Initial Commit

src/chatprogramm/Client.java

+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package chatprogramm;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.net.Socket;
+import java.util.logging.Logger;
+
+/**
+ * Builder Class
+ * @author le
+ */
+public class Client
+{
+  private static final Logger lg = Logger.getLogger("netz");
+  private static final int PORT = 35000;
+  private static final String IP_ADRESSE = "127.0.0.1";
+  
+  public Client() throws IOException
+  {
+    lg.info("Client: verbinde ...");
+    Socket s = new Socket(IP_ADRESSE, PORT); // Achtung: blockiert!
+    lg.info("Client: Verbindung hergestellt");
+    InputStream iStream = s.getInputStream();
+    OutputStream oStream = s.getOutputStream();
+    
+    InputStreamReader isr = new InputStreamReader(iStream, "UTF-8");
+    OutputStreamWriter osr = new OutputStreamWriter(oStream, "UTF-8");
+    
+    BufferedReader in = new BufferedReader(isr);
+    //BufferedWriter out = new BufferedWriter(osr);
+    PrintWriter out = new PrintWriter(osr);
+    
+    lg.info("Client: Stream initialisiert");
+    
+    out.println("Hallo Du Server Du - ich bin der client");
+    out.flush(); // wirklich absenden!!
+    
+    lg.info("Client: Nachricht versendet");
+    
+    String quittung = in.readLine(); // Achtung blockiert
+    lg.info("Client: Quittung empfangen");
+
+    System.out.println("Client: Quittung EMPFANGEN - " + quittung);
+
+    
+    
+    out.close();
+    in.close();
+  }
+
+  /**
+   * @param args the command line arguments
+   */
+  public static void main(String[] args) 
+  {
+    try
+    {
+      new Client();
+    }
+    catch (IOException ex)
+    {
+      lg.severe(ex.toString());
+    }
+  }
+}

src/chatprogramm/Server.java

+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package chatprogramm;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.logging.Logger;
+
+/**
+ * Builder Class
+ * @author le
+ */
+public class Server
+{
+  private static final Logger lg = Logger.getLogger("netz");
+  private static final int PORT = 35000;
+  
+  public Server() throws IOException
+  {
+    ServerSocket sSocket = new ServerSocket(PORT);  
+    lg.info("Server: Warte auf Verbindung ...");
+    Socket s = sSocket.accept(); // Achtung: blockiert!
+    lg.info("Server: Verbindung akzeptiert");
+    InputStream iStream = s.getInputStream();
+    OutputStream oStream = s.getOutputStream();
+    
+    InputStreamReader isr = new InputStreamReader(iStream, "UTF-8");
+    OutputStreamWriter osr = new OutputStreamWriter(oStream, "UTF-8");
+    
+    BufferedReader in = new BufferedReader(isr);
+    //BufferedWriter out = new BufferedWriter(osr);
+    PrintWriter out = new PrintWriter(osr);
+    
+    lg.info("Server: Stream initialisiert");
+    lg.info("Server: warte auf Nachricht ...");
+    
+    String nachricht = in.readLine(); // Achtung blockiert
+    lg.info("Server: Nachricht empfangen");
+
+    System.out.println("Server: NACHRICHT EMPFANGEN - " + nachricht);
+
+    out.println("Server -> ich habe die Nachricht erhalten");
+    lg.info("Server: Quittung versendet");
+    
+    out.flush(); // wirklich absenden!!
+    
+    out.close();
+    in.close();
+  }
+
+  /**
+   * @param args the command line arguments
+   */
+  public static void main(String[] args) 
+  {
+    try
+    {
+      new Server();
+    }
+    catch (IOException ex)
+    {
+      lg.severe(ex.toString());
+    }
+  }
+}

src/chatprogramm/Start.java

+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package chatprogramm;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+/**
+ * Builder Class
+ * @author le
+ */
+public class Start
+{
+  public Start(String urlString, String dateiname) throws MalformedURLException, IOException
+  {
+    URL oUrl = new URL(urlString + "/" + dateiname);
+    InputStream iStream = oUrl.openStream();
+    BufferedInputStream in = new BufferedInputStream(iStream);
+    
+    String tmpVerzeichnis = System.getProperty("java.io.tmpdir");
+    String ausgabeDateiname = tmpVerzeichnis + File.separator + dateiname;
+    
+    FileOutputStream fos = new FileOutputStream(ausgabeDateiname);
+    BufferedOutputStream out = new BufferedOutputStream(fos);
+    
+    int wert = 0;
+    
+    while ( (wert = in.read()) >= 0)
+    {
+      out.write(wert);
+    }
+    in.close();
+    out.close(); // flush!
+    System.out.println("Datei " + ausgabeDateiname + " erfolgreich erstellt");
+    
+  }
+
+  /**
+   * @param args the command line arguments
+   */
+  public static void main(String[] args) 
+  {
+    if (args.length != 2)
+    {
+      System.err.println("2 Aufrufparameter nötig: URL-String Dateiname");
+    }
+    else
+    {
+      try
+      {
+        new Start(args[0], args[1]);
+      }
+      catch (Exception ex)
+      {
+        System.err.println(ex);
+        ex.printStackTrace();
+      }
+    }
+  }
+}