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/**
The MIT License (MIT) * Copyright (c) 2016 铭飞科技(mingsoft.net)

 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:

 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.mingsoft.util;

import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;


/**
 * json格式通用处理类
 * @author 王天培QQ:78750478
 * @version 
 * 版本号：100-000-000

 * 创建日期：2012-03-15

 * 历史修订：

 */
public class JsonUtil {

	/**
	 * 从一个JSON 对象字符格式中得到一个java对象
	 * 
	 * @param jsonString JSON 对象字符
	 * @param pojoCalss 对象class * 
	 * @return 返回java对象
	 */
	public static Object getObject4JsonString(String jsonString, Class pojoCalss) {
		Object pojo;
		JSONObject jsonObject = JSONObject.parseObject(jsonString);
		pojo = JSONObject.toJavaObject(jsonObject, pojoCalss);
		return pojo;
	}

	/**
	 * 从json HASH表达式中获取一个map，改map支持嵌套功能
	 * 
	 * @param jsonString json HASH表达式
	 * @return 返回map数组
	 */
	public static Map getMap4Json(String jsonString) {
		JSONObject jsonObject = JSONObject.parseObject(jsonString);
		Iterator keyIter = jsonObject.keySet().iterator();
		String key;
		Object value;
		Map valueMap = new HashMap();

		while (keyIter.hasNext()) {
			key = (String) keyIter.next();
			value = jsonObject.get(key);
			valueMap.put(key, value);
		}
		return valueMap;
	}

	/**
	 * 从json数组中得到相应java数组
	 * 
	 * @param jsonString json字符串
	 * @return 返回java数组
	 */
	public static Object[] getObjectArray4Json(String jsonString) {
		JSONArray jsonArray = JSONArray.parseArray(jsonString);
		return jsonArray.toArray();
	}

	/**
	 * 将一个对象转换为JSON字符串
	 * @param obj 对象
	 * @return 返回json字符串
	 */
	public static String getObjectToJsonObject(Object obj){
		return JSON.toJSON(obj).toString();
	}	
	

	/**
	 * 从json数组中解析出java字符串数组
	 * 
	 * @param jsonString json字符串
	 * @return 返回java字符串数字
	 */
	public static String[] getStringArray4Json(String jsonString) {
		JSONArray jsonArray = JSONArray.parseArray(jsonString);
		String[] stringArray = new String[jsonArray.size()];
		
		for (int i = 0; i < jsonArray.size(); i++) {
			stringArray[i] = jsonArray.get(i).toString();
		}

		return stringArray;
	}

	/**
	 * 将一个JSON数据转换为对应的JAVA对象

	 * JSON数据中键的名称必须和对应JAVA对象中bean字段的名称一致

	 * @param  java对象值
	 * @param jsonString JSON 对象字符
	 * @param cls 对象class * 
	 * @return 返回java对象
	 */
	public static  T getJsonToObject(String jsonString, Class cls) {
		return JSONObject.parseObject(jsonString,cls);
	}
	
	/**
	 * 从json对象集合表达式中得到一个java对象集合

	 * JSON数据中键的名称必须和对应JAVA对象中bean字段的名称一致

	 * 
	 * @param  对象值
	 * @param jsonString json字符串
	 * @param cls  JAVA Bean对象
	 * @return JAVA bean对象集合list
	 */
	public static  List queryJsonToList(String jsonString,Class cls) {
		List list = JSONArray.parseArray(jsonString,cls);
		return list;
	}
	
}