spring security StaticHeadersWriter 源码
spring security StaticHeadersWriter 代码
文件路径：/web/src/main/java/org/springframework/security/web/header/writers/StaticHeadersWriter.java
/*
* Copyright 2002-2019 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.header.writers;
import java.util.Collections;
import java.util.List;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.security.web.header.Header;
import org.springframework.security.web.header.HeaderWriter;
import org.springframework.util.Assert;
/**
* {@code HeaderWriter} implementation which writes the same {@code Header} instance.
*
* @author Marten Deinum
* @author Rob Winch
* @author Ankur Pathak
* @since 3.2
*/
public class StaticHeadersWriter implements HeaderWriter {
private final List<Header> headers;
/**
* Creates a new instance
* @param headers the {@link Header} instances to use
*/
public StaticHeadersWriter(List<Header> headers) {
Assert.notEmpty(headers, "headers cannot be null or empty");
this.headers = headers;
}
/**
* Creates a new instance with a single header
* @param headerName the name of the header
* @param headerValues the values for the header
*/
public StaticHeadersWriter(String headerName, String... headerValues) {
this(Collections.singletonList(new Header(headerName, headerValues)));
}
@Override
public void writeHeaders(HttpServletRequest request, HttpServletResponse response) {
for (Header header : this.headers) {
if (!response.containsHeader(header.getName())) {
for (String value : header.getValues()) {
response.addHeader(header.getName(), value);
}
}
}
}
@Override
public String toString() {
return getClass().getName() + " [headers=" + this.headers + "]";
}
}
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