springmvc+shiro自定义过滤器的实现代码

import org.slf4j.logger;

import org.slf4j.loggerfactory;

import org.springframework.web.servlet.handlerinterceptor;

import org.springframework.web.servlet.modelandview;

import javax.servlet.http.httpservletrequest;

import javax.servlet.http.httpservletresponse;

import javax.servlet.http.httpsession;

/**

  * 用户登录以后跳转回之前页面的拦截器 拦截对象： 除登录，注册之外的所有跳转页面的请求 因为用户随时可能进行登录操作

  *

  * @version 1.0.0

  * @date 2018 -10-19

  */

public class forwardbeforeurlinteceptor implements handlerinterceptor {

  private logger logger = loggerfactory.getlogger( this .getclass());

  @override

  public void aftercompletion(httpservletrequest arg0, httpservletresponse arg1, object arg2, exception arg3)

   throws exception {

  }

  @override

  public void posthandle(httpservletrequest arg0, httpservletresponse arg1, object arg2, modelandview arg3)

   throws exception {

  }

  @override

  public boolean prehandle(httpservletrequest request, httpservletresponse response, object arg2) throws exception {

  // 过滤掉ajax请求

  if (request.getheader( "x-requested-with" ) != null

   && request.getheader( "x-requested-with" ).equalsignorecase( "xmlhttprequest" )) {

   return true ;

  }

  // 获取当前会话

  httpsession session = request.getsession( true );

  // 拿到上一个页面地址

  string uri = request.getrequesturi();

  // 去掉项目地址长度的字符（因为我的默认项目地址是给出的）

  string path = uri.substring(request.getcontextpath().length());

  // 得到参数

  string query = request.getquerystring();

  if (query == null ) {

   query = "" ;

  } else {

   query = "?" + query;

  }

  string beforepath = path + query;

  session.setattribute( "beforepath" , beforepath);

  session.setattribute( "method" , request.getmethod());

  logger.debug( "beforepath :{}, method:{}" , beforepath, request.getmethod());

  return true ;

  }

}

<mvc:interceptors>

    <!-- 使用bean定义一个interceptor，直接定义在mvc:interceptors根下面的interceptor将拦截所有的请求 -->

    <!-- 配置用于跳回登录之前的页面的拦截器-->

    <mvc:interceptor>

      <!-- 进行拦截：/**表示拦截所有url及其子路径 -->

      <mvc:mapping path= "/**" />

      <!-- ajax请求的action不进行拦截 -->

      <mvc:exclude-mapping path= "/*.ajax" />

      <mvc:exclude-mapping path= "/resources/**" />

      <mvc:exclude-mapping path= "/activation" />

      <bean class = "com.xxx.xxx.xxx.interceptor.forwardbeforeurlinteceptor" />

    </mvc:interceptor>

  </mvc:interceptors>

import javax.servlet.servletrequest;

import javax.servlet.servletresponse;

import javax.servlet.http.httpservletrequest;

import javax.servlet.http.httpservletresponse;

import java.io.ioexception;

/**

  * 课程拦截器,当会员过期或未激活时自动跳转到激活页面

  *

  * @version 1.0.0

  * @date 2018 -10-19

  */

public class memberfilter extends com.bwjf.framework.shiro.filter.userfilter {

  @override

  protected boolean isaccessallowed(servletrequest request, servletresponse response, object mappedvalue) {

  httpservletresponse httpservletresponse = (httpservletresponse) response;

  httpservletrequest httpservletrequest = (httpservletrequest) request;

  if (httpservletrequest.getrequesturi().indexof( "activation" ) > 0 ) {

   return true ;

  }

  myshirouser myshirouser = myuserutil.getcurrentshirouser();

  if (!checkemptyutil.isempty(myshirouser) && checkemptyutil.isempty(myshirouser.getactivedate())) {

   try {

       // 浏览器跳转到激活页面

   httpservletresponse.sendredirect(httpservletrequest.getcontextpath() + "/activation" );

   } catch (ioexception e) {

   e.printstacktrace();

   }

  }

  return true ;

  }

}