spring ServletCookieValueMethodArgumentResolver 源码
spring ServletCookieValueMethodArgumentResolver 代码
文件路径：/spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ServletCookieValueMethodArgumentResolver.java
/*
* Copyright 2002-2020 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.web.servlet.mvc.method.annotation;
import jakarta.servlet.http.Cookie;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.core.MethodParameter;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.annotation.AbstractCookieValueMethodArgumentResolver;
import org.springframework.web.util.UrlPathHelper;
import org.springframework.web.util.WebUtils;
/**
* An {@link org.springframework.web.method.annotation.AbstractCookieValueMethodArgumentResolver}
* that resolves cookie values from an {@link HttpServletRequest}.
*
* @author Rossen Stoyanchev
* @since 3.1
*/
public class ServletCookieValueMethodArgumentResolver extends AbstractCookieValueMethodArgumentResolver {
private UrlPathHelper urlPathHelper = UrlPathHelper.defaultInstance;
public ServletCookieValueMethodArgumentResolver(@Nullable ConfigurableBeanFactory beanFactory) {
super(beanFactory);
}
public void setUrlPathHelper(UrlPathHelper urlPathHelper) {
this.urlPathHelper = urlPathHelper;
}
@Override
@Nullable
protected Object resolveName(String cookieName, MethodParameter parameter,
NativeWebRequest webRequest) throws Exception {
HttpServletRequest servletRequest = webRequest.getNativeRequest(HttpServletRequest.class);
Assert.state(servletRequest != null, "No HttpServletRequest");
Cookie cookieValue = WebUtils.getCookie(servletRequest, cookieName);
if (Cookie.class.isAssignableFrom(parameter.getNestedParameterType())) {
return cookieValue;
}
else if (cookieValue != null) {
return this.urlPathHelper.decodeRequestString(servletRequest, cookieValue.getValue());
}
else {
return null;
}
}
}
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