spring SharedObjectMapper 源码

  • 2022-08-12
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springboot SharedObjectMapper 代码

文件路径:/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/json/SharedObjectMapper.java

/*
 * Copyright 2012-2020 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.boot.buildpack.platform.json;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.PropertyNamingStrategies;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;

/**
 * Provides access to a shared pre-configured {@link ObjectMapper}.
 *
 * @author Phillip Webb
 * @since 2.3.0
 */
public final class SharedObjectMapper {

	private static final ObjectMapper INSTANCE;

	static {
		ObjectMapper objectMapper = new ObjectMapper();
		objectMapper.registerModule(new ParameterNamesModule());
		objectMapper.enable(SerializationFeature.INDENT_OUTPUT);
		objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
		objectMapper.setPropertyNamingStrategy(PropertyNamingStrategies.LOWER_CAMEL_CASE);
		INSTANCE = objectMapper;
	}

	private SharedObjectMapper() {
	}

	public static ObjectMapper get() {
		return INSTANCE;
	}

}

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