javaͼƬÑéÖ¤Âë
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Random;
import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class ImageRandom extends HttpServlet {
/**
* Constructor of the object.
*/
public ImageRandom() {
super();
}
public void processRequest(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
response.setContentType("image/jpeg");
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);
HttpSession session=request.getSession();
// ÔÚÄÚ´æÖд´½¨Í¼Ïó
int width=60, height=20;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
// »ñȡͼÐÎÉÏÏÂÎÄ
Graphics graphics = image.getGraphics();
//Éú³ÉËæ»úÀà
Random random = new Random();
// É趨±³¾°É«
//graphics.setColor(this.getRandColor(100,150));
graphics.setColor(Color.gray);
graphics.clipRect(0, 0, width, height);
//É趨×ÖÌå
graphics.setFont(new Font("Times New Roman",Font.PLAIN,18));
//»±ß¿ò
//graphics.setColor(new Color());
//graphics.drawRect(0,0,width-1,height-1);
// Ëæ»ú²úÉú50Ìõ¸ÉÈÅÏߣ¬Ê¹Í¼ÏóÖеÄÈÏÖ¤Âë²»Ò×±»ÆäËü³ÌÐò̽²âµ½
graphics.setColor(getRandColor(100,200));
for (int i=0;i<50;i++) {
int x = ran
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