org.springframework.boot.json.JsonParserFactory.java Source code

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Here is the source code for org.springframework.boot.json.JsonParserFactory.java

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/*
 * Copyright 2012-2019 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.boot.json;

import org.springframework.util.ClassUtils;

/**
 * Factory to create a {@link JsonParser}.
 *
 * @author Dave Syer
 * @since 1.0.0
 * @see JacksonJsonParser
 * @see GsonJsonParser
 * @see YamlJsonParser
 * @see BasicJsonParser
 */
public abstract class JsonParserFactory {

    /**
     * Static factory for the "best" JSON parser available on the classpath. Tries
     * Jackson, then Gson, Snake YAML, and then falls back to the {@link BasicJsonParser}.
     * @return a {@link JsonParser}
     */
    public static JsonParser getJsonParser() {
        if (ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", null)) {
            return new JacksonJsonParser();
        }
        if (ClassUtils.isPresent("com.google.gson.Gson", null)) {
            return new GsonJsonParser();
        }
        if (ClassUtils.isPresent("org.yaml.snakeyaml.Yaml", null)) {
            return new YamlJsonParser();
        }
        return new BasicJsonParser();
    }

}