1、拦截器是基于java的反射机制的，而过滤器是基于函数回调

2、过滤器依赖与servlet容器，而拦截器不依赖与servlet容器

3、拦截器只能对action请求起作用，而过滤器则可以对几乎所有的请求起作用

4、拦截器可以访问action上下文、值栈里的对象，而过滤器不能

5、在action的生命周期中，拦截器可以多次被调用，而过滤器只能在容器初始化时被调用一次

-1, the interceptor is based on java reflection mechanism, while the filter is based on function callbacks

2, the filter depends servlet container interceptor does not depend on the servlet container

3, the interceptor can only action requests work, the filter can work on almost all requests

4, the interceptor can access the action context, object value stack, and the filter can not

5, the life cycle of the action, the interceptor can many times be called, and the filter can only be called once in the container initialization