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分类: Java

2009-02-04 09:50:59

   JCaptcha实施Captcha Test的策略非常多。比如:它提供了ImageCaptchaService策略接口,这是借助图片(文字)实施Captcha Test的重要接口。借助于它定义的getImageChallengeForId()方法,我们能够返回图片(文字)信息,与此同时,如果开发者将Captcha Test的输入结果和这次测试对应的Id一并提供给CaptchaService定义的validateResponseForId()方法则JCaptcha将真正能够辨认出操作目标资源的具体类型。
例子:
首先:使用了常用的DefaultManageableImageCaptchaService,实现了单例模式:

package sample;
import com.octo.captcha.service.image.DefaultManageableImageCaptchaService;
import com.octo.captcha.service.image.ImageCaptchaService;
/**
 *
 * @author worldheart
 *
 */

public class JCaptchaServiceSingleton {
    
    private static ImageCaptchaService imageCaptchaService =
            new DefaultManageableImageCaptchaService();
    
    public static ImageCaptchaService getInstance(){
        return imageCaptchaService;
    }   
}                                                                                


其次:JImageCaptchaServlet的doGet方法

package sample;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.octo.captcha.service.CaptchaServiceException;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
 *
 * @author worldheart
 *
 */

public class JImageCaptchaServlet extends HttpServlet {    

    private static final long serialVersionUID = -5573583398891222199L;
    
    protected static final Log log = LogFactory.getLog(JImageCaptchaServlet.class);

    public void init(ServletConfig servletConfig) throws ServletException {
        super.init(servletConfig);
    }

    protected void doGet(HttpServletRequest httpServletRequest,
            HttpServletResponse httpServletResponse) throws ServletException,
            IOException {
        byte[] captchaChallengeAsJpeg = null;
        //存储Captcha Test使用的图片

        ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
        
        try {
            //借助于HttpSession ID存储Captcha ID,开发者也可以借助于其他惟一值

            String captchaId = httpServletRequest.getSession().getId();
            
            //获得Captcha Test使用的图片内容

            BufferedImage challenge = JCaptchaServiceSingleton.getInstance()
                    .getImageChallengeForID(captchaId, httpServletRequest.getLocale());

            //输出JPEG格式

            JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
            
            jpegEncoder.encode(challenge);
        } catch (IllegalArgumentException e) {
            log.error(e);
            httpServletResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        } catch (CaptchaServiceException e) {
            log.error(e);
            httpServletResponse.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        }

        captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

        //确保Captcha Test的安全性、可靠性

        httpServletResponse.setHeader("Cache-Control", "no-store");
        httpServletResponse.setHeader("Pragma", "no-cache");
        httpServletResponse.setDateHeader("Expires", 0);
        
        //输出JPEG图片

        httpServletResponse.setContentType("image/jpeg");
        
        ServletOutputStream responseOutputStream = httpServletResponse.getOutputStream();
        
        responseOutputStream.write(captchaChallengeAsJpeg);
        responseOutputStream.flush();
        responseOutputStream.close();    
    }

}

然后:在web.xml中配置servlet


<servlet>
        <servlet-name>jcaptcha</servlet-name>
        <servlet-class>sample.JImageCaptchaServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>contacts</servlet-name>
        <url-pattern>*.htm</url-pattern>
     </servlet-mapping>
     
     <servlet-mapping>
        <servlet-name>jcaptcha</servlet-name>
        <url-pattern>/jcaptcha</url-pattern>
    </servlet-mapping>

最后:编写客户端页面:


<%@page pageEncoding="GBK" contentType="text/html; charset=GBK" %>
<%@ page import="sample.JCaptchaServiceSingleton, com.octo.captcha.service.CaptchaServiceException" %>
<html>
    <head>
        <title>JCaptcha测试</title>
    </head>
    <body>
        <h1>Captcha Test测试</h1>
        <form action="jcaptcha.jsp" method="post">
             <table width="95%" bgcolor="f8f8ff" border="0" cellspacing="0" cellpadding="5">
             <tr>
             <td alignment="right" width="30%">
                 请将图片中显示的内容填充到输入框中:
             </td>
             <td width="70%">
             <img src="jcaptcha"/><br><br>
             <input type="text" name="jcaptcharesponse" value="">
             </td>
             </tr>
             </table>
             <br>
            <%
            String jcaptcharesponse = request.getParameter("jcaptcharesponse");
         if (jcaptcharesponse != null && jcaptcharesponse.trim().length() > 0) {
                         Boolean isResponseCorrect = Boolean.FALSE;
                        String captchaId = session.getId();
                        try {
                            isResponseCorrect =
                                JCaptchaServiceSingleton.getInstance().
                                    validateResponseForID(captchaId, jcaptcharesponse);
                            if(isResponseCorrect.booleanValue()){
            %>
         <font color="green"><%= captchaId %>(HttpSession ID),
                 <%= jcaptcharesponse %>(jcaptcharesponse)成功通过Captcha Test!
         </font><br><br>
            <%                                
                            } else{
            %>
            <font color="red"><%= captchaId %>(HttpSession ID),
                <%= jcaptcharesponse %>(jcaptcharesponse)未能通过Captcha Test!
         </font><br><br>
            <%
                            }
                        } catch (CaptchaServiceException e) {
                            ;
                        }
         }
         %>            
            <input type="submit" value="提交" />
        </form>
    </body>
</html>


JCaptcha与spring的集成

首先:为了使的DefaultManageableImageCaptchaService能够享受到spring DI的乐趣,我们要改造先前提供的JImageCaptchaServlet


package sample;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import com.octo.captcha.service.image.ImageCaptchaService;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
 *
 * @author worldheart
 *
 */

public class JCaptchaImageController implements Controller, InitializingBean {
    
    private ImageCaptchaService imageCaptchaService;

    public void afterPropertiesSet() throws Exception {
        Assert.notNull(this.imageCaptchaService);
    }

    public ModelAndView handleRequest(HttpServletRequest httpServletRequest,
                HttpServletResponse response) throws Exception {
        byte[] captchaChallengeAsJpeg = null;

        ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();

        //获得HttpSession的ID

        String captchaId = httpServletRequest.getSession().getId();

        BufferedImage challenge = this.imageCaptchaService.
                getImageChallengeForID(captchaId, httpServletRequest.getLocale());

        JPEGImageEncoder jpegEncoder =
                JPEGCodec.createJPEGEncoder(jpegOutputStream);
        jpegEncoder.encode(challenge);

        captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

        //配置响应结果的头信息,以确保Captcha Test的安全性、可靠性

        response.setHeader("Cache-Control", "no-store");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setContentType("image/jpeg");
        
        ServletOutputStream responseOutputStream =
                response.getOutputStream();
        
        responseOutputStream.write(captchaChallengeAsJpeg);
        responseOutputStream.flush();
        responseOutputStream.close();
        
        return null;
    }

    public ImageCaptchaService getImageCaptchaService() {
        return imageCaptchaService;
    }

    public void setImageCaptchaService(ImageCaptchaService imageCaptchaService) {
        this.imageCaptchaService = imageCaptchaService;
    }

}

其次:在提共了controller后,我们需要配置:


<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
               ....
                <prop key="/captchaImage.htm">
captchaImageCreateController</prop>
            </props>
        </property>
    </bean>
    
    <bean id="captchaImageCreateController"
     class="sample.JCaptchaImageController" >
     <property name="imageCaptchaService" ref="imageCaptchaService"/>
    </bean>
<bean id="imageCaptchaService"     class="com.octo.captcha.service.image.DefaultManageableImageCaptchaService" >    
    </bean>

如果访问/captchaImage.htm页面就会发现有彩色图片生成


其三.输入页面:


<%@page pageEncoding="GBK" contentType="text/html; charset=GBK" %>
<%@ include file="/WEB-INF/jsp/include.jsp" %>
<html>
<head><title>添加新的联系人</title></head>
<body>
    <h1>添加联系人</h1>
    <form method="post">
     <table width="95%" bgcolor="f8f8ff" border="0" cellspacing="0" cellpadding="5">
     <tr>
     <td alignment="right" width="20%">姓名:</td>
     <spring:bind path="webContact.name">
     <td width="20%">
     <input type="text" name="name" value="${status.value}"/>">
     </td>
     <td width="60%">
     <font color="red"><c:out value="${status.errorMessage}"/></font>
     </td>
     </spring:bind>
     </tr>
     <tr>
     <td alignment="right" width="20%">电子邮件:</td>
     <spring:bind path="webContact.email">
     <td width="20%">
     <input type="text" name="email" value="${status.value}"/>">
     </td>
     <td width="60%">
     <font color="red"><c:out value="${status.errorMessage}"/></font>
     </td>
     </spring:bind>
     </tr>
     <tr>
     <td alignment="right" width="20%">请将图片中显示的内容填充到输入框中:</td>
     <spring:bind path="webContact.captchaResponse">
     <td width="20%">
     <img src="../captchaImage.htm" />
     <input type="text" name="captchaResponse" value="${status.value}"/>">
     </td>
     <td width="60%">
     <font color="red"><c:out value="${status.errorMessage}"/></font>
     </td>
     </spring:bind>
     </tr>
     </table>
     <br>
     <spring:hasBindErrors name="webContact">
     <b>请先修复所有的错误!>
     </spring:hasBindErrors>
     <br><br>
     <input name="execute" type="submit" alignment="center" value="新增">
    </form>
    <a href="../hello.htm"/>">回到主页</a>
</body>
</html>

其四:修改add.jsp对应的WebContactAddController SimpleFormController



package sample.contact;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
import org.springframework.web.servlet.view.RedirectView;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;


/**
 * Controller for adding a new contact.
 *
 * @author Ben Alex
 * @version $Id: WebContactAddController.java 1496 2006-05-23 13:38:33Z benalex $
 */

public class WebContactAddController extends SimpleFormController {
    //~ Instance fields ================================================================================================


    private ContactManager contactManager;

    //~ Methods ========================================================================================================


    protected Object formBackingObject(HttpServletRequest request)
        throws ServletException {
        WebContact wc = new WebContact();

        wc.setSessionId(request.getSession(false).getId());
        
        return wc;
    }

    public ContactManager getContactManager() {
        return contactManager;
    }

    public ModelAndView onSubmit(Object command) throws ServletException {
        String name = ((WebContact) command).getName();
        String email = ((WebContact) command).getEmail();
        
        Contact contact = new Contact(name, email);
        contactManager.create(contact);

        return new ModelAndView(new RedirectView(getSuccessView()));
    }

    public void setContactManager(ContactManager contactManager) {
        this.contactManager = contactManager;
    }
    
}


其五;配置文件(acegi本身采用了WebContactValidator校验器完成add.jsp中表单数据的校验)


<bean id="addValidator" class="sample.contact.WebContactValidatorVersion2">
        <property name="captchaService" ref="captchaService" />
    </bean>
  <bean id="secureAddForm" class="sample.contact.WebContactAddController">
        ...

      <property name="validator"><ref bean="addValidator"/></property>
  </bean>

<bean id="captchaServcie" class="sample.JCaptchaServiceProxy">
        <property name="service" ref="imageCaptchaService" />
    </bean>

那么WebContactValidate2的定义如下:


package sample.contact;

import org.acegisecurity.captcha.CaptchaServiceProxy;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;


/**
 * Validates {@link WebContact}.
 *
 * @author Ben Alex
 * @version $Id: WebContactValidator.java 1740 2006-11-14 02:30:00 +0000 (星期二, 14 十一月 2006) benalex $
 */

public class WebContactValidatorVersion2 implements Validator {
    
    private CaptchaServiceProxy captchaService;
    
    public boolean supports(Class clazz) {
        return clazz.equals(WebContact.class);
    }

    public void validate(Object obj, Errors errors) {
        WebContact wc = (WebContact) obj;

        if ((wc.getName() == null) || (wc.getName().length() < 3)
                    || (wc.getName().length() > 50)) {
            errors.rejectValue("name", "err.name", "Name 3-50 characters is required. *");
        }

        if ((wc.getEmail() == null) || (wc.getEmail().length() < 3)
                    || (wc.getEmail().length() > 50)) {
            errors.rejectValue("email", "err.email", "Email 3-50 characters is required. *");
        }
        
        if(wc.getCaptchaResponse() == null ||
                "".equals(wc.getCaptchaResponse().trim())){
            errors.rejectValue("captchaResponse", "err.captchaResponse",
                    "请重新完成Captcha Test!");
        } else {
            //实施Captcha Test

            if(!this.captchaService.validateReponseForId(wc.getSessionId(),
                        wc.getCaptchaResponse().trim())){
                errors.rejectValue("captchaResponse", "err.captchaResponse",
                        "请重新完成Captcha Test!");
            }
        }
    }
    
    public CaptchaServiceProxy getCaptchaService() {
        return captchaService;
    }
    
    public void setCaptchaService(CaptchaServiceProxy captchaService) {
        this.captchaService = captchaService;
    }
    
}

其六:CaptchaServiceProxy的定义如下:


package sample;

import org.acegisecurity.captcha.CaptchaServiceProxy;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.octo.captcha.service.CaptchaService;
import com.octo.captcha.service.CaptchaServiceException;

/**
 *
 * @author worldheart
 *
 */

public class JCaptchaServiceProxy implements CaptchaServiceProxy {
    
    protected static final Log log = LogFactory.getLog(JCaptchaServiceProxy.class);

    //将JCaptcha提供的CaptchaService集成进来

    private CaptchaService service;

    /**
     * 实施Captcha Test
     */

    public boolean validateReponseForId(String id, Object response) {
        if (id == null || response == null || "".equals(id)) {
            return false;
        } else {
            try {
                boolean result = service.validateResponseForID(id, response).booleanValue();
                if(result){
                    log.info(id + "(会话ID), " + response + "(captchaResponose)成功通过Captcha Test测试!");
                } else{
                    log.info(id + "(会话ID), " + response + "(captchaResponose)未能通过Captcha Test测试!");
                }
                return result;
            } catch (CaptchaServiceException e) {
                return false;
            }
        }
    }

    public void setService(CaptchaService service) {
        this.service = service;
    }

    public CaptchaService getService() {
        return service;
    }

}



JCaptcha与Acegi集成:

首先给出test页面:


<%@page pageEncoding="GBK" contentType="text/html; charset=GBK" %>
<%@ include file="/WEB-INF/jsp/include.jsp" %>
<html>
    <head>
        <title>实施基于JCaptcha的Captcha Test测试</title>
    </head>
    <body>
        <h1>Captcha Test测试</h1>
        <form action="" method="post">
             <table width="95%" bgcolor="f8f8ff" border="0"
                 cellspacing="0" cellpadding="5">
             <tr>
             <td alignment="right" width="30%">
                 请将图片中显示的内容填充到输入框中:
             </td>
             <td width="70%">
             <img src="captchaImage.htm"/><br><br>
             <input type="text" name="j_captcha_response" value="">
             </td>
             </tr>
             </table>
             <br>
             <input type="submit" value="提交" />
        </form>
        <a href=".htm"/>">主页</a>
    </body>
</html>

其次:为了能够单独测试上述Captcha,还需要提供SimpleFormController


package sample;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;

/**
 *
 * @author worldheart
 *
 */

public class CaptchaFormController extends SimpleFormController {

    protected ModelAndView onSubmit(HttpServletRequest request,
            HttpServletResponse response, Object command, BindException errors)
            throws Exception {
        
        //实施Captcha Test前的HTTP请求对应的URL

        String originalRequestUrl = request.getParameter("original_requestUrl");
        
        //在实际企业应用中,开发者还可能需要从HttpServletRequest中

        //抽取出CaptchaEntryPoint已经存放的各种参数,

        //比如original_request_method、original_request_parameters、等等。

        //最终,依据这些参数还原出在实施Captcha Test前的用户请求。

        //在某种程度上,CaptchaEntryPoint扮演了SavedRequest的角色。

        
        String redirectUrl = originalRequestUrl;
        
        //为了能够单独进行Captcha Test测试,特别提供了这一URL

        if(redirectUrl == null)
            redirectUrl = "";

        return new ModelAndView("redirect:" + redirectUrl);
    }

    protected Object formBackingObject(HttpServletRequest request)
            throws Exception {
        return new Object();
    }
    
}

下面是他们的配置:


<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                ...
                <prop key="/captcha.htm">captchaFormController</prop>
            </props>
        </property>
    </bean>
<bean id="captchaFormController"
     class="sample.CaptchaFormController" >
     <property name="formView" value="captcha"/>
     <property name="sessionForm" value="false"/>
    </bean>

下面Acegi提供的Captcha集成真正要介入进来:

其一:FilterChainProxy的定义:

    

<bean id="filterChainProxy" class="org.acegisecurity.util.FilterChainProxy">
      <property name="filterInvocationDefinitionSource">
         <value>
         CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
         PATTERN_TYPE_APACHE_ANT
            /**=httpSessionContextIntegrationFilter,captchaValidationProcessingFilter,channelProcessingFilter,logoutFilter,authenticationProcessingFilter,anonymousProcessingFilter,exceptionTranslationFilter,filterInvocationInterceptor
         </value>
      </property>
    </bean>

其二:HttpSessionContextIntegrationFilter的定义:


<bean id="httpSessionContextIntegrationFilter"
           class="org.acegisecurity.context.HttpSessionContextIntegrationFilter">
           <property name="context" value="org.acegisecurity.captcha.CaptchaSecurityContextImpl" />
   </bean>


其三:captchaValidationProcessingFilter过滤器的定义:


<bean id="captchaValidationProcessingFilter"
        class="org.acegisecurity.captcha.CaptchaValidationProcessingFilter">
        <property name="captchaService" ref="captchaService" />
        <property name="captchaValidationParameter" value="j_captcha_response" />
    </bean>
    
    <bean id="captchaService" class="sample.JCaptchaServiceProxy">
        <property name="service" ref="imageCaptchaService" />
    </bean>

其四:ChannelProcessingFilter的定义:


<bean id="channelProcessingFilter" class="org.acegisecurity.securechannel.ChannelProcessingFilter">
      <property name="channelDecisionManager" ref="channelDecisionManager" />
      <property name="filterInvocationDefinitionSource">
         <value>
                CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
             PATTERN_TYPE_APACHE_ANT
                /secure/debug.jsp=REQUIRES_CAPTCHA_ONCE_ABOVE_THRESOLD_REQUESTS
         </value>
      </property>
   </bean>

           class="org.acegisecurity.captcha.TestOnceAfterMaxRequestsCaptchaChannelProcessor">
           
           
           
  

   
  
           
           
  


另一个版本的完整实例:





   

   
     
        
            CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
            PATTERN_TYPE_APACHE_ANT
            /**=httpSessionContextIntegrationFilter,captchaValidationProcessingFilter,channelProcessingFilter,logoutFilter,authenticationProcessingFilter,anonymousProcessingFilter,exceptionTranslationFilter,filterInvocationInterceptor
        
     
   

  
           class="org.acegisecurity.providers.ProviderManager">
         
                
                       
                       
                
         
  


  
     
  

  

  
     
     
     
  

  
           class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"/>
   
  
           class="org.springframework.cache.ehcache.EhCacheFactoryBean">
     
     
  

  
  
     
  


  

  
      foobar
      anonymousUser,ROLE_ANONYMOUS
  

  
      foobar
  

  
           class="org.acegisecurity.context.HttpSessionContextIntegrationFilter">
          
  


  
     
     
        
             
        
     
  
  
  
     
     
         
             
         
     
  

  
     
      /acegilogin.jsp?login_error=1
      /
      /j_acegi_security_check
  

  
      /acegilogin.jsp
  

  
      false
     
        
           
        
     
  

  
     
     
     
        
                CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
                PATTERN_TYPE_APACHE_ANT
                /captcha.htm=ROLE_ANONYMOUS,ROLE_USER
                /captchaimage.htm=ROLE_ANONYMOUS,ROLE_USER
                /jcaptcha.jsp=ROLE_ANONYMOUS,ROLE_USER
                /jcaptcha=ROLE_ANONYMOUS,ROLE_USER
                /index.jsp=ROLE_ANONYMOUS,ROLE_USER
                /hello.htm=ROLE_ANONYMOUS,ROLE_USER
                /logoff.jsp=ROLE_ANONYMOUS,ROLE_USER
                /acegilogin.jsp*=ROLE_ANONYMOUS,ROLE_USER
                /**=ROLE_USER
        
     
  

  
     
     
        
                CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
                PATTERN_TYPE_APACHE_ANT
                /secure/debug.jsp=REQUIRES_CAPTCHA_BELOW_AVERAGE_TIME_IN_MILLIS_REQUESTS
        
     
  

  
           class="org.acegisecurity.securechannel.ChannelDecisionManagerImpl">
     
        
           
           
           
           
        
     
  


  
           class="org.acegisecurity.captcha.TestOnceAfterMaxRequestsCaptchaChannelProcessor">
          
          
          
               value="REQUIRES_CAPTCHA_ONCE_ABOVE_THRESOLD_REQUESTS" />
  

  
  
           class="org.acegisecurity.captcha.AlwaysTestAfterTimeInMillisCaptchaChannelProcessor">
          
          
          
               value="REQUIRES_CAPTCHA_AFTER_THRESOLD_IN_MILLIS" />
  


  
           class="org.acegisecurity.captcha.AlwaysTestAfterMaxRequestsCaptchaChannelProcessor">
          
          
          
               value="REQUIRES_CAPTCHA_ABOVE_THRESOLD_REQUESTS" />
  


  
           class="org.acegisecurity.captcha.AlwaysTestBelowAverageTimeInMillisBetweenRequestsChannelProcessor">
          
          
          
               value="REQUIRES_CAPTCHA_BELOW_AVERAGE_TIME_IN_MILLIS_REQUESTS" />
  

  
  
          
          
  
  
   
        class="org.acegisecurity.captcha.CaptchaValidationProcessingFilter">
       
       
   

   
   
       
   
     

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