sipl.servlets.FileBackupServlet.java Source code

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Here is the source code for sipl.servlets.FileBackupServlet.java

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package sipl.servlets;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
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 sipl.db.Conexion;
import sipl.db.variableSisDAO;
import sipl.dominio.VariableSis;

/**
 *
 * @author WM
 */
@WebServlet(name = "FileBackupServlet", urlPatterns = { "/FileBackupServlet" })
public class FileBackupServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;
    private static final String UPLOAD_DIRECTORY = "Backup";
    private static final int MEMORY_THRESHOLD = 1024 * 1024 * 3;
    String nombre = "";

    /**
     * Upon receiving file upload submission, parses the request to read upload
     * data and saves the file on disk.
     *
     * @param request
     * @param response
     * @throws javax.servlet.ServletException
     * @throws java.io.IOException
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        if (!ServletFileUpload.isMultipartContent(request)) {
            PrintWriter writer = response.getWriter();
            writer.println("Error: Form must has enctype=multipart/form-data.");
            writer.flush();
            return;
        }
        DiskFileItemFactory factory = new DiskFileItemFactory();
        factory.setSizeThreshold(MEMORY_THRESHOLD);
        factory.setRepository(new File(System.getProperty("java.io.tmpdir")));
        ServletFileUpload upload = new ServletFileUpload(factory);
        Conexion con = new Conexion();
        variableSisDAO varDAO = new variableSisDAO(con);
        VariableSis var = varDAO.getTipo_variable(1);
        String dir = var.getDatos();
        String uploadPath = dir + UPLOAD_DIRECTORY;
        File uploadDir = new File(uploadPath);
        if (!uploadDir.exists()) {
            uploadDir.mkdir();
        }
        try {
            @SuppressWarnings("unchecked")
            List<FileItem> formItems = upload.parseRequest(request);
            if (formItems != null && formItems.size() > 0) {
                for (FileItem item : formItems) {
                    if (!item.isFormField()) {
                        String fileName = new File(item.getName()).getName();
                        nombre = fileName;
                        String filePath = uploadPath + File.separator + fileName;
                        File storeFile = new File(filePath);
                        item.write(storeFile);
                        request.setAttribute("message", "Upload has been done successfully!");
                        request.setAttribute("backup", nombre);
                    }
                }
            }
        } catch (Exception ex) {
            request.setAttribute("message", "There was an error: " + ex.getMessage());
        }
        getServletContext().getRequestDispatcher("/restore.jsp").forward(request, response);
    }
}