SpringBoot使用kaptcha验证码

在pom.xml配置

        <!-- 验证码 -->
        <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();
    }