本人是新手开始学习TCP编程：
如下是客户端的代码
```package Day23.Internet.TCP;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
//TCP的客户端
public class Demo1Client {
//TCP的客户端使用步骤
public static void main(String[] args) throws IOException {
//1.建立TCP的服务
Socket socket = new Socket(InetAddress.getLocalHost(), 60000);
//2.获取到对应的流对象（获取到Socket 的输出流对象）
OutputStream outputStream = socket.getOutputStream();
//3.利用输出流对案发把数据写出即可
outputStream.write("服务器你好".getBytes());
System.out.println("发送了！！");
outputStream.flush();
//4.关闭TCP服务
socket.close();
System.out.println("关闭了客户端！！");
}
}
以下是服务器的代码
```package Day23.Internet.TCP;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
//TCP的服务端
//使用ServerSocket
public class Demo1Server {
public static void main(String[] args) {
try {
// 1.建立TCP的服务端，并监听一个端口
ServerSocket serverSocket = new ServerSocket(60000);
// 2.获取输入溜对象，读取客户端发送的信息
//ServerSocket并没有下面的方法 但是Socket有呀
// serverSocket. getInputStream()
//可以先利用ServerSocet的accept方法获取连接到的Socket对象
Socket socket = serverSocket.accept();
System.out.println("hehe");
InputStream inputStream = socket.getInputStream();
byte[] buf = new byte[1024];
int length = inputStream.read(buf);
System.out.println(new String());
serverSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
运行起来后 报错如下（是客户端的问题）
Exception in thread "main" java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
