import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import com.alibaba.fastjson.JSONArray;

import com.alibaba.fastjson.JSONObject;

/**

 * json 解析工具类

 * @author heqiao

 *

 */

public class JsonUtil {

    /**

     * 单个对象的所有键值

     *

     * @param object  单个对象

     *

     * @return Map<String, Object> map   所有   String键   Object值

     *             ex：{pjzyfy=0.00, xh=01, zzyl=0.00, mc=住院患者压疮发生率, pjypfy=0.00, rs=0, pjzyts=0.00, czydm=0037, lx=921, zssl=0.00}

     */

    public static Map<String, Object> getValue(Object object) {

        Map<String, Object> map = new HashMap<String, Object>();

        Object obj = JSONObject.toJSON(object);//将对象转化为json格式对象

        JSONObject jsonObject = JSONObject.parseObject(obj.toString());//转化为json对象

        Set<String> s = jsonObject.keySet();//获取所有的键

        for (String string : s) {

            map.put(string, jsonObject.get(string));//根据键获取值

        }

        System.out.println("单个对象的所有键值===="+map.toString());

        return map;

    }

    /**

     * 单个对象的某个键的值

     * @param object 对象

     *

     * @param key  键

     *

     * @return   Object   键在对象中所对应得值

     */

    public static Object getValueByKey(Object object, String key) {

        Object obj = JSONObject.toJSON(object);//将对象转化为json格式对象

        JSONObject jsonObject = JSONObject.parseObject(obj.toString());//转化为JSONObject对象

        System.out.println("单个对象的某个键的值===="+jsonObject.get(key));

        return jsonObject.get(key);//根据键获取值

    }

/**

 * 多个（列表）对象的所有键值

 * @param object

 * @return List<Map<String,Object>> 列表中所有对象的所有键值

 * ex:[{pjzyfy=0.00, xh=01, zzyl=0.00, mc=住院患者压疮发生率, pjypfy=0.00, rs=0, pjzyts=0.00, czydm=0037, lx=921, zssl=0.00},

 *     {pjzyfy=0.00, xh=02, zzyl=0.00, mc=新生儿产伤发生率, pjypfy=0.00, rs=0, pjzyts=0.00, czydm=0037, lx=13, zssl=0.00},

 *     {pjzyfy=0.00, xh=03, zzyl=0.00, mc=阴道分娩产妇产伤发生率, pjypfy=0.00, rs=0, pjzyts=0.00, czydm=0037, lx=0, zssl=0.00},

 *     {pjzyfy=0.00, xh=04, zzyl=0.75, mc=输血反应发生率, pjypfy=0.00, rs=0, pjzyts=0.00, czydm=0037, lx=0, zssl=0.00},

 *     {pjzyfy=5186.12, xh=05, zzyl=0.00, mc=剖宫产率, pjypfy=1611.05, rs=13, pjzyts=7.15, czydm=0037, lx=13, zssl=0.00}]

 */

    public static List<Map<String,Object>> getValues(List<Object> object) {

        List<Map<String,Object>> list=new ArrayList<Map<String,Object>>();

        Object obj=JSONArray.toJSON(object);//转化为JSONArray格式

        JSONArray jarr = JSONArray.parseArray(obj.toString()); //转化为JSONArray对象

        for (Iterator<Object> iterator = jarr.iterator(); iterator.hasNext();) {

            JSONObject job = (JSONObject) iterator.next();

            Set<String> s=job.keySet();

            Map<String,Object> listChild=new HashMap<String,Object>();

            //获取对象所有键值

            for (String string : s) {

                listChild.put(string, job.get(string));

            }

            //将对象添加到列表中

            list.add(listChild);

          }

        System.out.println("多个（列表）对象的所有键值===="+list.toString());

        return list;

    }

/**

 * 多个（列表）对象的某个键的值

 * @param object

 * @param key  要查找的值的字段名

 * @return  List<Object>  键在列表中对应的所有值

 *          ex:[住院患者压疮发生率, 新生儿产伤发生率, 阴道分娩产妇产伤发生率, 输血反应发生率, 剖宫产率]

 */

    public static List<Object> getValuesByKey(List<Object> object, String key) {

         Object obj=JSONArray.toJSON(object);//将对象转化为json格式对象

         JSONArray jarr = JSONArray.parseArray(obj.toString());

         List<Object> list=new ArrayList<Object>();

         for (Iterator<Object> iterator = jarr.iterator(); iterator.hasNext();) {

             JSONObject job = (JSONObject) iterator.next();

                 list.add(job.get(key));//根据键获取值并添加到list中

           }

        System.out.println("多个（列表）对象的某个键的值列表===="+list.toString());

        return list;

    }

}