SpringBoot使用kaptcha验证码

小鱼儿 2022-05-27 03:29 291阅读 0赞

在pom.xml配置

<dependency>
                <groupId>com.github.axet</groupId>
                <artifactId>kaptcha</artifactId>
                <version>0.0.9</version>
            </dependency>

配置kaptcha

package gm.config;
    
    import com.google.code.kaptcha.impl.DefaultKaptcha;
    import com.google.code.kaptcha.util.Config;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import java.util.Properties;
    
    
    /** * 生成验证码配置 */
    @Configuration
    public class KaptchaConfig { 
        @Bean
        public DefaultKaptcha producer() {
            Properties properties = new Properties();
            properties.put("kaptcha.border", "no");
            properties.put("kaptcha.textproducer.font.color", "black");
            properties.put("kaptcha.textproducer.char.space", "5");
            Config config = new Config(properties);
            DefaultKaptcha defaultKaptcha = new DefaultKaptcha();
            defaultKaptcha.setConfig(config);
            return defaultKaptcha;
        }
    }

前端视图的src链接处理,生成验证码

// 获取验证码
        @GetMapping("/kaptcha")
        public void kaptcha(HttpServletResponse response, HttpServletRequest request) throws Exception {
            response.setHeader("Cache-Control", "no-store, no-cache");
            response.setContentType("image/jpeg");
            String text = defaultKaptcha.createText();
            BufferedImage image = defaultKaptcha.createImage(text);
            request.getSession().setAttribute("code", text);
            ServletOutputStream out = response.getOutputStream();
            ImageIO.write(image, "jpg", out);
            out.close();
        }