TCP
客户端
-
连接服务器Socket
-
发送消息
package com.shushu.net;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
//客户端
public class TcpClientDemo01 {
public static void main(String[] args) {
Socket socket = null;
OutputStream os = null;
try {
//1.要知道服务器的地址,端口号
InetAddress serverIP = InetAddress.getByName("127.0.0.1");
int port = 9999;
//2.创建一个socket连接
socket = new Socket(serverIP, port);
//3.发送消息IO流
os = socket.getOutputStream();
os.write("狂神说java".getBytes());
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally {
if (os!=null){
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (socket!=null){
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
服务器
-
建立服务的端口,ServerSocket
-
等待用户的连接 accept
-
接受用户的消息
package com.shushu.net;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class TcpServerDemo01 {
public static void main(String[] args) throws IOException {
//1.我们有一个地址
ServerSocket serverSocket = new ServerSocket(9999);
//2.等待客户端连接过来
Socket socket = serverSocket.accept();
//3.读取客服端信息
InputStream is = socket.getInputStream();
//管道流
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len=is.read(buffer))!=-1){
baos.write(buffer,0,len);
}
System.out.println(baos.toString());
if (baos!=null){
baos.close();
}
if (is!=null){
is.close();
}
if (socket!=null){
socket.close();
}
if (serverSocket!=null){
serverSocket.close();
}
}
}