spring security SimpleRedirectSessionInformationExpiredStrategy 源码
spring security SimpleRedirectSessionInformationExpiredStrategy 代码
文件路径：/web/src/main/java/org/springframework/security/web/session/SimpleRedirectSessionInformationExpiredStrategy.java
/*
* Copyright 2002-2016 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.session;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.util.UrlUtils;
import org.springframework.util.Assert;
/**
* Performs a redirect to a fixed URL when an expired session is detected by the
* {@code ConcurrentSessionFilter}.
*
* @author Marten Deinum
* @since 4.2.0
*/
public final class SimpleRedirectSessionInformationExpiredStrategy implements SessionInformationExpiredStrategy {
private final Log logger = LogFactory.getLog(getClass());
private final String destinationUrl;
private final RedirectStrategy redirectStrategy;
public SimpleRedirectSessionInformationExpiredStrategy(String invalidSessionUrl) {
this(invalidSessionUrl, new DefaultRedirectStrategy());
}
public SimpleRedirectSessionInformationExpiredStrategy(String invalidSessionUrl,
RedirectStrategy redirectStrategy) {
Assert.isTrue(UrlUtils.isValidRedirectUrl(invalidSessionUrl), "url must start with '/' or with 'http(s)'");
this.destinationUrl = invalidSessionUrl;
this.redirectStrategy = redirectStrategy;
}
@Override
public void onExpiredSessionDetected(SessionInformationExpiredEvent event) throws IOException {
this.logger.debug("Redirecting to '" + this.destinationUrl + "'");
this.redirectStrategy.sendRedirect(event.getRequest(), event.getResponse(), this.destinationUrl);
}
}
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