spring security RequestMatcherRedirectFilter 源码
spring security RequestMatcherRedirectFilter 代码
文件路径：/web/src/main/java/org/springframework/security/web/RequestMatcherRedirectFilter.java
/*
* Copyright 2002-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.web;
import java.io.IOException;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.security.web.util.matcher.RequestMatcher;
import org.springframework.util.Assert;
import org.springframework.web.filter.OncePerRequestFilter;
/**
* Filter that redirects requests that match {@link RequestMatcher} to the specified URL.
*
* @author Evgeniy Cheban
* @since 5.6
*/
public final class RequestMatcherRedirectFilter extends OncePerRequestFilter {
private final RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
private final RequestMatcher requestMatcher;
private final String redirectUrl;
/**
* Create and initialize an instance of the filter.
* @param requestMatcher the request matcher
* @param redirectUrl the redirect URL
*/
public RequestMatcherRedirectFilter(RequestMatcher requestMatcher, String redirectUrl) {
Assert.notNull(requestMatcher, "requestMatcher cannot be null");
Assert.hasText(redirectUrl, "redirectUrl cannot be empty");
this.requestMatcher = requestMatcher;
this.redirectUrl = redirectUrl;
}
/**
* {@inheritDoc}
*/
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
if (this.requestMatcher.matches(request)) {
this.redirectStrategy.sendRedirect(request, response, this.redirectUrl);
}
else {
filterChain.doFilter(request, response);
}
}
}
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