com.emc.plants.web.servlets.ImageServlet.java Source code

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Here is the source code for com.emc.plants.web.servlets.ImageServlet.java

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//
//"This sample program is provided AS IS and may be used, executed, copied and modified without royalty payment by customer (a) for its own 
//instruction and study, (b) in order to develop applications designed to run with an IBM WebSphere product, either for customer's own internal use 
//or for redistribution by customer, as part of such an application, in customer's own products. " 
//
//Product 5630-A36,  (C) COPYRIGHT International Business Machines Corp., 2001,2002
//All Rights Reserved * Licensed Materials - Property of IBM
//
package com.emc.plants.web.servlets;

import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Autowired;

import com.emc.plants.service.interfaces.Catalog;
import com.emc.plants.utils.Util;

/**
 * Servlet to handle image actions.
 */
public class ImageServlet extends HttpServlet {
    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    //   @EJB(beanName="Catalog")
    @Autowired
    private Catalog catalog;

    /**
     * Servlet initialization.
     */

    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        this.catalog = (Catalog) Util.getSpringBean("catalog");
        Util.setDebug(true);
    }

    /**
     * Process incoming HTTP GET requests
     *
     * @param request Object that encapsulates the request to the servlet
     * @param response Object that encapsulates the response from the servlet
     */
    public void doGet(javax.servlet.http.HttpServletRequest request,
            javax.servlet.http.HttpServletResponse response) throws ServletException, IOException {
        performTask(request, response);
    }

    /**
     * Process incoming HTTP POST requests
     *
     * @param request Object that encapsulates the request to the servlet
     * @param response Object that encapsulates the response from the servlet
     */
    public void doPost(javax.servlet.http.HttpServletRequest request,
            javax.servlet.http.HttpServletResponse response) throws ServletException, IOException {
        performTask(request, response);
    }

    /**
      * Main service method for ImageServlet
      *
      * @param request Object that encapsulates the request to the servlet
      * @param response Object that encapsulates the response from the servlet
      */
    private void performTask(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        String action = null;

        action = req.getParameter("action");
        Util.debug("action=" + action);

        if (action.equals("getimage")) {
            String inventoryID = req.getParameter("inventoryID");

            byte[] buf = catalog.getItemImageBytes(inventoryID);
            if (buf != null) {
                resp.setContentType("image/jpeg");
                resp.getOutputStream().write(buf);
            }
        }
    }

    /** 
     * send redirect
     */
    private void sendRedirect(HttpServletResponse resp, String page) throws ServletException, IOException {
        resp.sendRedirect(resp.encodeRedirectURL(page));
    }

    /** 
     * Request dispatch.
     */
    private void requestDispatch(ServletContext ctx, HttpServletRequest req, HttpServletResponse resp, String page)
            throws ServletException, IOException {
        ctx.getRequestDispatcher("/" + page).include(req, resp);
    }
}