SpringBoot集成kaptcha验证码

本文实例为大家分享了SpringBoot集成kaptcha验证码的具体代码，供大家参考，具体内容如下

1.kaptcha相关介绍

Kaptcha是一个基于SimpleCaptcha的验证码开源项目。

2.集成方案

①pom.xml中配置依赖

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

②配置验证码Kaptcha相关设置

@Configuration
public class kaptchaConfig {
 @Bean(name="captchaProducer")
 public DefaultKaptcha getKaptchaBean(){
   DefaultKaptcha defaultKaptcha=new DefaultKaptcha();
   Properties properties=new Properties();
   properties.setProperty("kaptcha.border", "yes");
   properties.setProperty("kaptcha.border.color", "105,179,90");
   properties.setProperty("kaptcha.textproducer.font.color", "blue");
   properties.setProperty("kaptcha.image.width", "125");
   properties.setProperty("kaptcha.image.height", "45");
   properties.setProperty("kaptcha.session.key", "code");
   properties.setProperty("kaptcha.textproducer.char.length", "4");
   properties.setProperty("kaptcha.textproducer.font.names", "宋体,楷体,微软雅黑");
   Config config=new Config(properties);
   defaultKaptcha.setConfig(config);
   return defaultKaptcha;
 }
}

或者

在resources下创建myKaptcher.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
 <bean id="captchaProducer" class="com.google.code.kaptcha.impl.DefaultKaptcha">
   <property name="config">
     <bean class="com.google.code.kaptcha.util.Config">
       <constructor-arg type="java.util.Properties">
         <props>
           <prop key = "kaptcha.border ">yes</prop>
           <prop key="kaptcha.border.color">105,179,90</prop>
           <prop key="kaptcha.textproducer.font.color">blue</prop>
           <prop key="kaptcha.image.width">100</prop>
           <prop key="kaptcha.image.height">50</prop>
           <prop key="kaptcha.textproducer.font.size">27</prop>
           <prop key="kaptcha.session.key">code</prop>
           <prop key="kaptcha.textproducer.char.length">4</prop>
           <prop key="kaptcha.textproducer.font.names">宋体,楷体,微软雅黑</prop>
           <prop key="kaptcha.textproducer.char.string">23456789ABCEFGHJKMNOPQRSTUVWXYZ</prop>
           <prop key="kaptcha.obscurificator.impl">com.google.code.kaptcha.impl.WaterRipple</prop>
           <prop key="kaptcha.noise.color">black</prop>
           <prop key="kaptcha.noise.impl">com.google.code.kaptcha.impl.NoNoise</prop>
           <!--<prop key="kaptcha.noise.impl">com.google.code.kaptcha.impl.DefaultNoise</prop>-->
           <prop key="kaptcha.background.clear.from">185,56,213</prop>
           <prop key="kaptcha.background.clear.to">white</prop>
           <prop key="kaptcha.textproducer.char.space">3</prop>
         </props>
       </constructor-arg>
     </bean>
   </property>
 </bean>
</beans>

然后在启动类Application中加载配置

@EnableTransactionManagement// 启动注解事务管理，等同于xml配置方式的 <tx:annotation-driven />
@SpringBootApplication
@EnableScheduling//启动注解定时任务
@MapperScan(basePackages = "com.shawn.mapper")
@ImportResource(locations={"classpath:mykaptcha.xml"})
public class Application extends SpringBootServletInitializer {

public static void main(String[] args) throws Exception {
   SpringApplication.run(Application.class, args);
 }

}

两种配置方式在springboot中均可；

③KaptchaController

@CommonsLog
@Controller
public class KaptchaController extends BaseController {
 @Autowired
 private Producer captchaProducer;
 @GetMapping("/getKaptchaImage")
 public void getKaptchaImage() throws Exception {

response.setDateHeader("Expires", 0);

// Set standard HTTP/1.1 no-cache headers.
   response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
   // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
   response.addHeader("Cache-Control", "post-check=0, pre-check=0");
   // Set standard HTTP/1.0 no-cache header.
   response.setHeader("Pragma", "no-cache");
   // return a jpeg
   response.setContentType("image/jpeg");
   // create the text for the image
   String capText = captchaProducer.createText();
   // store the text in the session
   //request.getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
   //将验证码存到session
   session.setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
   log.info(capText);
   // create the image with the text
   BufferedImage bi = captchaProducer.createImage(capText);
   ServletOutputStream out = response.getOutputStream();
   // write the data out
   ImageIO.write(bi, "jpg", out);
   try {
     out.flush();
   } finally {
     out.close();
   }
 }
}

3.测试效果

来源：https://blog.csdn.net/zhangxing52077/article/details/75270259