import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import org.springframework.web.servlet.HandlerInterceptor; 
import org.springframework.web.servlet.ModelAndView; 
 
public class TestInterceptor implements HandlerInterceptor { 
 
  /** 
   * 返回值說明是否需要將當(dāng)前的請(qǐng)求攔截下來 
   * false：請(qǐng)求將被終止 
   * true：請(qǐng)求會(huì)被繼續(xù)運(yùn)行 
   * Object handler 表示的是被攔截的請(qǐng)求的目標(biāo)對(duì)象 
   */ 
  @Override 
  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) 
      throws Exception { 
    System.out.println("TestInterceptor.preHandle()"); 
    return true; 
  } 
  /** 
   * modelAndView： 
   *   可以通過modelAndView參數(shù)改變顯示的視圖，或者修改發(fā)往視圖的方法 
   */ 
  @Override 
  public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, 
      ModelAndView modelAndView) throws Exception { 
    System.out.println("TestInterceptor.postHandle()"); 
     
  } 
  /** 
   * 在視圖加載完畢之后調(diào)用 
   * 常用于作于資源的銷毀，流等 
   * 類似于析構(gòu)函數(shù) 
   */ 
  @Override 
  public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) 
      throws Exception { 
    System.out.println("TestInterceptor.afterCompletion()");   
  } 
} 

<!-- 注冊(cè)攔截器 --> 
 <mvc:interceptors> 
  <!-- 單個(gè)攔截器:設(shè)置具體的攔截路徑 --> 
  <mvc:interceptor> 
    <mvc:mapping path="/courses/view2/*"/> 
    <bean class="com.cc.mvcdemo.interceptor.TestInterceptor"></bean> 
  </mvc:interceptor> 
   
  <!-- 第二種方式：攔截經(jīng)過當(dāng)前Dispatcherservlet的所有請(qǐng)求 --> 
  <bean class="com.cc.mvcdemo.interceptor.TestInterceptorTwo"></bean> 
   
 </mvc:interceptors>