#验证码#

gistfile1.txt

jar:3
jcaptcha-2.0-alpha-1-SNAPSHOT.jar
jcaptcha-api-1.0.jar
jcaptcha-integration-simple-servlet-2.0-alpha-1-SNAPSHOT.jar

<form action="pay2" method="post">
      	<input type="hidden" name="token" value="${requestScope.request_token }"/>
    		输入支付金额：<input type="text" name="money"/><br>
    		请输入验证码：<input type="text" name="code" value=""/><br/>
    		<img alt="验证码" src="/jcaptcha.jpg" id="img">
    		<a href="javascript:;" id="showCode">看不清</a><br>
    		
    		<input type="submit" value="支付">
    	</form>
    	<script type="text/javascript" src="/static/js/jquery-1.9.1.min.js"></script>
    	<script type="text/javascript">
    		$(function(){
    			$("#showCode").click(function(){
    				$("#img").attr("src","/jcaptcha.jpg?xx="+new Date().getTime());
    			});
    		});
    	</script>

<servlet> 
         <servlet-name>jcaptcha</servlet-name> 
         <servlet-class>com.octo.captcha.module.servlet.image.SimpleImageCaptchaServlet</servlet-class> 
 </servlet>
<servlet-mapping> 
         <servlet-name>jcaptcha</servlet-name> 
         <url-pattern>/jcaptcha.jpg</url-pattern> 
 </servlet-mapping>