spring security CookieDeserializer 源码
spring security CookieDeserializer 代码
文件路径：/web/src/main/java/org/springframework/security/web/jackson2/CookieDeserializer.java
/*
* Copyright 2015-2016 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.jackson2;
import java.io.IOException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.MissingNode;
import com.fasterxml.jackson.databind.node.NullNode;
import jakarta.servlet.http.Cookie;
/**
* Jackson deserializer for {@link Cookie}. This is needed because in most cases we don't
* set {@link Cookie#getDomain()} property. So when jackson deserialize that json
* {@link Cookie#setDomain(String)} throws {@link NullPointerException}. This is
* registered with {@link CookieMixin} but you can also use it with your own mixin.
*
* @author Jitendra Singh
* @since 4.2
* @see CookieMixin
*/
class CookieDeserializer extends JsonDeserializer<Cookie> {
@Override
public Cookie deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
ObjectMapper mapper = (ObjectMapper) jp.getCodec();
JsonNode jsonNode = mapper.readTree(jp);
Cookie cookie = new Cookie(readJsonNode(jsonNode, "name").asText(), readJsonNode(jsonNode, "value").asText());
cookie.setComment(readJsonNode(jsonNode, "comment").asText());
cookie.setDomain(readJsonNode(jsonNode, "domain").asText());
cookie.setMaxAge(readJsonNode(jsonNode, "maxAge").asInt(-1));
cookie.setSecure(readJsonNode(jsonNode, "secure").asBoolean());
cookie.setVersion(readJsonNode(jsonNode, "version").asInt());
cookie.setPath(readJsonNode(jsonNode, "path").asText());
cookie.setHttpOnly(readJsonNode(jsonNode, "httpOnly").asBoolean());
return cookie;
}
private JsonNode readJsonNode(JsonNode jsonNode, String field) {
return hasNonNullField(jsonNode, field) ? jsonNode.get(field) : MissingNode.getInstance();
}
private boolean hasNonNullField(JsonNode jsonNode, String field) {
return jsonNode.has(field) && !(jsonNode.get(field) instanceof NullNode);
}
}
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