引入依赖
<dependency>
<groupId>com.github.axet</groupId>
<artifactId>kaptcha</artifactId>
<version>0.0.9</version>
</dependency>
Spring-mvc.xml添加
<!-- Kaptcha验证码生成器 -->
<bean name="producer" class="com.google.code.kaptcha.impl.DefaultKaptcha" scope="singleton">
<property name="config">
<bean class="com.google.code.kaptcha.util.Config">
<constructor-arg>
<props>
<prop key="kaptcha.border">no</prop>
<prop key="kaptcha.textproducer.font.color">black</prop>
<prop key="kaptcha.textproducer.char.space">5</prop>
<prop key="kaptcha.textproducer.char.length">5</prop>
<prop key="kaptcha.obscurificator.impl">com.google.code.kaptcha.impl.ShadowGimpy</prop>
<!-- kaptcha.border 是否有边框 默认为true 我们可以自己设置yes，no
kaptcha.border.color 边框颜色 默认为Color.BLACK
kaptcha.border.thickness 边框粗细度 默认为1
kaptcha.producer.impl 验证码生成器 默认为DefaultKaptcha
kaptcha.textproducer.impl 验证码文本生成器 默认为DefaultTextCreator
kaptcha.textproducer.char.string 验证码文本字符内容范围 默认为abcde2345678gfynmnpwx
kaptcha.textproducer.char.length 验证码文本字符长度 默认为5
kaptcha.textproducer.font.names 验证码文本字体样式 默认为new Font("Arial", 1, fontSize), new Font("Courier", 1, fontSize)
kaptcha.textproducer.font.size 验证码文本字符大小 默认为40
kaptcha.textproducer.font.color 验证码文本字符颜色 默认为Color.BLACK
kaptcha.textproducer.char.space 验证码文本字符间距 默认为2
kaptcha.noise.impl 验证码噪点生成对象 默认为DefaultNoise
kaptcha.noise.color 验证码噪点颜色 默认为Color.BLACK
kaptcha.obscurificator.impl 验证码样式引擎 默认为WaterRipple
kaptcha.word.impl 验证码文本字符渲染 默认为DefaultWordRenderer
kaptcha.background.impl 验证码背景生成器 默认为DefaultBackground
kaptcha.background.clear.from 验证码背景颜色渐进 默认为Color.LIGHT_GRAY
kaptcha.background.clear.to 验证码背景颜色渐进 默认为Color.WHITE
kaptcha.image.width 验证码图片宽度 默认为200
kaptcha.image.height 验证码图片高度 默认为50 -->
</props>
</constructor-arg>
</bean>
</property>
</bean>
生成验证码
@RequestMapping(value = "/captchaImg", method = RequestMethod.GET)
public void image(HttpServletRequest request, HttpServletResponse response) throws Exception {
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");
String capText = captchaProducer.createText();
//生成图片验证码
BufferedImage image = captchaProducer.createImage(capText);
//保存到shiro session
SecurityUtils.getSubject().getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
ServletOutputStream out = response.getOutputStream();
ImageIO.write(image, "jpg", out);
try {
out.flush();
} finally {
out.close();
}
}
验证验证码
@RequestMapping(value = "/captchaValid", method = RequestMethod.POST)
@ResponseBody
public Message captchaValid(String captcha) throws Exception {
String kaptcha = SecurityUtils.getSubject().getSession().getAttribute(Constants.KAPTCHA_SESSION_KEY).toString();
SecurityUtils.getSubject().getSession().removeAttribute(Constants.KAPTCHA_SESSION_KEY);
if (captcha.equalsIgnoreCase(kaptcha)) {
return Message.success("验证成功");
}
return Message.error("验证码不正确");
}
合并后为
import com.google.code.kaptcha.Constants;
import com.google.code.kaptcha.Producer;
import org.apache.shiro.SecurityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
/**
* Controller - 验证码
*
* @author liaoyx
* @version 1.0
*/
@Controller("mgmtCaptchaController")
@RequestMapping("/mgmt/captcha")
public class CaptchaController extends BaseController {
private Producer captchaProducer = null;
@Autowired
public void setCaptchaProducer(Producer captchaProducer) {
this.captchaProducer = captchaProducer;
}
@RequestMapping(value = "/captchaImg", method = RequestMethod.GET)
public void image(HttpServletRequest request, HttpServletResponse response) throws Exception {
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");
String capText = captchaProducer.createText();
//生成图片验证码
BufferedImage image = captchaProducer.createImage(capText);
//保存到shiro session
SecurityUtils.getSubject().getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
ServletOutputStream out = response.getOutputStream();
ImageIO.write(image, "jpg", out);
try {
out.flush();
} finally {
out.close();
}
}
@RequestMapping(value = "/captchaValid", method = RequestMethod.POST)
@ResponseBody
public Message captchaValid(String captcha) throws Exception {
String kaptcha = SecurityUtils.getSubject().getSession().getAttribute(Constants.KAPTCHA_SESSION_KEY).toString();
SecurityUtils.getSubject().getSession().removeAttribute(Constants.KAPTCHA_SESSION_KEY);
if (captcha.equalsIgnoreCase(kaptcha)) {
return R.success("验证成功");
}
return R.error("验证码不正确");
}
}
参数详解
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