Kaptcha 框架介绍
- 谷歌开源的一个可高度配置的实用验证 码生成工具
- 验证码的字体/大小/颜色
- 验证码内容的范围(数字,字母,中文汉字!)
- 验证码图片的大小,边框,边框粗细,边框颜色
- 验证码的干扰线 验证码的样式(⻥眼样式、3D、普通模糊)
导入pom文件
<!--kaptcha依赖包--> <dependency> <groupId>com.baomidou</groupId> <artifactId>kaptcha-spring-boot-starter</artifactId> <version>1.1.0</version> </dependency>
加入一个工具类
import com.google.code.kaptcha.Constants; import com.google.code.kaptcha.impl.DefaultKaptcha; import com.google.code.kaptcha.util.Config; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import java.util.Properties; @Configuration public class CaptchaConfig { /** * 验证码配置 * Kaptcha配置类名 * * @return */ @Bean @Qualifier("captchaProducer") public DefaultKaptcha kaptcha() { DefaultKaptcha kaptcha = new DefaultKaptcha(); Properties properties = new Properties(); //边框 // properties.setProperty(Constants.KAPTCHA_BORDER, "yes"); // properties.setProperty(Constants.KAPTCHA_BORDER_COLOR, "220,220,220"); // //properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_FONT_COLOR, "38,29,12"); //宽高 // properties.setProperty(Constants.KAPTCHA_IMAGE_WIDTH, "147"); // properties.setProperty(Constants.KAPTCHA_IMAGE_HEIGHT, "34"); // properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_FONT_SIZE, "25"); // //properties.setProperty(Constants.KAPTCHA_SESSION_KEY, "code"); //验证码个数 properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "4"); // properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_FONT_NAMES, "Courier"); //字体间隔 properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_CHAR_SPACE,"8"); //干扰线颜色 // properties.setProperty(Constants.KAPTCHA_NOISE_COLOR, "white"); //干扰实现类 properties.setProperty(Constants.KAPTCHA_NOISE_IMPL, "com.google.code.kaptcha.impl.NoNoise"); //图片样式 properties.setProperty(Constants.KAPTCHA_OBSCURIFICATOR_IMPL, "com.google.code.kaptcha.impl.WaterRipple"); //文字来源 properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_CHAR_STRING, "0123456789"); Config config = new Config(properties); kaptcha.setConfig(config); return kaptcha; } }
搞一个测试类
import com.google.code.kaptcha.Producer; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import lombok.extern.slf4j.Slf4j; import net.xdclass.enums.BizCodeEnum; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import javax.imageio.ImageIO; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.awt.image.BufferedImage; import java.io.IOException; import java.util.concurrent.TimeUnit; @Api(tags = "通知模块") @RestController @RequestMapping("/api/user/v1") @Slf4j public class NotifyController { @Autowired private Producer captchaProducer; /** * 获取图形验证码 * @param request * @param response */ @ApiOperation("获取图形验证码") @GetMapping("captcha") public void getCaptcha(HttpServletRequest request, HttpServletResponse response){ String captchaText = captchaProducer.createText(); log.info("图形验证码:{}",captchaText); BufferedImage bufferedImage = captchaProducer.createImage(captchaText); ServletOutputStream outputStream = null; try { outputStream = response.getOutputStream(); ImageIO.write(bufferedImage,"jpg",outputStream); outputStream.flush(); outputStream.close(); } catch (IOException e) { log.error("获取图形验证码异常:{}",e); } } }
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