nullcommand.java

java三层架构（MVC)实现的在线图书销售系统。其中应用到工厂

package accp.yyw.model.command;

/**
 * <p>Title: BookShop</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: accp</p>
 * @author yyw
 * @version 1.0
 */

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class NullCommand implements ICommand {

          String dispatcher;

          public NullCommand(String dispatcher) {

            this.dispatcher = dispatcher;
          }

        public String execute(HttpServletRequest request) {

            return dispatcher;
          }
}