过滤器:网络通信模型的会话层控制: 拦截器:事务处理的aop注入(生命周期监控). 对于Servlet Filter,官方文档中说的很好, 并且给出了常见的应用场景. A filter is an object that performs filtering tasks on either the request to a resource (a servlet or static content), or on the response from a resource, or both. Fi…