配置使用Google验证码

青旅半醒 2021-12-03 05:45 333阅读 0赞

### 加入谷歌验证码的maven依赖 ###

<dependency>
                <groupId>com.github.axet</groupId>
                <artifactId>kaptcha</artifactId>
                <version>0.0.9</version>
            </dependency>

### spring配置文件中配置验证码属性 ###

<bean id="producer" 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">no</prop>
                            
                            <prop key="kaptcha.textproducer.font.color">black</prop>
                            
                            <prop key="kaptcha.textproducer.char.space">5</prop>
                        </props>
                    </constructor-arg>
                </bean>
            </property>
        </bean>

### Controller ###

@GetMapping("/captcha.do")
        public void captcha(HttpServletResponse response) throws IOException {
            // 不缓存
            response.setHeader("Cache-Control","no-store,no-cache");
            // 相应格式
            response.setContentType("image/jpeg");
            // 生成文字
            String imageText = producer.createText();
            // 生成图片
            BufferedImage image = producer.createImage(imageText);
            // 我是用的是shiro
            Session session = SecurityUtils.getSubject().getSession();
            session.setAttribute(Constants.KAPTCHA_SESSION_KEY,imageText);
    
            
            ServletOutputStream outputStream = response.getOutputStream();
            ImageIO.write(image,"jpeg",outputStream);
            outputStream.flush();
        }

### JS刷新验证码 ###

function refreshImage() {
    		$.get("sys/user/captcha.do",{},function (result) {
    			$("#kaptcha").attr("src","sys/user/captcha.do");
    		});
    	}