/**File Upload Servlet. Clients use a HTML form to send files to this servlet.
* Internet Programming 2 - Course
*@author Martin Carlsson
*/
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

import com.oreilly.servlet.MultipartRequest;
import com.oreilly.servlet.ServletUtils;

public class FormsFileUpload extends HttpServlet {
    
   
    public void doPost(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException {
        
        res.setContentType("text/plain");
        ServletOutputStream out = res.getOutputStream();
        File dir = (File)getServletContext().getAttribute("javax.servlet.context.tempdir");
        MultipartRequest mR = new MultipartRequest(req, dir.getAbsolutePath() ,500000);
        
      
        Enumeration files = mR.getFileNames();
        while(files.hasMoreElements()) {
            String name = (String)files.nextElement();
            String filename = mR.getFilesystemName(name);
            String type = mR.getContentType(name);
            File file = mR.getFile(name);
            if(file == null) {
                out.println("No file selected, please try again!");
                return;
            }
            if(!(type.equals("text/plain") || type.equals("image/gif") || type.equals("image/pjpeg")
                                        || type.equals("image/x-png") || type.equals("image/jpeg"))) {
                out.println("filename: "+filename);
                out.println("type: "+type);
                out.println("SIZE: "+file.length());
            }
            else {
                try{
                    res.setContentType(type);
                    String pathToFile = dir.getAbsolutePath()+"\\"+filename;
                    ServletUtils.returnFile(pathToFile, out);
                }
                catch (FileNotFoundException fNfE) {
                    res.sendError(res.SC_NOT_FOUND);
                }
                catch(IOException iOe) {
                   res.sendError(res.SC_INTERNAL_SERVER_ERROR, ServletUtils.getStackTraceAsString(iOe));
                }
            } // else
        } // while
    } // doPost
} // End class FormsFileUpload