Java Json convertJsonValue(Object jsonValue, Class desiredType)

Description

convert Json Value

License

Apache License

Declaration

public static Object convertJsonValue(Object jsonValue, Class desiredType) 

Method Source Code

//package com.java2s;
/*/*from   ww  w. ja  va  2  s.  co m*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 *     http://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.
 */

import javax.json.JsonNumber;

import javax.json.JsonString;
import javax.json.JsonValue;

public class Main {
    public static Object convertJsonValue(Object jsonValue, Class desiredType) {
        if (jsonValue instanceof JsonNumber) {
            JsonNumber number = (JsonNumber) jsonValue;

            if (desiredType == null || desiredType == Long.class || desiredType == Long.TYPE) {
                return number.longValue();
            } else if (desiredType == Integer.class || desiredType == Integer.TYPE) {
                return number.intValue();
            } else if (desiredType == Double.class || desiredType == Double.TYPE) {
                return number.doubleValue();
            } else {
                return number.longValue();
            }
        } else if (jsonValue instanceof JsonString) {
            return ((JsonString) jsonValue).getString();
        } else if (jsonValue instanceof JsonValue) {
            if (jsonValue == JsonValue.TRUE) {
                return true;
            } else if (jsonValue == JsonValue.FALSE) {
                return false;
            } else {
                return jsonValue.toString();
            }
        } else if (jsonValue instanceof Number) {
            Number jsonNumber = (Number) jsonValue;
            if (desiredType == Integer.TYPE || desiredType == Integer.class) {
                return jsonNumber.intValue();
            } else if (desiredType == Long.TYPE || desiredType == Long.class) {
                return jsonNumber.longValue();
            } else if (desiredType == Double.TYPE || desiredType == Double.class) {
                return jsonNumber.doubleValue();
            } else if (desiredType == Short.TYPE || desiredType == Short.class) {
                return jsonNumber.shortValue();
            } else {
                return jsonValue;
            }
        } else if (jsonValue instanceof Object[]) {
            Object[] array = (Object[]) jsonValue;
            for (int i = 0; i < array.length; i++) {
                array[i] = convertJsonValue(array[i], desiredType);
            }
            return array;
        } else {
            return jsonValue;
        }
    }
}

Related

1. addAll(JsonObjectBuilder a, JsonObjectBuilder b)
2. asJsonObject(JsonValue value)
3. asString(JsonValue value)
4. compare(JsonValue expected, JsonValue actual, boolean strict)
5. escape(String text)
6. fill_dictionary(Map dictionary, JsonObject jsonObject)
7. fill_key_value(JsonObjectBuilder jsonObject, String key, Object value)
8. fill_list(JsonObjectBuilder jsonObject, String key, List