网站建设项目概况,网站的层次,专门做国外网站,贸易公司取什么名字Sockct:插座Socket是关于TCP的。
端口号#xff1a;两个字节-65536个端口号#xff0c;一个应用程序占多个端口号#xff1b;
但是假设一个应用程序占一个端口号#xff1b;一台电脑会有65535个应用程序。
自己编写程序要占用端口号1024以上后的。
80端口#xff1a;网…Sockct:插座Socket是关于TCP的。
端口号两个字节-65536个端口号一个应用程序占多个端口号
但是假设一个应用程序占一个端口号一台电脑会有65535个应用程序。
自己编写程序要占用端口号1024以上后的。
80端口网页
端口号分为TCP端口和UDP端口。每个有65535个端口。通过管道(流)来说话栗子
服务器端package com.zhj.www;
import java.io.DataInputStream;
import java.io.InputStream;
import java.net.*;
public class TCPServer {public static void main(String[] args)throws Exception {ServerSocket ss new ServerSocket(6666);//服务器监听6666端口口while(true) { Socket s ss.accept();//自身建立一个Socket与客户端连接System.out.println(A client connect!);//阻塞式的连接一个客户端连接另外一个客户端不会链接。DataInputStream dis new DataInputStream(s.getInputStream());System.out.println(dis.readUTF());dis.close();s.close();}}
}
客户端
package com.zhj.www;
import java.io.DataOutputStream;
import java.io.OutputStream;
import java.net.*;
public class TCPClient {public static void main(String[] args) throws Exception {Socket s new Socket(127.0.0.1, 6666);//建立连接client随机某个端口去连接服务器的6666OutputStream oStream s.getOutputStream();//拿到输出管道DataOutputStream dataOutputStream new DataOutputStream(oStream);dataOutputStream.writeUTF(hello server!);dataOutputStream.flush();dataOutputStream.close();s.close();}
}-----------------------------------------------------------------------------
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栗子1一端说一端听TestServer.java TestClient.java服务器端package com.zhj.www;import java.io.DataOutputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;public class TestServer {/*拿到服务器端的数据写到客户端*/public static void main(String[] args) {try {ServerSocket ss new ServerSocket(8888);while(true) {Socket socket ss.accept();OutputStream oStream socket.getOutputStream();DataOutputStream dataOutputStream new DataOutputStream(oStream);dataOutputStream.writeUTF(Hello,socket.getInetAddress()port #socket.getPort() bye-bye);//客户端的端口号是随机的dataOutputStream.close();socket.close();}}catch (Exception e) {e.getStackTrace();System.out.println(程序运行出错e);}}}客户端package com.zhj.www;import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ConnectException;
import java.net.Socket;public class TestClient {public static void main(String[] args) {try {Socket socket new Socket(127.0.0.1, 8888);InputStream is socket.getInputStream();DataInputStream dInputStream new DataInputStream(is);System.out.print(dInputStream.readUTF());dInputStream.close();socket.close();}catch (ConnectException connExc) {connExc.getStackTrace();System.out.println(服务器连接失败);} catch (IOException e) {e.getStackTrace();}}}
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栗子2两端都说两端都听 TestSocketServer.java TestSocketClient.java
服务器端
package com.zhj.www;import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;public class TestSocketServer {public static void main(String[] args) {InputStream in null;OutputStream out null;try {ServerSocket ss new ServerSocket(5888);Socket socket ss.accept();in socket.getInputStream();out socket.getOutputStream();DataOutputStream dataOutputStream new DataOutputStream(out);DataInputStream dataInputStream new DataInputStream(in);String string null;if ((string dataInputStream.readUTF()) ! null) {System.out.println(string);System.out.println(from: socket.getInetAddress());System.out.println(Port:socket.getPort());}dataOutputStream.writeUTF(hi,hello);dataOutputStream.close();dataInputStream.close();socket.close();} catch (IOException e) {e.printStackTrace();}}
}
客户端
package com.zhj.www;import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;public class TestSocketClient {public static void main(String[] args) {InputStream inputStream null;OutputStream outputStream null;try {Socket socket new Socket(localhost, 5888);inputStream socket.getInputStream();outputStream socket.getOutputStream();DataInputStream dataInputStream new DataInputStream(inputStream);DataOutputStream dataOutputStream new DataOutputStream(outputStream);dataOutputStream.writeUTF(hey);String string null;while((string dataInputStream.readUTF())! null) {System.out.println(string); }dataOutputStream.close();dataInputStream.close();socket.close();}catch (UnknownError e) {e.printStackTrace();} catch (IOException e) {e.getStackTrace();}}
}
栗子3聊天程序
