Uploading file to particular directory

You can configure the File Upload support in servlet specification 3.0 so that it uploads files to particular directory on your server.

package com.webspherenotes.j2ee6.servlet;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collection;
import java.util.Iterator;

import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;

/**
 * Servlet implementation class HelloFileUploadAnnotationServlet
 */
@WebServlet("/hellofileupload")
@MultipartConfig(location="c:/temp/upload")
public class HelloFileUploadAnnotationServlet extends HttpServlet {
  private static final long serialVersionUID = 1L;
       
 
  protected void doPost(HttpServletRequest request, HttpServletResponse response) 
  throws ServletException, IOException {
    System.out.println("Entering HelloFileUploadAnnotationServlet.doPost()");
    response.setContentType("text/html");
    response.getWriter().println("Hello from FileUploadServlet");
    Collection fileParts = request.getParts();
    Iterator filePartIt = fileParts.iterator();
    while(filePartIt.hasNext()){
      Part filePart = filePartIt.next();
      System.out.println("File Name " + filePart.getName());
      System.out.println("File Size " + filePart.getSize());
      
      System.out.println("File Content ");
      BufferedReader fileReader =
        new BufferedReader(new InputStreamReader(filePart.getInputStream()));
      String line = null;
      while(( line = fileReader.readLine()) != null){
        System.out.println(line);
      }
    }
    System.out.println("Exiting HelloFileUploadAnnotationServlet.doPost()");
  }

}

In my case i am setting value of location to c:/temp/upload and then i tried uploading couple of files and now i can see that every time i upload a file a .tmp file gets created in c:/temp/upload