de.afbb.bibo.servlet.server.servlet.MainServlet.java Source code

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Here is the source code for de.afbb.bibo.servlet.server.servlet.MainServlet.java

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package de.afbb.bibo.servlet.server.servlet;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import de.afbb.bibo.servlet.server.SessionContainer;
import de.afbb.bibo.servlet.server.Utils;

/**
 *
 * @author philipp
 */
@MultipartConfig
public class MainServlet extends HttpServlet {

    private static final long serialVersionUID = -4080327750481043213L;
    private static final Logger log = LoggerFactory.getLogger(MainServlet.class);

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request
     *            servlet request
     * @param response
     *            servlet response
     * @throws NumberFormatException
     * @throws ServletException
     *             if a servlet-specific error occurs
     * @throws IOException
     *             if an I/O error occurs
     * @throws java.lang.InterruptedException
     * @throws org.apache.commons.fileupload.FileUploadException
     */
    protected void processRequest(final HttpServletRequest request, final HttpServletResponse response)
            throws NumberFormatException, IOException {
        boolean valid = true;
        final String requestRoot = Utils.getRequestPart(request, 0);
        log.debug("entering MAIN Servlet...");

        if (!requestRoot.equals("/login")) {
            valid = SessionContainer.getInstance().validate(request.getHeader("sessionId"));
        }
        log.info("new request: " + request.getRequestURI());
        if (!valid) {
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        } else {

            response.setContentType("application/json");

            try {
                switch (requestRoot) {
                case "/login":
                    new LoginServlet(request, response).processRequest();
                    break;
                case "/user":
                    new UserServlet(request, response).processRequest();
                    break;
                case "/stock":
                    new StockServlet(request, response).processRequest();
                    break;
                case "/borrow":
                    new BorrowServlet(request, response).processRequest();
                    break;
                default:
                    Utils.returnErrorMessage(MainServlet.class, request, response);
                    break;
                }
            } catch (final SQLException | IOException e) {
                log.debug(e.getMessage());
                response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            }
        }
    }

    @Override
    protected void doGet(final HttpServletRequest request, final HttpServletResponse response) {
        try {
            processRequest(request, response);
        } catch (final NumberFormatException | IOException e) {
            log.debug(e.getMessage());
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        }
    }

    @Override
    protected void doPost(final HttpServletRequest request, final HttpServletResponse response) {
        try {
            processRequest(request, response);
        } catch (final NumberFormatException | IOException e) {
            log.debug(e.getMessage());
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        }
    }

}