springboot——kaptcha

曾经终败给现在 2023-06-11 07:25 19阅读 0赞

导入包：

<dependency>
    			<groupId>com.github.penggle</groupId>
    			<artifactId>kaptcha</artifactId>
    			<version>2.3.2</version>
    		</dependency>

配置类：

package com.now.community.community.config;
    
    import com.google.code.kaptcha.Producer;
    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;
    
    @Configuration
    public class KaptchaConfig {
    
        @Bean
        public Producer kaptchaProducer() {
            Properties properties = new Properties();
            properties.setProperty("kaptcha.image.width", "100");
            properties.setProperty("kaptcha.image.height", "40");
            properties.setProperty("kaptcha.textproducer.font.size", "32");
            properties.setProperty("kaptcha.textproducer.font.color", "0,0,0");
            properties.setProperty("kaptcha.textproducer.char.string", "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");
            properties.setProperty("kaptcha.textproducer.char.length", "4");
            properties.setProperty("kaptcha.noise.impl", "com.google.code.kaptcha.impl.NoNoise");
    
            DefaultKaptcha kaptcha = new DefaultKaptcha();
            Config config = new Config(properties);
            kaptcha.setConfig(config);
            return kaptcha;
        }
    
    }

Controller

//验证码
        @RequestMapping(path = "/kaptcha", method = RequestMethod.GET)
        public void getKaptcha(HttpServletResponse response/*, HttpSession session*/) {
            // 生成验证码
            String text = kaptchaProducer.createText();
            BufferedImage image = kaptchaProducer.createImage(text);
    
            //将验证码存入session
            session.setAttribute("kaptcha", text);
    
            // 将图片输出给浏览器
            response.setContentType("image/png");
            try {
                OutputStream os = response.getOutputStream();
                ImageIO.write(image, "png", os);
            } catch (IOException e) {
                logger.error("响应验证码失败:" + e.getMessage());
            }
        }

html

<img th:src="@{/kaptcha}" id="kaptcha" style="width:100px;height:40px;" class="mr-2"/>
    <a href="javascript:refresh_kaptcha();" class="font-size-12 align-bottom">刷新验证码</a>

js：

善意欺骗，随机数，更新。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9mYW50aWFuenVvLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70][]

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springboot——kaptcha

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