【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”）

  1.  package com.jspxcms.core.support;
  2.  
  3.  /**
  4.   * CmsException CMS异常
  5.   *
  6.   * @author liufang
  7.   *
  8.   */
  9.  public class CmsException extends RuntimeException {
  10.      private static final long serialVersionUID = 1L;
  11.      private String[] args;
  12.  
  13.      public CmsException() {
  14.          super();
  15.      }
  16.  
  17.      public CmsException(String s) {
  18.          super(s);
  19.      }
  20.  
  21.      public CmsException(String s, String... args) {
  22.          super(s);
  23.          this.args = args;
  24.      }
  25.  
  26.      public CmsException(String message, Throwable cause) {
  27.          super(message, cause);
  28.      }
  29.  
  30.      public CmsException(Throwable cause) {
  31.          super(cause);
  32.      }
  33.  
  34.      public String[] getArgs() {
  35.          return args;
  36.      }
  37.  
  38.      public void setArgs(String[] args) {
  39.          this.args = args;
  40.      }
  41.  
  42.  }

【2】web.xml中定义异常提示页面

  1.  <?xml version="1.0" encoding="UTF-8"?>
  2.  <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">
  3.      <display-name>jspxcms</display-name>
  4.      <context-param>
  5.          <param-name>contextConfigLocation</param-name>
  6.          <param-value>
  7.              /WEB-INF/conf/context-*.xml
  8.              /WEB-INF/conf/custom-component.xml
  9.              /WEB-INF/conf/core/core-context-dao.xml
  10.              /WEB-INF/conf/core/core-context-service.xml
  11.              /WEB-INF/conf/core/core-context-directive.xml
  12.              /WEB-INF/conf/ext/ext-context-dao.xml
  13.              /WEB-INF/conf/ext/ext-context-service.xml
  14.              /WEB-INF/conf/ext/ext-context-directive.xml
  15.              /WEB-INF/conf/plugin/**/context-*.xml
  16.          </param-value>
  17.      </context-param>
  18.    <!--
  19.    <filter>
  20.      <filter-name>urlRewriteFilter</filter-name>
  21.      <filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
  22.      <init-param>
  23.        <param-name>statusEnabled</param-name>
  24.        <param-value>false</param-value>
  25.      </init-param>
  26.      <init-param>
  27.        <param-name>statusPath</param-name>
  28.        <param-value>/status.jspx</param-value>
  29.      </init-param>
  30.    </filter>
  31.     -->
  32.      <filter>
  33.          <filter-name>timerFilter</filter-name>
  34.          <filter-class>com.jspxcms.common.web.TimerFilter</filter-class>
  35.      </filter>
  36.      <filter>
  37.          <filter-name>encodingFilter</filter-name>
  38.          <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  39.          <init-param>
  40.              <param-name>encoding</param-name>
  41.              <param-value>UTF-8</param-value>
  42.          </init-param>
  43.          <init-param>
  44.              <param-name>forceEncoding</param-name>
  45.              <param-value>true</param-value>
  46.          </init-param>
  47.      </filter>
  48.      <filter>
  49.          <filter-name>openEntityManagerInViewFilter</filter-name>
  50.          <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
  51.      </filter>
  52.      <filter>
  53.          <filter-name>shiroFilter</filter-name>
  54.          <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
  55.          <init-param>
  56.              <param-name>targetFilterLifecycle</param-name>
  57.              <param-value>true</param-value>
  58.          </init-param>
  59.      </filter>
  60.      <filter>
  61.          <filter-name>jspDispatcherFilter</filter-name>
  62.          <filter-class>com.jspxcms.common.web.JspDispatcherFilter</filter-class>
  63.          <init-param>
  64.              <param-name>prefix</param-name>
  65.              <param-value>/jsp</param-value>
  66.          </init-param>
  67.      </filter>
  68.  
  69.    <!--
  70.    <filter-mapping>
  71.      <filter-name>urlRewriteFilter</filter-name>
  72.      <url-pattern>/*</url-pattern>
  73.      <dispatcher>REQUEST</dispatcher>
  74.    </filter-mapping>
  75.       -->
  76.      <filter-mapping>
  77.          <filter-name>timerFilter</filter-name>
  78.          <url-pattern>*.servlet</url-pattern>
  79.      </filter-mapping>
  80.      <filter-mapping>
  81.          <filter-name>timerFilter</filter-name>
  82.          <url-pattern>/cmscp/*</url-pattern>
  83.      </filter-mapping>
  84.      <filter-mapping>
  85.          <filter-name>encodingFilter</filter-name>
  86.          <url-pattern>/cmscp/*</url-pattern>
  87.      </filter-mapping>
  88.      <filter-mapping>
  89.          <filter-name>openEntityManagerInViewFilter</filter-name>
  90.          <url-pattern>/cmscp/*</url-pattern>
  91.      </filter-mapping>
  92.      <filter-mapping>
  93.          <filter-name>shiroFilter</filter-name>
  94.          <url-pattern>/cmscp/*</url-pattern>
  95.      </filter-mapping>
  96.      <filter-mapping>
  97.          <filter-name>timerFilter</filter-name>
  98.          <url-pattern>*.jspx</url-pattern>
  99.      </filter-mapping>
  100.      <filter-mapping>
  101.          <filter-name>encodingFilter</filter-name>
  102.          <url-pattern>*.jspx</url-pattern>
  103.      </filter-mapping>
  104.      <filter-mapping>
  105.          <filter-name>openEntityManagerInViewFilter</filter-name>
  106.          <url-pattern>*.jspx</url-pattern>
  107.      </filter-mapping>
  108.      <filter-mapping>
  109.          <filter-name>shiroFilter</filter-name>
  110.          <url-pattern>*.jspx</url-pattern>
  111.      </filter-mapping>
  112.  
  113.       <filter-mapping>
  114.          <filter-name>shiroFilter</filter-name>
  115.          <url-pattern>/</url-pattern>
  116.      </filter-mapping>
  117.      <filter-mapping>
  118.          <filter-name>timerFilter</filter-name>
  119.          <url-pattern>/</url-pattern>
  120.      </filter-mapping>
  121.      <filter-mapping>
  122.          <filter-name>encodingFilter</filter-name>
  123.          <url-pattern>/</url-pattern>
  124.      </filter-mapping>
  125.      <filter-mapping>
  126.          <filter-name>openEntityManagerInViewFilter</filter-name>
  127.          <url-pattern>/</url-pattern>
  128.      </filter-mapping>
  129.  
  130.      <filter-mapping>
  131.          <filter-name>timerFilter</filter-name>
  132.          <url-pattern>*.jsp</url-pattern>
  133.      </filter-mapping>
  134.      <filter-mapping>
  135.          <filter-name>encodingFilter</filter-name>
  136.          <url-pattern>*.jsp</url-pattern>
  137.      </filter-mapping>
  138.      <filter-mapping>
  139.          <filter-name>openEntityManagerInViewFilter</filter-name>
  140.          <url-pattern>*.jsp</url-pattern>
  141.      </filter-mapping>
  142.      <filter-mapping>
  143.          <filter-name>jspDispatcherFilter</filter-name>
  144.          <url-pattern>*.jsp</url-pattern>
  145.      </filter-mapping>
  146.  
  147.      <listener>
  148.          <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  149.      </listener>
  150.      <listener>
  151.          <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
  152.      </listener>
  153.      <listener>
  154.         <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  155.      </listener>
  156.      <servlet>
  157.          <servlet-name>background</servlet-name>
  158.          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  159.          <init-param>
  160.              <param-name>contextConfigLocation</param-name>
  161.              <param-value>
  162.                  /WEB-INF/conf/servlet-back.xml
  163.                  /WEB-INF/conf/core/core-controller-back.xml
  164.                  /WEB-INF/conf/ext/ext-controller-back.xml
  165.                  /WEB-INF/conf/plugin/**/controller-back.xml
  166.              </param-value>
  167.          </init-param>
  168.          <load-on-startup>1</load-on-startup>
  169.      </servlet>
  170.      <servlet>
  171.          <servlet-name>foreground</servlet-name>
  172.          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  173.          <init-param>
  174.              <param-name>contextConfigLocation</param-name>
  175.              <param-value>
  176.                  /WEB-INF/conf/servlet-fore.xml
  177.                  /WEB-INF/conf/core/core-controller-fore.xml
  178.                  /WEB-INF/conf/ext/ext-controller-fore.xml
  179.                  /WEB-INF/conf/plugin/**/controller-fore.xml
  180.              </param-value>
  181.          </init-param>
  182.          <load-on-startup>1</load-on-startup>
  183.      </servlet>
  184.      <servlet>
  185.          <servlet-name>keepSessionServlet</servlet-name>
  186.          <servlet-class>com.jspxcms.common.web.KeepSessionServlet</servlet-class>
  187.      </servlet>
  188.      <servlet>
  189.          <servlet-name>captchaServlet</servlet-name>
  190.          <servlet-class>com.jspxcms.common.captcha.CaptchaServlet</servlet-class>
  191.      </servlet>
  192.  
  193.    <servlet-mapping>
  194.          <servlet-name>background</servlet-name>
  195.          <url-pattern>/cmscp/*</url-pattern>
  196.      </servlet-mapping>
  197.      <servlet-mapping>
  198.          <servlet-name>foreground</servlet-name>
  199.          <url-pattern>*.jspx</url-pattern>
  200.      </servlet-mapping>
  201.      <servlet-mapping>
  202.          <servlet-name>keepSessionServlet</servlet-name>
  203.          <url-pattern>/keep_session.servlet</url-pattern>
  204.      </servlet-mapping>
  205.      <servlet-mapping>
  206.          <servlet-name>captchaServlet</servlet-name>
  207.          <url-pattern>/captcha.servlet</url-pattern>
  208.      </servlet-mapping>
  209.  
  210.      <session-config>
  211.          <session-timeout>20</session-timeout>
  212.      </session-config>
  213.  
  214.      <error-page>
  215.          <error-code>400</error-code>
  216.          <location>/errors/400.jsp</location>
  217.      </error-page>
  218.      <error-page>
  219.          <error-code>403</error-code>
  220.          <location>/errors/403.jsp</location>
  221.      </error-page>
  222.      <error-page>
  223.          <error-code>404</error-code>
  224.          <location>/errors/404.jsp</location>
  225.      </error-page>
  226.      <error-page>
  227.          <error-code>500</error-code>
  228.          <location>/errors/500.jsp</location>
  229.      </error-page>
  230.      <error-page>
  231.          <exception-type>javax.validation.ConstraintViolationException</exception-type>
  232.          <location>/errors/400.jsp</location>
  233.      </error-page>
  234.      <!-- shiro中没有权限是抛出异常 -->
  235.      <error-page>
  236.          <exception-type>org.apache.shiro.authz.AuthorizationException</exception-type>
  237.          <location>/errors/403.jsp</location>
  238.      </error-page>
  239.      <error-page>
  240.          <exception-type>org.springframework.dao.DataIntegrityViolationException</exception-type>
  241.          <location>/errors/data_integrity_violation_exception.jsp</location>
  242.      </error-page>
  243.      <error-page>
  244.          <exception-type>com.jspxcms.core.support.DeleteException</exception-type>
  245.          <location>/errors/delete_exception.jsp</location>
  246.      </error-page>
  247.      <error-page>
  248.          <exception-type>com.jspxcms.core.support.CmsException</exception-type>
  249.          <location>/errors/cms_exception.jsp</location>
  250.      </error-page>
  251.  
  252.      <welcome-file-list>
  253.          <welcome-file>index.html</welcome-file>
  254.          <welcome-file>index.htm</welcome-file>
  255.          <welcome-file>index.shtml</welcome-file>
  256.          <welcome-file>index.shtm</welcome-file>
  257.          <welcome-file>index.jspx</welcome-file>
  258.      </welcome-file-list>
  259.  </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”);

  1.  package com.jspxcms.ext.interceptor;
  2.  
  3.  import java.lang.reflect.Method;
  4.  import java.util.UUID;
  5.  
  6.  import javax.servlet.http.HttpServletRequest;
  7.  import javax.servlet.http.HttpServletResponse;
  8.  
  9.  import org.apache.log4j.Logger;
  10.  import org.springframework.web.method.HandlerMethod;
  11.  import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
  12.  
  13.  import com.jspxcms.core.support.CmsException;
  14.  
  15.  public class TokenInterceptor extends HandlerInterceptorAdapter {
  16.      private static final Logger LOG = Logger.getLogger(TokenInterceptor.class);
  17.  
  18.      @Override
  19.      public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
  20.          if (handler instanceof HandlerMethod) {
  21.              HandlerMethod handlerMethod = (HandlerMethod) handler;
  22.              Method method = handlerMethod.getMethod();
  23.              Token  annotation = method.getAnnotation(Token.class);
  24.              if (annotation != null) {
  25.                  boolean needSaveSession = annotation.save();
  26.                  if (needSaveSession) {
  27.                      request.getSession(true).setAttribute("token", UUID.randomUUID().toString());
  28.                  }
  29.                  boolean needRemoveSession = annotation.remove();
  30.                  if (needRemoveSession) {
  31.                      if (isRepeatSubmit(request)) {
  32.                           LOG.warn("please don't repeat submit,url:"+ request.getServletPath());
  33.                           throw new CmsException("请不要重复提交申请！");
  34.                         // return false;
  35.                      }
  36.                      request.getSession(true).removeAttribute("token");
  37.                  }
  38.              }
  39.              return true;
  40.          } else {
  41.              return super.preHandle(request, response, handler);
  42.          }
  43.      }
  44.  
  45.      private boolean isRepeatSubmit(HttpServletRequest request) {
  46.          String serverToken = (String) request.getSession(true).getAttribute("token");
  47.          if (serverToken == null) {
  48.              return true;
  49.          }
  50.          String clinetToken = request.getParameter("token");
  51.          if (clinetToken == null) {
  52.              return true;
  53.          }
  54.          if (!serverToken.equals(clinetToken)) {
  55.              return true;
  56.          }
  57.          return false;
  58.      }
  59.  }

【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

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】的更多相关文章

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