com.eufar.asmm.server.UploadImage.java Source code

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Here is the source code for com.eufar.asmm.server.UploadImage.java

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/***LICENSE START
 * Copyright 2011 EUROPEAN UNION
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * 
 * http://ec.europa.eu/idabc/eupl
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 * 
 * Date: 03 January 2011
 * Authors: Marzia Grasso, Angelo Quaglia, Massimo Craglia
LICENSE END***/

package com.eufar.asmm.server;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Iterator;

import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;

@SuppressWarnings("hiding")
public class UploadImage<FileItem> extends HttpServlet implements Servlet {
    private static final long serialVersionUID = 1546989855214562L;
    private static final String DATA_DIRECTORY = "/tmp";
    private static final int MAX_MEMORY_SIZE = 1024 * 1024 * 5;
    private static final int MAX_REQUEST_SIZE = 1024 * 1024 * 5;

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        System.out.println("UploadImage - the function started");
        DiskFileItemFactory factory = new DiskFileItemFactory();
        factory.setSizeThreshold(MAX_MEMORY_SIZE);
        String uploadFolder = getServletContext().getRealPath("") + DATA_DIRECTORY;
        ServletFileUpload upload = new ServletFileUpload(factory);
        upload.setSizeMax(MAX_REQUEST_SIZE);
        double maxSize = (MAX_REQUEST_SIZE / 1024) / 1024;
        System.out.println("UploadImage - max image size: " + maxSize + " Mbytes");
        try {
            @SuppressWarnings("rawtypes")
            List items = upload.parseRequest(request);
            @SuppressWarnings("rawtypes")
            Iterator iter = items.iterator();
            while (iter.hasNext()) {
                Object obj = iter.next();
                org.apache.commons.fileupload.FileItem item = (org.apache.commons.fileupload.FileItem) obj;
                String fileExt = FilenameUtils.getExtension(item.getName());
                if (fileExt.matches("(jpg|jpeg|bmp|png|JPG|JPEG|BMP|PNG)")) {
                    System.out.println("UploadImage - image accepted");
                    if (!item.isFormField()) {
                        File uploadedFile = File.createTempFile("tmp_", "." + fileExt, new File(uploadFolder));
                        item.write(uploadedFile);
                        double fileSize = item.getSize();
                        fileSize = (fileSize / 1024) / 1024;
                        response.setCharacterEncoding("UTF-8");
                        response.setContentType("text/html");
                        response.getWriter().write(uploadedFile.getName());
                        System.out.println("UploadImage - " + uploadedFile.getPath() + ": upload ok...");
                        System.out.println("UploadImage - " + uploadedFile.getPath() + ": " + fileSize + " MBytes");
                        if (new File(uploadedFile.getPath()).isFile()) {
                            System.out.println("PrintFunction - picture (webapps): the file exists.");
                        } else {
                            System.out.println("PrintFunction - picture (webapps): the file doesn't exist.");
                        }
                        if (new File(uploadedFile.getPath()).isFile()) {
                            System.out.println("PrintFunction - picture (webapps): the file can be read.");
                        } else {
                            System.out.println("PrintFunction - picture (webapps): the file can't be read.");
                        }
                    } else {
                        System.out.println("UploadImage - a problem occured with the file format");
                    }
                } else {
                    System.out.println("UploadImage - image rejected: wrong format");
                    response.setCharacterEncoding("UTF-8");
                    response.setContentType("text/html");
                    response.getWriter().write("format");
                }
            }
        } catch (Exception ex) {
            System.out.println("UploadImage - a problem occured: " + ex);
            response.getWriter().write("ERROR:" + ex.getMessage());
        }
    }
}