java web验证码功能实现

灰太狼 2022-06-09 07:36 376阅读 0赞

<servlet>           
            <servlet-name>KaptchaServlet</servlet-name>
            <servlet-class>com.google.code.kaptcha.servlet.KaptchaServlet</servlet-class>
            <init-param>    
                <param-name>kaptcha.border</param-name>
                <param-value>no</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.border.color</param-name>
                <param-value>105,179,90</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.textproducer.font.color</param-name>
                <param-value>red</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.image.width</param-name>
                <param-value>130</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.image.height</param-name>
                <param-value>38</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.textproducer.font.size</param-name>
                <param-value>30</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.session.key</param-name>
                <param-value>rand</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.textproducer.char.space</param-name>
                <param-value>2</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.textproducer.char.length</param-name>
                <param-value>4</param-value>
            </init-param>
            <init-param>    
                <param-name>kaptcha.textproducer.font.names</param-name>
                <param-value>宋体,楷体,微软雅黑</param-value>
            </init-param>
        </servlet>
        <servlet-mapping>
            <servlet-name>KaptchaServlet</servlet-name>
            <url-pattern>/captcha.jpg</url-pattern>
        </servlet-mapping>