perspectivehandler.java

《Java网络程序设计.rar》包括三个网络程序的源代码。

/*

 */

package org.impact.stars.control.web.handlers;

import java.util.Locale;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.Enumeration;
import java.io.ObjectInputStream;
import javax.servlet.http.HttpSession;

import org.impact.stars.util.JSPUtil;
import org.impact.stars.control.event.StarsEvent;
import org.impact.stars.control.exceptions.StarsEventException;
import org.impact.stars.control.event.PerspectiveEvent;

import javax.servlet.http.HttpServletRequest;

import org.impact.stars.util.Debug;
import org.impact.stars.util.WebKeys;

import org.impact.stars.control.web.ModelManager;

/**
 * ExpressPerspectiveHandler
 * This allows a signed user to complete an Perspective using the
 * address from the account
 *
*/
public class PerspectiveHandler extends RequestHandlerSupport {
    ModelManager mm = null;

    public StarsEvent processRequest(HttpServletRequest request) throws StarsEventException{
        Debug.println("Started process Perspective Event");
        /*    String action = request.getParameter("action");
            if (action == null) {
                return null;
            } else if (action.equals("addPerspective")) {
                return createAddPerspectiveEvent(request);
            } else if (action.equals("removePerspective")) {
                return createRemovePerspectiveEvent(request);
            } else if (action.equals("updatePerspective")) {
                return createUpdatePerspectiveEvent(request);
            }
        return null; */
        PerspectiveEvent event = null;
        Debug.println("PerspectiveHandler: Geting Event");
        ObjectInputStream inputFromApplet = null;
	//Perspective aPerspective = null;        
        try
		{  
			// get an input stream from the applet
	        inputFromApplet = new ObjectInputStream(request.getInputStream());
	        Debug.println("Reading perspective stream...");	    
	        // read the serialized perspective data from applet        
	        //aPerspective = (Perspective) inputFromApplet.readObject();
                //get the event from the applet
                event = (PerspectiveEvent) inputFromApplet.readObject();
                Debug.println("Finished Reading ID" + event.getPerspectiveID() + " time " + event.getDeclaretime() );
	        inputFromApplet.close();	        
                //event = new PerspectiveEvent();
                    
                } catch(Exception e) {
                    Debug.print(e);
                }
        return event;
    }
/*
    private StarsEvent createUpdatePerspectiveEvent(HttpServletRequest request){
        PerspectiveEvent event = null;
        Debug.println("PerspectiveHandler: Updating Perspective Item quantities");
        ObjectInputStream inputFromApplet = null;
	//Perspective aPerspective = null;        
	PrintWriter out = null;
	BufferedReader inTest = null;		
		try
		{  
			// get an input stream from the applet
	        inputFromApplet = new ObjectInputStream(request.getInputStream());
	        Debug.println("Reading perspective stream...");	    
	        // read the serialized perspective data from applet        
	        aPerspective = (Perspective) inputFromApplet.readObject();                
                Debug.println("Finished Reading");
	        inputFromApplet.close();	        
                event = new PerspectiveEvent(PerspectiveEvent.UPDATE_ITEM,  itemIds, quantities);
                    }
                } catch(Exception e) {
                    Debug.print(e);
                }
            }
        }
        return event;
    }
    
    private PerspectiveEvent createRemovePerspectiveEvent(HttpServletRequest request) {
        Debug.println("Started Remove Action");
        PerspectiveEvent event = null;
        try {
            // get the id number from the parameter
            String id = request.getParameter("itemId").trim();
            ArrayList itemIds = new ArrayList();
            itemIds.add(id);
            event = new PerspectiveEvent(PerspectiveEvent.DELETE_ITEM, itemIds);
        } catch(Exception e) {
            Debug.print(e);
        }
        return event;
    }

    private PerspectiveEvent createAddPerspectiveEvent(HttpServletRequest request) {
        Debug.println("Started Purchase Action");
        PerspectiveEvent event = null;
        try {
            // get the id number from the parameter
            String id = request.getParameter("itemId").trim();
            ArrayList itemIds = new ArrayList();
            itemIds.add(id);
            event = new PerspectiveEvent(PerspectiveEvent.ADD_ITEM, itemIds);
        } catch(Exception e) {
            Debug.print(e);
        }
        return event;
    }
*/
}