Java初级入门

网络编程TCP发送数据
import java.io.*;
import java.net.Socket;

public class ClientDome {
public static void main(String[] args) throws IOException {
//创建Socket对象,将其连接到主机指定的端口号上
Socket socket = new Socket(“192.168.24.60”,20000);

    //获取输出流的对象
    BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

    //读本地文件
    BufferedReader br = new BufferedReader(new FileReader("day14\ClentDome.java"));
    String lineDome;
    while ((lineDome= br.readLine())!=null){
        bw.write(lineDome);
        bw.newLine();
        bw.flush();
    }

    //告诉服务端已经发送完毕
    socket.shutdownOutput();

    //服务端相应客户端并给出反馈打印在控制台
    BufferedReader brClient = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    String data = brClient.readLine();
    System.out.println(data);

    //释放资源
    br.close();
    socket.close();
}

}
网络编程TCP接收数据
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerDome {
public static void main(String[] args) throws IOException {
//创建ServerSocket对象并绑定到指定端口
ServerSocket socket = new ServerSocket(20000);

    //监听要连接的客户端并接收
    Socket accept = socket.accept();

    //获取输入流的对象
    BufferedReader br = new BufferedReader(new InputStreamReader(accept.getInputStream()));

    //接收客户端的数据并写到文件
    BufferedWriter bw = new BufferedWriter(new FileWriter("day14\Copy.java"));
    String line;
    while ((line=br.readLine())!=null){
        bw.write(line);
        bw.newLine();
        bw.flush();
    }

    //客户端发送完毕,服务端给出响应,再次返回给客户端
    BufferedWriter bwServer = new BufferedWriter(new OutputStreamWriter(accept.getOutputStream()));
    bwServer.write("收到");
    bwServer.newLine();
    bwServer.flush();

    //释放资源
    bw.close();
    accept.close();
}

}