject();
			System.out.println(message.toString());
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				ois.close();
				oos.close();
				socket.close();
			} catch (Exception e2) {

			}
		}
	}

}

Message.java


import java.io.Serializable;
the object should be serializable for socket transfer
public class Message implements Serializable{

	private static final long serialVersionUID = 1L;

	private String id;

	private String content;

	public Message(String id, String content){
		this.id = id;
		this.content = content;
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}

	public String toString(){
		return "id = " + id + " content = " + content;
	}
}