com.mylop.servlet.ImageServlet.java Source code

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/*
 * 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.
 */
package com.mylop.servlet;

import com.mylop.bean.Account;
import com.mylop.model.ProfileModel;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 *
 * @author quangbach
 */
public class ImageServlet extends HttpServlet {
    private static final String UPLOAD_DIRECTORY = "/var/lib/tomcat7/webapps/Avatar";

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet ImageServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet ImageServlet at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        uploadImage(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    public void uploadImage(HttpServletRequest request, HttpServletResponse response) throws IOException {
        response.setContentType("application/json");
        boolean isMultipart = ServletFileUpload.isMultipartContent(request);

        HttpSession session = request.getSession();
        String account = (String) session.getAttribute("userid");
        if (isMultipart) {
            FileItemFactory factory = new DiskFileItemFactory();
            ServletFileUpload upload = new ServletFileUpload(factory);
            try {
                List<FileItem> multiparts = upload.parseRequest(request);
                for (FileItem item : multiparts) {
                    if (!item.isFormField()) {
                        String contentType = item.getContentType();
                        String[] ext = contentType.split("/");

                        String fileName = UPLOAD_DIRECTORY + File.separator + account + "_Avatar";
                        File file = new File(fileName);

                        item.write(file);
                        String avatarUrl = "http://mylop.tk:8080/Avatar/" + account + "_Avatar";
                        ProfileModel pm = new ProfileModel();
                        Map<String, String> update = new HashMap<String, String>();
                        update.put("avatar", avatarUrl);
                        pm.updateProfile(account, update);
                    }
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        String json = "{\"message\": \"success\"}";
        response.getWriter().write(json);

    }
}