clientwithoutlog4j.java

log4j的基本功能的实现包括属性文件的配置

package log4j ;

import java.io.* ;
import java.net.* ;

/**
*
* <p> Client Without Log4j </p>
* <p> Description: a sample with log4j</p>
* @version 1.0
*/
public class ClientWithoutLog4j {

/**
   *
   * @param args
   */
public static void main ( String args [] ) {

      String welcome = null;
      String response = null;
      BufferedReader reader = null;
      PrintWriter writer = null;
      InputStream in = null;
      OutputStream out = null;
      Socket client = null;

      try {
          client = new Socket ( "localhost", 8001 ) ;
          System.out.println ( "info: Client socket: " + client ) ;
          in = client.getInputStream () ;
          out = client.getOutputStream () ;
      } catch ( IOException e ) {
          System.out.println ( "error: IOException : " + e ) ;
          System.exit ( 0 ) ;
      }

      try{
          reader = new BufferedReader( new InputStreamReader ( in ) ) ;
          writer = new PrintWriter ( new OutputStreamWriter ( out ), true ) ;

          welcome = reader.readLine () ;
          System.out.println ( "debug: Server says: '" + welcome + "'" ) ;

          System.out.println ( "debug: HELLO" ) ;
          writer.println ( "HELLO" ) ;
          response = reader.readLine () ;
          System.out.println ( "debug: Server responds: '" + response + "'") ;

          System.out.println ( "debug: HELP" ) ;
          writer.println ( "HELP" ) ;
          response = reader.readLine () ;
          System.out.println ( "debug: Server responds: '" + response + "'" ) ;

          System.out.println ( "debug: QUIT" ) ;
          writer.println ( "QUIT" ) ;
      } catch ( IOException e ) {
          System.out.println ( "warn: IOException in client.in.readln()" ) ;
          System.out.println ( e ) ;
      }
      try{
          Thread.sleep ( 2000 ) ;
      } catch ( Exception ignored ) {}
}
}