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Base class for all Filters that require the current user to be authenticated. This class encapsulates the logic of checking whether a user is already authenticated in the system while subclasses are required to perform specific logic for unauthenticated r.

Superclass for any filter that controls access to a resource and may redirect the user to the login page if they are not authenticated. This superclass provides the method {@link #saveRequestAndRedirectToLogin(javax.servlet.ServletRequest, javax.servlet..

A PathConfigProcessor processes configuration entries on a per path (url) basis.Processes the specified {@code config}, unique to the given {@code path}, and returns the Filter that should execute for that path/config combination.处理指定的{@code config}，.

A Servlet Filter that enables AOP-style "around" advice for a ServletRequest via{@link #preHandle(javax.servlet.ServletRequest, javax.servlet.ServletResponse) preHandle},{@link #postHandle(javax.servlet.ServletRequest, javax.servlet.ServletResponse) pos.

Filter base class that guarantees to be just executed once per request, on any servlet container. It provides a {@link #doFilterInternal} method with HttpServletRequest and HttpServletResponse arguments.在任何servlet容器上，保证每个请求只执行一次的过滤器基类。它提供了一个带有HttpServlet.

Allows a filter to be named via JavaBeans-compatible {@link #getName()}/{@link #setName(String)} methods. If no name is specified, the name of the filter will default to the name given to it in {@code web.xml} (the {@code FilterConfig}'s {@link javax.ser.

Sets the filter’s {@link #setFilterConfig filterConfig} and then immediately calls {@link #onFilterConfigSet() onFilterConfigSet()} to trigger any processing a subclass might wish to perform.设置过滤器的{@link #setFilterConfig filterConfig}，然后立即调用{@link #onFil.

这是对Filter接口源码注释的翻译以及个人的理解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.过滤器是对资源请求(servlet或静态内容)或来自资源的响应执行过滤任务的对象，或两者兼有。Filters perform