kaptcha制作验证码的方法

com.github.axet.kaptcha制作验证码的方法

导入jar包com.github.axet生成法

①导包

		<!-- 验证码 --><dependency><groupId>com.github.axet</groupId><artifactId>kaptcha</artifactId><version>0.0.9</version></dependency>

②创建配置类，用来配置验证码的生成

@Configuration
public class CaptchaProducer {@Beanpublic DefaultKaptcha producer(){Properties properties = new Properties();properties.put("kaptcha.border","yes");properties.put("kaptcha.border.color","105,179,90");properties.put("kaptcha.textproducer.font.color","72,118,255");properties.put("kaptcha.obscurificator.impl","com.google.code.kaptcha.impl.WaterRipple");properties.put("kaptcha.noise.impl","com.google.code.kaptcha.impl.DefaultNoise");properties.put("kaptcha.noise.color","72,118,255");properties.put("kaptcha.image.width","125");properties.put("kaptcha.image.height","50");properties.put("kaptcha.textproducer.font.size","40");properties.put("kaptcha.textproducer.char.length","4");properties.put("kaptcha.textproducer.char.font.names","Arial, Courier");properties.put("kaptcha.textproducer.char.space","4");properties.put("kaptcha.textproducer.impl","com.google.code.kaptcha.text.impl.DefaultTextCreator");properties.put("kaptcha.session.key","code");Config config = new Config(properties);DefaultKaptcha defaultKaptcha = new DefaultKaptcha();defaultKaptcha.setConfig(config);return defaultKaptcha;}
}

③调用图片生成的类（一般为Controller层）

@Slf4j
@Api(description = "校验码控制器")
@RestController
public class VerificationCodeController {private static final Logger logger = LoggerFactory.getLogger(VerificationCodeController.class);@Autowiredprivate Producer producer;@RequestMapping(value = {"/fis/login/genCode.action"}, method = {RequestMethod.POST, RequestMethod.GET})@ApiOperation(value = "获取检验码")public void captcha(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {HttpSession session = request.getSession();response.setDateHeader("Expires", 0);response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");response.addHeader("Cache-Control", "post-check=0, pre-check=0");response.setHeader("Pragma", "no-cache");response.setContentType("image/jpeg");//生成图片验证码Object[] objs = ImageCodeUtil.createImage();session.setAttribute(SessionConst.VERIFICATION_CODE, objs[0]);ServletOutputStream out = response.getOutputStream();ImageIO.write((BufferedImage) objs[1], "jpg", out);}@ApiOperation(value = "校验图形验证码")@RequestMapping(value = {"/fis/login/chkGenCode.action"}, method = {RequestMethod.POST})public void chkImgCode(@Context HttpServletRequest request, @Context HttpServletResponse response,@ApiParam(value = "图形验证码信息", required = true, type = "") @RequestBody String inParam) throws Exception {logger.debug(">HTTP Request param : {}", inParam);HttpSession session = request.getSession();if (StringUtils.isEmpty(inParam)) {throw new WsgException("入参不可为空。");}logger.debug(">HTTP Request param : {}", inParam);MBean mBean1 = new MBean(inParam);Map<String, Object> imgCodeMap = mBean1.getBody();String imgCode = (String) imgCodeMap.get("imgCheckCode");// 校验验证码if (!imgCode.equals(session.getAttribute(SessionConst.VERIFICATION_CODE))) {throw new WsgException(WsgError.VERIFYCODE_ERROR.getCode(), "图形验证码错误。");}MBean out = new MBean();out.setBody("RETURN_CODE", Constants.RETURN_CODE.OTHER_SUCCESS);ResponseUtil.wirteString(response, out.toString());}

Constant	描述	默认值
kaptcha.border	图片边框，合法值：yes , no	yes
kaptcha.border.color	边框颜色，合法值： r,g,b (and optional alpha) 或者 white,black,blue.	black
kaptcha.border.thickness	边框厚度，合法值：>0	1
kaptcha.image.width	图片宽	200
kaptcha.image.height	图片高	50
kaptcha.producer.impl	图片实现类	com.google.code.kaptcha.impl.DefaultKaptcha
kaptcha.textproducer.impl	文本实现类	com.google.code.kaptcha.text.impl.DefaultTextCreator
kaptcha.textproducer.char.string	文本集合，验证码值从此集合中获取	abcde2345678gfynmnpwx
kaptcha.textproducer.char.length	验证码长度	5
kaptcha.textproducer.font.names	字体	Arial, Courier
kaptcha.textproducer.font.size	字体大小	40px.
kaptcha.textproducer.font.color	字体颜色，合法值： r,g,b 或者 white,black,blue.	black
kaptcha.textproducer.char.space	文字间隔	2
kaptcha.noise.impl	干扰实现类	com.google.code.kaptcha.impl.DefaultNoise
kaptcha.noise.color	干扰颜色，合法值： r,g,b 或者 white,black,blue.	black
kaptcha.obscurificator.impl	图片样式：水纹com.google.code.kaptcha.impl.WaterRipple 鱼眼com.google.code.kaptcha.impl.FishEyeGimpy 阴影com.google.code.kaptcha.impl.ShadowGimpy	com.google.code.kaptcha.impl.WaterRipple
kaptcha.background.impl	背景实现类	com.google.code.kaptcha.impl.DefaultBackground
kaptcha.background.clear.from	背景颜色渐变，开始颜色	light grey
kaptcha.background.clear.to	背景颜色渐变，结束颜色	white
kaptcha.word.impl	文字渲染器	com.google.code.kaptcha.text.impl.DefaultWordRenderer
kaptcha.session.key	session key	KAPTCHA_SESSION_KEY
kaptcha.session.date	session date	KAPTCHA_SESSION_DATE