拦截器springmvc防止表单重复提交【3】3秒后自动跳回首页【重点明白如何跳转到各自需要的页面没有实现 但是有思路】

【1】定义异常类

【重点】：异常类有个多参数的构造函数public CmsException(String s, String... args)，可以用来接受多个参数：如（“异常信息”，“几秒跳转”，“跳转url”）

 package com.jspxcms.core.support;

 /**
  * CmsException CMS异常
  *
  * @author liufang
  *
  */
 public class CmsException extends RuntimeException {
     private static final long serialVersionUID = 1L;
     private String[] args;

     public CmsException() {
         super();
     }

     public CmsException(String s) {
         super(s);
     }

     public CmsException(String s, String... args) {
         super(s);
         this.args = args;
     }

     public CmsException(String message, Throwable cause) {
         super(message, cause);
     }

     public CmsException(Throwable cause) {
         super(cause);
     }

     public String[] getArgs() {
         return args;
     }

     public void setArgs(String[] args) {
         this.args = args;
     }

 }

【2】web.xml中定义异常提示页面

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
     <display-name>jspxcms</display-name>
     <context-param>
         <param-name>contextConfigLocation</param-name>
         <param-value>
             /WEB-INF/conf/context-*.xml
             /WEB-INF/conf/custom-component.xml
             /WEB-INF/conf/core/core-context-dao.xml
             /WEB-INF/conf/core/core-context-service.xml
             /WEB-INF/conf/core/core-context-directive.xml
             /WEB-INF/conf/ext/ext-context-dao.xml
             /WEB-INF/conf/ext/ext-context-service.xml
             /WEB-INF/conf/ext/ext-context-directive.xml
             /WEB-INF/conf/plugin/**/context-*.xml
         </param-value>
     </context-param>
   <!--
   <filter>
     <filter-name>urlRewriteFilter</filter-name>
     <filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
     <init-param>
       <param-name>statusEnabled</param-name>
       <param-value>false</param-value>
     </init-param>
     <init-param>
       <param-name>statusPath</param-name>
       <param-value>/status.jspx</param-value>
     </init-param>
   </filter>
    -->
     <filter>
         <filter-name>timerFilter</filter-name>
         <filter-class>com.jspxcms.common.web.TimerFilter</filter-class>
     </filter>
     <filter>
         <filter-name>encodingFilter</filter-name>
         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
         <init-param>
             <param-name>encoding</param-name>
             <param-value>UTF-8</param-value>
         </init-param>
         <init-param>
             <param-name>forceEncoding</param-name>
             <param-value>true</param-value>
         </init-param>
     </filter>
     <filter>
         <filter-name>openEntityManagerInViewFilter</filter-name>
         <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
     </filter>
     <filter>
         <filter-name>shiroFilter</filter-name>
         <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
         <init-param>
             <param-name>targetFilterLifecycle</param-name>
             <param-value>true</param-value>
         </init-param>
     </filter>
     <filter>
         <filter-name>jspDispatcherFilter</filter-name>
         <filter-class>com.jspxcms.common.web.JspDispatcherFilter</filter-class>
         <init-param>
             <param-name>prefix</param-name>
             <param-value>/jsp</param-value>
         </init-param>
     </filter>

   <!--
   <filter-mapping>
     <filter-name>urlRewriteFilter</filter-name>
     <url-pattern>/*</url-pattern>
     <dispatcher>REQUEST</dispatcher>
   </filter-mapping>
      -->
     <filter-mapping>
         <filter-name>timerFilter</filter-name>
         <url-pattern>*.servlet</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>timerFilter</filter-name>
         <url-pattern>/cmscp/*</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>encodingFilter</filter-name>
         <url-pattern>/cmscp/*</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>openEntityManagerInViewFilter</filter-name>
         <url-pattern>/cmscp/*</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>shiroFilter</filter-name>
         <url-pattern>/cmscp/*</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>timerFilter</filter-name>
         <url-pattern>*.jspx</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>encodingFilter</filter-name>
         <url-pattern>*.jspx</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>openEntityManagerInViewFilter</filter-name>
         <url-pattern>*.jspx</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>shiroFilter</filter-name>
         <url-pattern>*.jspx</url-pattern>
     </filter-mapping>

      <filter-mapping>
         <filter-name>shiroFilter</filter-name>
         <url-pattern>/</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>timerFilter</filter-name>
         <url-pattern>/</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>encodingFilter</filter-name>
         <url-pattern>/</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>openEntityManagerInViewFilter</filter-name>
         <url-pattern>/</url-pattern>
     </filter-mapping>

     <filter-mapping>
         <filter-name>timerFilter</filter-name>
         <url-pattern>*.jsp</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>encodingFilter</filter-name>
         <url-pattern>*.jsp</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>openEntityManagerInViewFilter</filter-name>
         <url-pattern>*.jsp</url-pattern>
     </filter-mapping>
     <filter-mapping>
         <filter-name>jspDispatcherFilter</filter-name>
         <url-pattern>*.jsp</url-pattern>
     </filter-mapping>

     <listener>
         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
     </listener>
     <listener>
         <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
     </listener>
     <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
     </listener>
     <servlet>
         <servlet-name>background</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <init-param>
             <param-name>contextConfigLocation</param-name>
             <param-value>
                 /WEB-INF/conf/servlet-back.xml
                 /WEB-INF/conf/core/core-controller-back.xml
                 /WEB-INF/conf/ext/ext-controller-back.xml
                 /WEB-INF/conf/plugin/**/controller-back.xml
             </param-value>
         </init-param>
         <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet>
         <servlet-name>foreground</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <init-param>
             <param-name>contextConfigLocation</param-name>
             <param-value>
                 /WEB-INF/conf/servlet-fore.xml
                 /WEB-INF/conf/core/core-controller-fore.xml
                 /WEB-INF/conf/ext/ext-controller-fore.xml
                 /WEB-INF/conf/plugin/**/controller-fore.xml
             </param-value>
         </init-param>
         <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet>
         <servlet-name>keepSessionServlet</servlet-name>
         <servlet-class>com.jspxcms.common.web.KeepSessionServlet</servlet-class>
     </servlet>
     <servlet>
         <servlet-name>captchaServlet</servlet-name>
         <servlet-class>com.jspxcms.common.captcha.CaptchaServlet</servlet-class>
     </servlet>

   <servlet-mapping>
         <servlet-name>background</servlet-name>
         <url-pattern>/cmscp/*</url-pattern>
     </servlet-mapping>
     <servlet-mapping>
         <servlet-name>foreground</servlet-name>
         <url-pattern>*.jspx</url-pattern>
     </servlet-mapping>
     <servlet-mapping>
         <servlet-name>keepSessionServlet</servlet-name>
         <url-pattern>/keep_session.servlet</url-pattern>
     </servlet-mapping>
     <servlet-mapping>
         <servlet-name>captchaServlet</servlet-name>
         <url-pattern>/captcha.servlet</url-pattern>
     </servlet-mapping>

     <session-config>
         <session-timeout>20</session-timeout>
     </session-config>

     <error-page>
         <error-code>400</error-code>
         <location>/errors/400.jsp</location>
     </error-page>
     <error-page>
         <error-code>403</error-code>
         <location>/errors/403.jsp</location>
     </error-page>
     <error-page>
         <error-code>404</error-code>
         <location>/errors/404.jsp</location>
     </error-page>
     <error-page>
         <error-code>500</error-code>
         <location>/errors/500.jsp</location>
     </error-page>
     <error-page>
         <exception-type>javax.validation.ConstraintViolationException</exception-type>
         <location>/errors/400.jsp</location>
     </error-page>
     <!-- shiro中没有权限是抛出异常 -->
     <error-page>
         <exception-type>org.apache.shiro.authz.AuthorizationException</exception-type>
         <location>/errors/403.jsp</location>
     </error-page>
     <error-page>
         <exception-type>org.springframework.dao.DataIntegrityViolationException</exception-type>
         <location>/errors/data_integrity_violation_exception.jsp</location>
     </error-page>
     <error-page>
         <exception-type>com.jspxcms.core.support.DeleteException</exception-type>
         <location>/errors/delete_exception.jsp</location>
     </error-page>
     <error-page>
         <exception-type>com.jspxcms.core.support.CmsException</exception-type>
         <location>/errors/cms_exception.jsp</location>
     </error-page>

     <welcome-file-list>
         <welcome-file>index.html</welcome-file>
         <welcome-file>index.htm</welcome-file>
         <welcome-file>index.shtml</welcome-file>
         <welcome-file>index.shtm</welcome-file>
         <welcome-file>index.jspx</welcome-file>
     </welcome-file-list>
 </web-app>

【3】产生异常的地方 此处为拦截器

【重点】相应的new CmsException("请不要重复提交申请！"，“3”，“要分别跳转的url地址”);

 package com.jspxcms.ext.interceptor;

 import java.lang.reflect.Method;
 import java.util.UUID;

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

 import org.apache.log4j.Logger;
 import org.springframework.web.method.HandlerMethod;
 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

 import com.jspxcms.core.support.CmsException;

 public class TokenInterceptor extends HandlerInterceptorAdapter {
     private static final Logger LOG = Logger.getLogger(TokenInterceptor.class);

     @Override
     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
         if (handler instanceof HandlerMethod) {
             HandlerMethod handlerMethod = (HandlerMethod) handler;
             Method method = handlerMethod.getMethod();
             Token  annotation = method.getAnnotation(Token.class);
             if (annotation != null) {
                 boolean needSaveSession = annotation.save();
                 if (needSaveSession) {
                     request.getSession(true).setAttribute("token", UUID.randomUUID().toString());
                 }
                 boolean needRemoveSession = annotation.remove();
                 if (needRemoveSession) {
                     if (isRepeatSubmit(request)) {
                          LOG.warn("please don't repeat submit,url:"+ request.getServletPath());
                          throw new CmsException("请不要重复提交申请！");
                        // return false;
                     }
                     request.getSession(true).removeAttribute("token");
                 }
             }
             return true;
         } else {
             return super.preHandle(request, response, handler);
         }
     }

     private boolean isRepeatSubmit(HttpServletRequest request) {
         String serverToken = (String) request.getSession(true).getAttribute("token");
         if (serverToken == null) {
             return true;
         }
         String clinetToken = request.getParameter("token");
         if (clinetToken == null) {
             return true;
         }
         if (!serverToken.equals(clinetToken)) {
             return true;
         }
         return false;
     }
 }

【4】jsp页面

【5】页面效果

【后面补充】：测试的时候发现  href用的是/index.jspx   如果不行  根据时间情况改写