remotetimeserver.java

网络书店的设计与实现 网络书店的设计与实现

//: c15:corba:RemoteTimeServer.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import remotetime.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CORBA.*;
import java.util.*;
import java.text.*;

// Server object implementation
class ExactTimeServer extends _ExactTimeImplBase {
  public String getTime(){
    return DateFormat.
        getTimeInstance(DateFormat.FULL).
          format(new Date(
              System.currentTimeMillis()));
  }
}

// Remote application implementation
public class RemoteTimeServer {
  public static void main(String[] args) {
    try {
      // ORB creation and initialization:
      ORB orb = ORB.init(args, null);
      // Create the server object and register it:
      ExactTimeServer timeServerObjRef = 
        new ExactTimeServer();
      orb.connect(timeServerObjRef);
      // Get the root naming context:
      org.omg.CORBA.Object objRef = 
        orb.resolve_initial_references(
          "NameService");
      NamingContext ncRef = 
        NamingContextHelper.narrow(objRef);
      // Assign a string name to the 
      // object reference (binding):
      NameComponent nc = 
        new NameComponent("ExactTime", "");
      NameComponent[] path = { nc };
      ncRef.rebind(path, timeServerObjRef);
      // Wait for client requests:
      java.lang.Object sync =
        new java.lang.Object();
      synchronized(sync){
        sync.wait();
      }
    }
    catch (Exception e) {
      System.out.println(
         "Remote Time server error: " + e);
      e.printStackTrace(System.out);
    }
  }
} ///:~