jndi.java

本书中的源代码是以JBuilder工程形式组织的

package jndi;

import javax.naming.*;
import java.util.Hashtable;

class JNDI {
  static Context ctx = null;

  public JNDI() {
  }

  public static void bind(String name, String object) {
    Hashtable ht = new Hashtable();
    ht.put(Context.INITIAL_CONTEXT_FACTORY,
           "weblogic.jndi.WLInitialContextFactory");
    ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
    try {
      ctx = new InitialContext(ht);
      // Use the context in your program
      ctx.rebind(name, object);

    }
    catch (NamingException e) {
      // a failure occurred
          System.out.println(e);
    }
    finally {

      try {
        ctx.close();
      }
      catch (Exception e) {
        e.printStackTrace();
      }

    }
  }

  public static Object lookUp(String name) {
    Hashtable ht = new Hashtable();
    ht.put(Context.INITIAL_CONTEXT_FACTORY,
           "weblogic.jndi.WLInitialContextFactory");
    ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
    try {
      ctx = new InitialContext(ht);
      // Use the context in your program
      Object object = ctx.lookup(name);
      return object;
    }
    catch (NamingException e) {
      e.printStackTrace();
    }
    finally {
      try {
        ctx.close();
      }
      catch (Exception e) {
        // a failure occurred
          System.out.println(e);

      }
    }
    return null;

  }

  public static void main(String args[]) {
    String arg = args[0];
    if(arg.equals("bind")){
           System.out.println("bind begin...");
       String bookName = "WebLogic introduction";
       bind("bookname", bookName);
           System.out.println("bind end");
    }
    if(arg.equals("lookup")){
      System.out.println("lookup begin...");
      String bookName;
      bookName = (String)lookUp("bookname");
      System.out.println("bookname is: "+bookName);
          System.out.println("lookup end");
    }
  }
}