我要评论当前使用框架 SpringBoot
@RequestMapping("/checkCode")
public void checkCode(HttpServletResponse response,HttpServletRequest request){
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","No-cache");
response.setDateHeader("Expires",0);
response.setContentType("image/jpeg");
int width = 60 , height = 30;
//创建一个图像，宽60 高30
BufferedImage image = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
Random random = new Random();
g.setColor(getRandomColor(200,250));
g.fillRect(0,0,width,height);
g.setFont(new Font("Times New Roman",Font.PLAIN,18));
g.setColor(getRandomColor(160,200));
//干扰线生成
for (int i = 0; i < 10; i++) {
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(12);
int yl = random.nextInt(12);
g.drawLine(x,y,x+xl,y+yl);
}
String strCode = "";
for (int i = 0; i < 4; i++) {
String strNumber = String.valueOf(random.nextInt(10));
strCode = strCode+strNumber;
//设置字体颜色
g.drawString(strNumber,13*i+6,20);
}
System.out.println("当前验证码"+strCode);
request.getSession().setAttribute("Code",strCode);
g.dispose();
try {
ImageIO.write(image,"JPEG",response.getOutputStream());
response.getOutputStream().flush();
response.getOutputStream().close();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 随机获取颜色的方法
* @return
*/
public Color getRandomColor (int fc , int bc){
Random random = new Random();
Color reandomColor = null;
if(fc > 255){
fc = 255;
}
if(bc > 255){
bc = 255;
}
int r =fc + random.nextInt(bc-fc);
int g = fc + random.nextInt(bc-fc);
int b = fc + random.nextInt(bc-fc);
reandomColor = new Color(r,g,b);
return reandomColor;
}本文地址：https://blog.csdn.net/dalter/article/details/108240096
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