對於添加了springMVC攔截器後無法訪問靜態檔案的情況,有三種解決辦法，可參考：http://www.cnblogs.com/banning/p/6195072.html

我專案中用的第一種方案，且靜態檔案全在/WEB-INF/public/，故配置如下：

springmvc-config.xml配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xmlns:p="http://www.springframework.org/schema/p" 
  xmlns:context="http://www.springframework.org/schema/context" 
  xmlns:mvc="http://www.springframework.org/schema/mvc" 
  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd 
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd 
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
  
  <!-- 開啟springmvc註解 -->
  <mvc:annotation-driven />
  
  <!-- 自動掃描包 -->
  <context:component-scan base-package="com.chensan"/>
  
  <!-- springmvc不過濾的目錄和檔案 -->
  <mvc:resources mapping="/public/**" location="/WEB-INF/public/" />
  
  <!-- 配置檢視解析器：如何把Handler方法返回值解析為實際的物理檢視 -->
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/" />
    <property name="suffix" value=".jsp" />
  </bean>
  
  <!-- 攔截器 -->
  <mvc:interceptors>
    <!-- 多個攔截器，順序執行 -->
    <mvc:interceptor>
      <mvc:mapping path="/**"/>
      <!-- 需排除攔截的地址 -->
      <mvc:exclude-mapping path="/public/**"/>
      <bean class="com.chensan.interceptor.LoginInterceptor"></bean>
    </mvc:interceptor>
  </mvc:interceptors>
</beans>
 

session攔截器

package com.chensan.interceptor;

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

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

/**
 * 登入認證的攔截器
 */
public class LoginInterceptor implements HandlerInterceptor{  
    /**
     * Handler執行之前呼叫這個方法
     */
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, 
            Object handler) throws Exception {
        //獲取請求的URL
        String url = request.getRequestURI();
        System.out.println("訪問路徑："+ url);
        //URL:login.jsp是公開的;這個demo是除了login.jsp是可以公開訪問的，其它的URL都進行攔截控制
        if(url.indexOf("/signIn")>=0){
            return true;
        }
        
        System.out.println("攔截路徑："+ url);
        //獲取Session
        HttpSession session = request.getSession();
        String username = (String)session.getAttribute("loginname");
        
        if(username != null){
            return true;
        }
        //不符合條件的，跳轉到登入介面
        request.getRequestDispatcher("/WEB-INF/jsp/login.jsp").forward(request, response);
        return false;
    }
    
    /**
     * Handler執行之後，ModelAndView返回之前呼叫這個方法
     */
    public void postHandle(HttpServletRequest request, HttpServletResponse response, 
            Object handler, ModelAndView modelAndView) throws Exception {
    }
    
    /**
     * Handler執行完成之後呼叫這個方法
     */
    public void afterCompletion(HttpServletRequest request, 
            HttpServletResponse response, Object handler, Exception exc) throws Exception {
          
    }
}