Replace Non ASCII Characters in a File

Generate One Pixel image using Servlet

package com.pukhraj.blog;

//Generate One Pixel image using Servlet

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.io.OutputStream;

import javax.imageio.ImageIO;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class PixelImage extends HttpServlet  {

private BufferedImage pixel;

 public void init(ServletConfig config) throws ServletException {

   super.init(config);

   pixel = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);

   pixel.setRGB(0, 0, (0xFF));

 }

public void process(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("image/png");

OutputStream os = response.getOutputStream();

   ImageIO.write(pixel, "png", os);

   os.close();

}

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

process(request, response);

}

protected void doGet(HttpServletRequest request, HttpServletResponse response) 

throws ServletException, IOException {

process(request, response);

}

}