SpringBoot Integrated Kaptcha Verification Code

This article shares the specific code of SpringBoot integrated kaptcha verification code for your reference. The specific content is as follows

1.Kaptcha related introduction

Kaptcha is an open source project for verification code based on SimpleCaptcha.

2. Integration Solution

① Configuration dependencies in pom.xml

 <!-- Verification code--><dependency> <groupId>com.github.penggle</groupId> <artifactId>kaptcha</artifactId> <version>2.3.2</version></dependency>

②Configure verification code Kaptcha related settings

 @Configurationpublic 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", "Song font, Kai font, Microsoft Yahei"); Config config=new Config(properties); defaultKaptcha.setConfig(config); return defaultKaptcha; }}

or

Create myKaptcher.xml file under resources

 <?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"> <property name="config"> <bean> <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.image.height">50</prop> <prop key="kaptcha.image.height">50</prop> <prop key="kaptcha.image.height">50</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">Song font, Kai font, Microsoft Yahei</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>

Then load the configuration in the startup class Application

 @EnableTransactionManagement// Start annotation transaction management, which is equivalent to the xml configuration method <tx:annotation-driven />@SpringBootApplication@EnableScheduling// Start annotation timing task @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); }}

Both configuration methods are available in springboot;

③KaptchaController

 @CommonsLog@Controllerpublic 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); //Save the verification code to 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. Test the effect

The above is all the content of this article. I hope it will be helpful to everyone's learning and I hope everyone will support Wulin.com more.