com.fatih.edu.tr.NewTaskServlet.java Source code

Introduction

Here is the source code for com.fatih.edu.tr.NewTaskServlet.java

Source

package com.fatih.edu.tr;
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author RidvanBal
 */
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

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.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 * Servlet implementation class UploadServlet
 */
public class NewTaskServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private static final String DATA_DIRECTORY = "data";
    private static final int MAX_MEMORY_SIZE = 5000 * 1024 * 2;
    private static final int MAX_REQUEST_SIZE = 5000 * 1024;

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        // Check that we have a file upload request
        boolean isMultipart = ServletFileUpload.isMultipartContent(request);

        if (!isMultipart) {
            return;
        }

        // Create a factory for disk-based file items
        DiskFileItemFactory factory = new DiskFileItemFactory();

        // Sets the size threshold beyond which files are written directly to
        // disk.
        factory.setSizeThreshold(MAX_MEMORY_SIZE);

        // Sets the directory used to temporarily store files that are larger
        // than the configured size threshold. We use temporary directory for
        // java
        factory.setRepository(new File(System.getProperty("java.io.tmpdir")));

        // constructs the folder where uploaded file will be stored
        String uploadFolder = getServletContext().getRealPath("") + File.separator + DATA_DIRECTORY;

        // Create a new file upload handler
        ServletFileUpload upload = new ServletFileUpload(factory);

        // Set overall request size constraint
        upload.setSizeMax(MAX_REQUEST_SIZE);

        TaskDao taskDao = new TaskDao();
        String title = "";
        String description = "";
        String due_date = "";
        String fileName = "";
        String filePath = "";
        //taskDao.addTask(title, description, due_date, "testfile","testdizi",1);

        try {
            // Parse the request
            List items = upload.parseRequest(request);
            Iterator iter = items.iterator();
            while (iter.hasNext()) {

                FileItem item = (FileItem) iter.next();

                if (!item.isFormField()) {
                    fileName = new File(item.getName()).getName();
                    filePath = uploadFolder + File.separator + fileName;
                    File uploadedFile = new File(filePath);
                    System.out.println(filePath);
                    item.write(uploadedFile);
                } else {
                    String fieldname = item.getFieldName();
                    String fieldvalue = item.getString();
                    if (fieldname.equals("title")) {
                        title = item.getString();
                    } else if (fieldname.equals("description")) {
                        description = item.getString();

                    } else if (fieldname.equals("due_date")) {
                        due_date = item.getString();
                    } else {
                        System.out.println("Something goes wrong in form");
                    }
                }

            }
            taskDao.addTask(title, description, due_date, fileName, filePath, 1);
            // displays done.jsp page after upload finished
            getServletContext().getRequestDispatcher("/done.jsp").forward(request, response);

        } catch (FileUploadException ex) {
            throw new ServletException(ex);
        } catch (Exception ex) {
            throw new ServletException(ex);
        }

    }

}