dk.dma.msiproxy.common.util.JsonUtils.java Source code

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Here is the source code for dk.dma.msiproxy.common.util.JsonUtils.java

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/* Copyright (c) 2011 Danish Maritime Authority
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */
package dk.dma.msiproxy.common.util;

import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;
import java.io.InputStream;

/**
 * JSON-related utility methods
 */
public class JsonUtils {

    /**
     * Parses the json data as an entity of the given class
     *
     * @param data the json data to parse
     * @param dataClass the class of the data
     * @return the parsed data
     */
    public static <T> T fromJson(String data, Class<T> dataClass) throws IOException {
        ObjectMapper jsonMapper = new ObjectMapper();
        return jsonMapper.readValue(data, dataClass);
    }

    /**
     * Parses the json data as an entity of the given class
     *
     * @param in the json data to parse
     * @param dataClass the class of the data
     * @return the parsed data
     */
    public static <T> T fromJson(InputStream in, Class<T> dataClass) throws IOException {
        ObjectMapper jsonMapper = new ObjectMapper();
        return jsonMapper.readValue(in, dataClass);
    }

    /**
     * Formats the entity as  json data
     *
     * @param data the entity to format
     * @return the json data
     */
    public static String toJson(Object data) throws IOException {
        ObjectMapper jsonMapper = new ObjectMapper();
        return jsonMapper.writeValueAsString(data);
    }

}