net.paissad.minus.utils.JSONUtils.java Source code

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Here is the source code for net.paissad.minus.utils.JSONUtils.java

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/*
 * This file is part of Minus-Java.
 * 
 * Minus-Java is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Minus-Java 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 Lesser General Public License
 * along with Minus-Java. If not, see <http://www.gnu.org/licenses/>.
 */

package net.paissad.minus.utils;

import java.util.HashMap;
import java.util.Map;

import org.json.simple.JSONObject;
import org.json.simple.JSONValue;
import org.json.simple.parser.ParseException;

import net.paissad.minus.exception.MinusException;

/**
 * @author Papa Issa DIAKHATE (paissad)
 * 
 */
public class JSONUtils {

    /**
     * Parse a String (usually an HTTP response which is a JSON formatted
     * String) and returns its <tt>Map</tt> view.
     * 
     * @param response - A formatted JSON <tt>String</tt>.
     * @return A {@link Map} representing the JSON response.
     * @throws ParseException
     * @throws MinusException If the specified <tt>String</tt> cannot be parsed
     *             as a <tt>Map</tt> or is not a <tt>JSONObject</tt>.
     */
    public static Map<String, Object> getMapFromJSONString(final String response)
            throws ParseException, MinusException {

        Object obj = JSONValue.parseWithException(response);
        if (obj instanceof JSONObject) {
            @SuppressWarnings("unchecked")
            Map<String, Object> jsonResult = ((HashMap<String, Object>) obj);
            return jsonResult;
        } else {
            throw new MinusException("The JSON string is not of type JSONObject => " + response);
        }
    }

}