Meven的pom.xml中加入
<!--验证码-->
<dependency>
<groupId>com.github.axet</groupId>
<artifactId>kaptcha</artifactId>
<version>0.0.9</version>
</dependency>
Spring中声明
<bean id="captchaProducer" class="com.google.code.kaptcha.impl.DefaultKaptcha">
<property name="config">
<bean class="com.google.code.kaptcha.util.Config">
<constructor-arg>
<props>
<prop key="kaptcha.border">yes</prop>
<prop key="kaptcha.border.color">105,179,90</prop>
<prop key="kaptcha.textproducer.font.color">blue</prop>
<prop key="kaptcha.image.width">125</prop>
<prop key="kaptcha.image.height">60</prop>
<prop key="kaptcha.textproducer.font.size">45</prop>
<prop key="kaptcha.session.key">code</prop>
<prop key="kaptcha.textproducer.char.length">4</prop>
<prop key="kaptcha.textproducer.font.names">宋体,楷体,微软雅黑</prop>
</props>
</constructor-arg>
</bean>
</property>
</bean>
编写Controller
@Controller
@RequestMapping("/account")
public class AccountController extends AdminBaseController {
Producer captchaProducer = null;
@Autowired
public void setCaptchaProducer(Producer captchaProducer) {
this.captchaProducer = captchaProducer;
}
@RequestMapping("/kaptchaGet")
public ModelAndView doGet(HttpServletRequest request, HttpServletResponse response) throws Exception {
response.setDateHeader("Expires", 0);
// Set standard HTTP/1.1 no-cache headers.
response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
// Set IE extended HTTP/1.1 no-cache headers (use addHeader).
response.addHeader("Cache-Control", "post-check=0, pre-check=0");
// Set standard HTTP/1.0 no-cache header.
response.setHeader("Pragma", "no-cache");
// return a jpeg
response.setContentType("image/jpeg");
// create the text for the image
String capText = captchaProducer.createText();
// store the text in the session
request.getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
// create the image with the text
BufferedImage bi = captchaProducer.createImage(capText);
ServletOutputStream out = response.getOutputStream();
// write the data out
ImageIO.write(bi, "jpg", out);
try {
out.flush();
} finally {
out.close();
}
System.out.println("Captchca:"+request.getSession().getAttribute(Constants.KAPTCHA_SESSION_KEY));
return null;
}
@ResponseBody
@RequestMapping(value = "/login", method = RequestMethod.POST)
public AjaxResult login(LoginModel model,HttpServletRequest request) {
String captcha = (String) request.getSession().getAttribute(Constants.KAPTCHA_SESSION_KEY);
/*if (!model.getCaptcha().equals(captcha))
return ajaxResult(false, "验证码不正确");*/
......
return ajaxResult(true,"");
}
}
login界面
<div class="form-group">
<label class="control-label visible-ie8 visible-ie9">验证码</label>
<input class="form-control placeholder-no-fix validate[required]" type="text" autocomplete="off"
placeholder="验证码" name="captcha"/>
<div class="input-icon">
<img id="captcha1" alt="如果看不清楚,请单击图片刷新!" src="/account/kaptchaGet">
<a href="javascript:;" onclick="refreshCaptcha()">点击刷新</a>
</div>
</div>
Js
function refreshCaptcha(){
var ran = Math.floor(Math.random() * 100)
$('#captcha1').attr('src','/account/kaptchaGet?' + ran);
}
完成效果