springboot集成kaptcha验证码

<!-- 验证码 -->
<!-- https://mvnrepository.com/artifact/com.github.penggle/kaptcha -->
<dependency>
    <groupId>com.github.penggle</groupId>
    <artifactId>kaptcha</artifactId>
    <version>2.3.2</version>
</dependency>

 1 package com.xiaostudy.shiro_test1.config;
 2 
 3 import com.google.code.kaptcha.impl.DefaultKaptcha;
 4 import com.google.code.kaptcha.util.Config;
 5 import org.springframework.context.annotation.Bean;
 6 import org.springframework.context.annotation.Configuration;
 7 
 8 import java.util.Properties;
 9 
10 /**
11  * Created with IntelliJ IDEA.
12  * User: Administrator
13  * Date: 2019/7/17
14  * Time: 23:46
15  * Description: No Description
16  */
17 @Configuration
18 public class KaptchaConfig {
19 
20     @Bean
21     public DefaultKaptcha getDefaultKaptcha(){
22         DefaultKaptcha defaultKaptcha = new DefaultKaptcha();
23         Properties properties = new Properties();
24         // 图片边框，合法值：yes[默认] , no
25         properties.setProperty("kaptcha.border", "yes");
26         // 边框颜色，合法值： r,g,b (and optional alpha) 或者 white,black,blue.默认black
27         properties.setProperty("kaptcha.border.color", "105,179,90");
28         // 边框厚度，合法值：>0，默认1
29 //        properties.setProperty("kaptcha.border.thickness", "1");
30         // 图片宽，默认200
31         properties.setProperty("kaptcha.image.width", "110");
32         // 图片高，默认50
33         properties.setProperty("kaptcha.image.height", "40");
34         // 字体大小，默认40px
35         properties.setProperty("kaptcha.textproducer.font.size", "30");
36         // 字体，默认Arial, Courier
37         properties.setProperty("kaptcha.textproducer.font.names", "宋体,楷体,微软雅黑");
38         // 字体颜色，合法值： r,g,b  或者 white,black,blue.默认black
39         properties.setProperty("kaptcha.textproducer.font.color", "blue");
40         // session key，默认KAPTCHA_SESSION_KEY
41         properties.setProperty("kaptcha.session.key", "code");
42         // session date，默认KAPTCHA_SESSION_DATE
43 //        properties.setProperty("kaptcha.session.date", "KAPTCHA_SESSION_DATE");
44         // 验证码长度，默认5
45         properties.setProperty("kaptcha.textproducer.char.length", "4");
46         // 文字间隔，默认2
47 //        properties.setProperty("kaptcha.textproducer.char.space", "2");
48         // 干扰 颜色，合法值： r,g,b 或者 white,black,blue.默认black
49 //        properties.setProperty("kaptcha.noise.color", "black");
50         // 更多可参考：https://blog.csdn.net/elephantboy/article/details/52795309
51 
52         Config config = new Config(properties);
53         defaultKaptcha.setConfig(config);
54 
55         return defaultKaptcha;
56     }
57 }

<img alt="验证码" onclick = "this.src='/defaultKaptcha?d='+new Date().getTime()" src="/defaultKaptcha" />

/**
 * 验证码请求
 * @param response
 * @param session
 * @throws Exception
 */
@RequestMapping("/defaultKaptcha")
public void defaultKaptcha(HttpServletResponse response,HttpSession session) {
    response.setDateHeader("Expires", 0);
    response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    response.addHeader("Cache-Control", "post-check=0, pre-check=0");
    response.setHeader("Pragma", "no-cache");
    response.setContentType("image/jpeg");
    String capText = captchaProducer.createText();
    //将验证码存到session
    session.setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
    BufferedImage bi = captchaProducer.createImage(capText);
    try {
        ServletOutputStream out = response.getOutputStream();
        ImageIO.write(bi, "jpg", out);
        out.flush();
        out.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

// 从session中拿到正确的验证码
String captchaId = (String) request.getSession().getAttribute(Constants.KAPTCHA_SESSION_KEY);
// 用户输入的验证码
String parameter = request.getParameter("vrifyCode");
// 下面就是匹配这两个是否相同