Sistem Client Server
Pemograman Sistem client Server dengan menggunakan bahasa pemograman java.
cara membuat program client server adalah sebagai berikut :
- Gunakan lebih dari 1 komputer gunanya untuk membuat server dan client .
- Buka aplikasi netbeans pada masing-masing komputer dan beri nama projek komputer 1 beri nama SERVER dan projek 2 beri nama CLIENT.
- Masukan coding server ke komputer SERVER dan coding client ke Komputer CLIENT, contoh coding server dan client ada di bawah ini.
- Dalam coding client ganti coding localhost dengan ip komputer Server.contoh coding client " Socket s=new Socket("10.0.0.4", 5111);" dengan mengubah jadi " Socket s=new Socket("192.168.0.1", 5111);" tergantung ip yang kita setting di komputer sever.
- Setelah coding client dan server success di running maka isi dalam komputer client seperti berikut ini:
Ini client maka akan muncul di komputer CLIENT
dan di komputer SERVER
Coding dari Server
**********************************************************************
package tugas_server;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Tugas_server {
public static void main(String[] args) {
try {
ServerSocket ss = new ServerSocket(5111);
Socket s;
String balasan;
String balasan2;
ObjectInputStream in = null;
ObjectOutputStream out = null;
s = ss.accept();
out = new ObjectOutputStream(s.getOutputStream());
out.flush();
in = new ObjectInputStream(s.getInputStream());
balasan = "";
balasan2 = "";
while (true) {
balasan = "";
balasan2 = "";
balasan = ReadMessage(in);
if (balasan.equals("exit")) break;
else {
if(balasan.equals("ini client"))
{
SendMessage("ini server, masukan username", out);
balasan2 = ReadMessage(in);
if (balasan2.equals("admin")){ SendMessage("Selamat Datang Admin", out);}
else {
if (balasan2.equals("user")){SendMessage("Selamat Datang User", out);}
else SendMessage("username tidak diketahui", out);
}
}
else
{
SendMessage("perintah tidak diketahui", out);
}
}
}
in.close();
out.close();
s.close();
ss.close();
}catch (IOException ex){
Logger.getLogger(Tugas_server.class.getName()).log(Level.SEVERE,null,ex);
}
}
public static String ReadMessage(ObjectInputStream in)
{
String Reader="";
try {
Reader=(String)in.readObject();
}catch (IOException ex){
Logger.getLogger(Tugas_server.class.getName()).log(Level.SEVERE,null,ex);
}catch (ClassNotFoundException ex){
Logger.getLogger(Tugas_server.class.getName()).log(Level.SEVERE,null,ex);
}
System.out.println(Reader);
return Reader;
}
public static void SendMessage(String word, ObjectOutputStream out)
{
try{
out.writeObject(word);
out.flush();
}catch (IOException ex){
Logger.getLogger(Tugas_server.class.getName()).log(Level.SEVERE,null,ex);
}
}
}
***********************************************************************
Coding Client.
package tgs_client;
import java.util.Scanner;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author UNLA
*/
public class Tgs_Client {
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws IOException{
Socket s=new Socket("10.0.0.4", 5111);
ObjectInputStream in=null;
ObjectOutputStream out=null;
Scanner scanf=new Scanner(System.in);
String input="";
String balasan;
String balasan2;
out=new ObjectOutputStream(s.getOutputStream());
out.flush();
in=new ObjectInputStream(s.getInputStream());
balasan = "";
balasan2="";
while(true)
{
balasan="";
balasan2="";
input=scanf.nextLine();
SendMessage(input, out);
if(input.equals("exit"))break;
else
{
balasan=ReadMessage(in);
if(balasan.equals("ini server, masukkan username"))
{
input=scanf.nextLine();
SendMessage(input, out);
balasan2=ReadMessage(in);
}
}
}
in.close();
out.close();
s.close();
// TODO code application logic here
}
public static void SendMessage(String word, ObjectOutputStream out)
{
try{
out.writeObject(word);
out.flush();
} catch (IOException ex){
Logger.getLogger(Tgs_Client.class.getName()).log(Level.SEVERE, null, ex);
}
}
public static String ReadMessage(ObjectInputStream in)
{
String reader="";
try{
reader=(String) in.readObject();
} catch (IOException ex){
Logger.getLogger(Tgs_Client.class.getName()).log(Level.SEVERE, null, ex);
} catch (ClassNotFoundException ex){
Logger.getLogger(Tgs_Client.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println(reader);
return reader;
}
}
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