登录之图片验证码生成检验

旧城等待， 2023-02-22 07:49 28阅读 0赞

<dependency>
                <groupId>net.pusuo</groupId>
                <artifactId>patchca</artifactId>
                <version>0.5.0</version>
                <scope>compile</scope>
            </dependency>

import org.apache.commons.codec.binary.Base64;
    import org.patchca.background.BackgroundFactory;
    import org.patchca.color.SingleColorFactory;
    import org.patchca.filter.predefined.CurvesRippleFilterFactory;
    import org.patchca.service.Captcha;
    import org.patchca.service.ConfigurableCaptchaService;
    import org.patchca.word.RandomWordFactory;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
    
    import javax.imageio.ImageIO;
    import java.awt.*;
    import java.awt.image.BufferedImage;
    import java.io.ByteArrayOutputStream;
    import java.io.IOException;
    
    /** * 启动程序 */
    @SpringBootApplication(exclude = {  DataSourceAutoConfiguration.class })
    public class Application
    { 
    
        private static final ConfigurableCaptchaService cs = new ConfigurableCaptchaService();
    
    
    
    
        static { 
    	    //设置字体颜色
            cs.setColorFactory(new SingleColorFactory(new Color(139, 83, 246)));
            cs.setFilterFactory(new CurvesRippleFilterFactory(cs.getColorFactory()));
    	    //设置字体颜色
            cs.setWidth(130);
            cs.setHeight(60);
            RandomWordFactory randomWordFactory = new RandomWordFactory();
            randomWordFactory.setMaxLength(4);
            randomWordFactory.setMinLength(4);
            cs.setWordFactory(randomWordFactory);
            //设置背景颜色
            cs.setBackgroundFactory( new BackgroundFactory() { 
                @Override
                public void fillBackground(BufferedImage image) { 
                    Graphics graphics = image.getGraphics();
                    int imgWidth = image.getWidth();
                    int imgHeight = image.getHeight();
                    graphics.setColor(new Color(44, 44, 44));
                    graphics.fillRect(0, 0, imgWidth, imgHeight);
    			//可以设置 噪点 干扰线。。。。
                }
            });
        }
        public static void main(String[] args) throws IOException { 
             Captcha captcha = cs.getCaptcha();
            ByteArrayOutputStream outputStream = null;
            outputStream = new ByteArrayOutputStream();
            String msgId = captcha.getChallenge();
            ImageIO.write(captcha.getImage(), "png", outputStream);
            String images = "data:image/jpg;base64," + Base64.encodeBase64String(outputStream.toByteArray());
    		//图片编码
            System.out.println(images);
            //图片校验用id
            System.out.println(msgId);
        }
    }

测试

// 将 data 换成 images 输出值，就可以看到了
    
    <div class="col-sm-3"> <img class="googleQrcode" style="width: 100px" src="data"></div>