java 谁能给我画图组成的股市分析代码?

答案：package com.hbsoft;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Random;
import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class CaptchaServlet extends HttpServlet {
 public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  this.doPost(request, response);
 }
 public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  response.setHeader("pragma","no-cache");
  response.setHeader("cache-control","no-cache");
  response.setHeader("expires","0");
  
  response.setContentType("image/jpeg");
  BufferedImage image = new BufferedImage(100,20,BufferedImage.TYPE_INT_RGB);
  Graphics g = image.getGraphics();
  
  Random random = new Random();
  
  g.setColor(Color.pink);
  g.fillRect(0,0,100,80);
  
  int[] m = new int[4];
  
  String[] str = new String[4];
  
  
  
  for(int i = 0; i < 4; i ++){
   m[i] = random.nextInt(10);
   System.out.println(m[i]);
  }
  for(int i = 0; i < 4; i ++){
   int itemp = random.nextInt(26) + 65;
   char temp = (char)itemp;
   str[i] = String.valueOf(temp);
   System.out.println(str[i]);
  }
  String strx = "";
  for(int i = 0; i < 4;i++){
   strx = strx + str[i] + m[i];
  }
  HashSet hs = new HashSet();
  for(int i = 0;i < 8; i++){
   hs.add(String.valueOf(strx.charAt(i)));
  }
  Iterator ite = hs.iterator();
  String strmm = "";
  while(ite.hasNext()){
   strmm = strmm + ite.next();
  }
  
  System.out.println(strmm);
  g.setColor(Color.white);
  g.drawString(""+strmm, 10,10);
  
  
  HttpSession session = request.getSession();
  session.setAttribute("hand",strmm);
  ImageIO.write(image, "JPEG",response.getOutputStream());
 }
}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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