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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.

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}，.

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.

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..

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.

model文件[request_definition]r = sub, dom, obj, act[policy_definition]p = sub, dom, obj, act[role_definition]g = _, _, _[policy_effect]e = some(where (p.eft == allow))[matchers]m = g(r.sub, p.sub, r.dom)&& r.dom == p.dom && r.o