SpringMVC设置一个自定义拦截器

1.创建一个MyInterceptor类，并实现HandlerInterceptor接口
public class MyInterceptor implements HandlerInterceptor { 

@Override 

public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception { System.out.println("afterCompletion"); 

} 

@Override 

public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
throws Exception { System.out.println("postHandle");

 } 

@Override 

public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception
{ System.out.println("preHandle"); return true;

 } 

}

2.在SpringMVC的配置文件中配置

<mvc:interceptors>

<mvc:interceptor>

<mvc:mapping path="/mvc/**" />

<bean class="aaa.bbb.interceptor"></bean>

</mvc:interceptor>

</mvc:interceptors>