baseclient.java

J2EE开发与Weblogic一书中的源代码

package com.learnweblogic.examples;

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];
    }

}