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This commit is contained in:
Alexander Bachinger
2025-05-29 20:44:17 +02:00
parent 64764cef9e
commit 3e9a34fc10
4 changed files with 132 additions and 148 deletions
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130
src/UE23_270525_Chatserver/ChatClient.java
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package UE23_270525_Chatserver;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
public class ChatClient extends Thread {
Socket client;
String name = "";
public ChatClient(Socket s) {
client = s;
}
@Override
public void run() {
try (BufferedReader br = new BufferedReader(new InputStreamReader(client.getInputStream())); BufferedWriter wr = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()))) {
while (true) {
wr.write("Willkommen beim Mathe-Quiz\n\rWie heftig hättest du es gerne?");
wr.flush();
while (true) {
int level;
wr.write("\n\rBitte gibt eine Zahl zwischen 1 und 3 ein. (Leer für 1): ");
wr.flush();
try {
String input = br.readLine();
if (input == null || input.trim().isEmpty()) break;
level = Integer.parseInt(input);
} catch (Exception _) {
continue;
}
if (level < 1 || level > 3) continue;
this.level = level;
break;
}
while (true) {
int anz;
wr.write("\n\rWie viele Fragen meochtest du loesen (1 - 999) (Leer für 10): ");
wr.flush();
try {
String input = br.readLine();
if (input == null || input.trim().isEmpty()) break;
anz = Integer.parseInt(input);
} catch (Exception _) {
continue;
}
if (anz < 1 || anz > 999) continue;
this.anzCals = anz;
break;
}
for (int i = 1; i <= anzCals; i++) {
int type = randomInRange(1, 4), solution, a, b;
String operator;
switch (level) {
case 1 -> {
a = randomInRange(1, 10);
b = randomInRange(1, 10);
}
case 2 -> {
a = randomInRange(-100, 100);
b = randomInRange(-100, 100);
}
case 3 -> {
a = randomInRange(-10_000, 10_000);
b = randomInRange(-10_000, 10_000);
}
default -> throw new IllegalStateException("Unexpected value: " + level);
}
switch (type) {
case 1 -> {
operator = "+";
solution = a + b;
}
case 2 -> {
operator = "-";
solution = a - b;
}
case 3 -> {
operator = "*";
solution = a * b;
}
case 4 -> {
operator = "/";
solution = a / (b == 0 ? 1 : b);
}
default -> throw new IllegalStateException("Unexpected value: " + type);
}
String question = "(Level " + level + ") Frage " + i + ": " + a + " " + operator + " " + b + " = ";
wr.write(question);
wr.flush();
while (true) {
String message = "\n\rFalsch :( .. versuche es noch einmal\n\n\r" + question;
try {
String input = br.readLine();
if (input == null || input.trim().isEmpty() || Integer.parseInt(input) != solution) {
wr.write(message);
wr.flush();
continue;
}
} catch (Exception _) {
wr.write(message);
wr.flush();
continue;
}
wr.write("\n\rrichtig :)\n\n\r");
wr.flush();
break;
}
}
wr.write("\n\n\n\rHerzlichen Glückwunsch du hast es geschafft!!\n");
wr.flush();
boolean end = true;
while (true) {
wr.write("\n\rMoechtest du noch einmal spielen? [y/N]: ");
wr.flush();
String input = br.readLine();
if (input == null || input.trim().isEmpty() || input.trim().equalsIgnoreCase("n")) break;
if (input.trim().equalsIgnoreCase("y")) {
end = false;
break;
}
}
if (end) break;
}
} catch (Exception _) {
}
}
}

18
src/UE23_270525_Chatserver/ChatServer.java
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package UE23_270525_Chatserver;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class ChatServer {
public static void main(String[] args) {
try (ServerSocket server = new ServerSocket(1000)) {
while (true) {
System.out.println("Ready to connect");
Socket client = server.accept();
new ChatClient(client).start();
}
} catch (IOException _) {
}
}
}

69
src/UE23_270525_Chatserver/Client.java Normal file
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package UE23_270525_Chatserver;
import java.io.*;
import java.net.Socket;
public class Client extends Thread {
private static final String STZ_DAVOR = new String(new byte[]{0x0b, 0x1b, '[', '1', 'A', 0x1b, '7', 0x1b, '[', '1', 'L', '\r'});
private static final String STZ_DANACH = new String(new byte[]{0x1b, '8', 0x1b, '[', '1', 'B'});
Socket client;
String username = "";
int anzMessages = 0;
private BufferedWriter wr;
public Client(Socket s) {
client = s;
this.start();
}
@Override
public void run() {
try (BufferedReader br = new BufferedReader(new InputStreamReader(client.getInputStream())); BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()))) {
this.wr = writer;
wr.write("Willkommen beim Chat-Server der 3AI\n\rUm die Verbindung zu beenden gib \"quit\" ein.\n\rWelchen Spitznamen moechtest du haben: ");
wr.flush();
while (true) {
String input = br.readLine();
if (input == null || input.isBlank()) continue;
this.username = input.trim();
if (Server.anmelden(this)) break;
wr.write("\n\rDer Spitzname \"" + input + "\" ist leider schon vergeben. Waehle einen anderen: ");
wr.flush();
}
while (true) {
wr.write(this.username + "> ");
wr.flush();
String input = br.readLine();
if (input == null || input.isBlank()) continue;
input = input.trim();
if (input.equalsIgnoreCase("quit")) break;
if (input.equalsIgnoreCase("list")) {
for (String s : Server.getClients().stream().map(c -> c.username).toList())
nachrichtSenden(s + "\n\r");
continue;
}
if (input.equalsIgnoreCase("stat")) {
for (String s : Server.getClients().stream().map(c -> c.username + ": " + c.anzMessages + " Messages").toList())
nachrichtSenden(s + "\n\r");
continue;
}
Server.nachrichtVerteilen(this, this.username + ": " + input);
this.anzMessages++;
}
} catch (Exception _) {
} finally {
Server.abmelden(this);
}
}
public void nachrichtSenden(String message) {
try {
wr.write(STZ_DAVOR + message + STZ_DANACH);
wr.flush();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}

63
src/UE23_270525_Chatserver/Server.java Normal file
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package UE23_270525_Chatserver;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
public class Server {
private static final List<Client> clients = new ArrayList<>();
public static List<Client> getClients() {
return clients;
}
public static void main(String[] args) {
try (ServerSocket server = new ServerSocket(1000)) {
System.out.println("Server ready! (" + server.getInetAddress() + ":" + server.getLocalPort() + ")");
//noinspection InfiniteLoopStatement
while (true) {
Socket client = server.accept();
System.out.println("New client connected: " + client.getInetAddress() + ":" + client.getPort());
new Client(client);
}
} catch (IOException _) {
}
}
public static void nachrichtVerteilen(Client client, String message) {
String[] strings = message.split(":");
if (strings.length > 2) {
int index = message.indexOf(":") + 1;
String sender = message.substring(0, index);
String msg = message.substring(message.indexOf(":", index) + 1);
String send = sender + " " + msg.trim();
Optional<Client> receiver = clients.stream().filter(c -> c.username.equalsIgnoreCase(strings[1].trim())).findFirst();
if (receiver.isPresent()) {
receiver.get().nachrichtSenden(send);
return;
}
}
clients.stream().filter(c -> !c.username.equalsIgnoreCase(client.username)).forEach(c -> c.nachrichtSenden(message));
}
public static boolean anmelden(Client client) {
if (clients.stream().noneMatch(c -> c.username.equalsIgnoreCase(client.username))) {
clients.add(client);
nachrichtVerteilen(client, "\"" + client.username + "\" hat den Raum betreten.\n\r");
System.out.println(client.username + " joined the chat room.");
return true;
}
return false;
}
public static void abmelden(Client client) {
clients.remove(client);
nachrichtVerteilen(client, "\"" + client.username + "\" hat den Raum verlassen.\n\r");
System.out.println(client.username + " left the chat room.");
}
}