用Servlet做的股票走势图代码？

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");
int x = 450;

int x1 = 57;
int x2 = 460;
int y = 400;
int salary = 0;
int month = 0;
int x3 = 47;


BufferedImage image = new BufferedImage(600,500,BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();

g.setColor(Color.pink);
g.fillRect(0,0,600,500);

g.setColor(Color.blue);
g.drawLine(60,450, 60,10);//点（60，450）到点（60，10）的长度也就是虚拟y轴
g.drawLine(60, 10, 55, 15);//在虚拟y轴上添加左箭头
g.drawLine(60,10, 65, 15);//在虚拟y轴上添加右箭头
//g.drawLine(x1, y1, x2, y2);

for(int i = 0; i < 10;i ++){
g.drawLine(60, x = x - 42, 52, x);
salary = salary + 1;
g.drawString(salary + "亿元 ",0,x2 = x2 - 43);

}

for(int i = 0; i < 12;i ++){
g.drawLine(x1 = x1 + 40,450,x1,455);
}

for(int i = 0; i < 12; i ++){
month = month + 1;
g.drawString(month + "月",x3 = x3 + 37 , 470);

}

int[] cc = new int[]{new Random().nextInt(450),new Random().nextInt(450)
,new Random().nextInt(450),new Random().nextInt(450)
,new Random().nextInt(450),new Random().nextInt(450)
,new Random().nextInt(450),new Random().nextInt(450)
,new Random().nextInt(450),new Random().nextInt(450)
,new Random().nextInt(450),new Random().nextInt(450)
,new Random().nextInt(450),new Random().nextInt(450)};
int aa = 87;
int bb = 300;
int x4 = 57;
for(int i = 0; i < 13; i ++){

int aaa = cc[i];
int bbb = cc[i+1];
g.drawLine(x4=x4+40,aaa,x4+40,bbb);
}

g.drawLine(60, 450, 540, 450);//点（60，450）到点（450，450）的长度也就是虚拟x轴
g.drawLine(540,450,534,455);// 在虚拟x轴上添加上箭头
g.drawLine(540,450,534,445);// 在虚拟x轴上添加下箭头
//g.drawLine(x1, y1, x2, y2);




//图标内的坐标点！










HttpSession session = request.getSession();
session.setAttribute("hand","");
ImageIO.write(image, "JPEG",response.getOutputStream());

}