baseclient.java

java的一系列产品中包括jsme,jmse,j2ee,本文件提供j2ee实现的源代码.

package bankaccount;

import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;

public abstract class BaseClient {

  private Context ctx;

  private String url = "t3://localhost:7001";

  protected Object narrow(Object o, Class c) {
    return PortableRemoteObject.narrow(o, c);
  }

  protected Context getInitialContext() throws NamingException
  {
    if(ctx == null){
      try {
        Properties p = new Properties();
        p.put(Context.INITIAL_CONTEXT_FACTORY,
          "weblogic.jndi.WLInitialContextFactory");
        p.put(Context.PROVIDER_URL, url);
        ctx = new InitialContext(p);
      } catch (NamingException ne) {
        System.err.println("** Unable to connect to the server at:"
          +url);
        ne.printStackTrace();
        throw ne;
      }

    }

    return ctx;
  }

  public BaseClient(String [] argv) {

    if (argv.length > 0) url = argv[0];
  }
    
}