日期:2014-05-16 浏览次数:20378 次
/** * Copyright (c) linkwise 2007-2009 corporation. * All rights reserved */ package com.linghui.common.util; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import net.sf.json.JsonConfig; import net.sf.json.util.CycleDetectionStrategy; import com.linghui.common.util.DateUtil; import com.linghui.common.util.jsonutil.DateJsonValueProcessor; /** * @author robert.feng * */ public class JsonUtil { /** * 从一个JSON 对象字符格式中得到一个java对象 * @param jsonString * @param pojoCalss * @return */ public static Object getObject4JsonString(String jsonString,Class pojoCalss){ Object pojo; JSONObject jsonObject = JSONObject.fromObject( jsonString ); pojo = JSONObject.toBean(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 * @return */ public static Map getMap4Json(String jsonString){ JSONObject jsonObject = JSONObject.fromObject( jsonString ); Iterator keyIter = jsonObject.keys(); 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 * @return */ public static Object[] getObjectArray4Json(String jsonString){ JSONArray jsonArray = JSONArray.fromObject(jsonString); return jsonArray.toArray(); } /** * 从json对象集合表达式中得到一个java对象列表 * @param jsonString * @param pojoClass * @return */ public static List getList4Json(String jsonString, Class pojoClass){ JSONArray jsonArray = JSONArray.fromObject(jsonString); JSONObject jsonObject; Object pojoValue; List list = new ArrayList(); for ( int i = 0 ; i<jsonArray.size(); i++){ jsonObject = jsonArray.getJSONObject(i); pojoValue = JSONObject.toBean(jsonObject,pojoClass); list.add(pojoValue); } return list; } /** * 从json数组中解析出java字符串数组 * @param jsonString * @return */ public static String[] getStringArray4Json(String jsonString){ JSONArray jsonArray = JSONArray.fromObject(jsonString); String[] stringArray = new String[jsonArray.size()]; for( int i = 0 ; i<jsonArray.size() ; i++ ){ stringArray[i] = jsonArray.getString(i); } return stringArray; } /** * 从json数组中解析出javaLong型对象数组 * @param jsonString * @return */ public static Long[] getLongArray4Json(String jsonString){ JSONArray jsonArray = JSONArray.fromObject(jsonString); Long[] longArray = new Long[jsonArray.size()]; for( int i = 0 ; i<jsonArray.size() ; i++ ){ longArray[i] = jsonArray.getLong(i); } return longArray; } /** * 从json数组中解析出java Integer型对象数组 * @param jsonString * @return */ public static Integer[] getIntegerArray4Json(String jsonString){ JSONArray jsonArray = JSONArray.fromObject(jsonString); Integer[] integerArray = new Integer[jsonArray.size()]; for( int i = 0 ; i<jsonArray.size() ; i++ ){ integerArray[i] = jsonArray.getInt(i); } return integerArray; } /** * 从json数组中解析出java Date 型对象数组,使用本方法必须保证 * @param jsonString * @return */ public static Date[] getDateArray4Json(String jsonString,String DataFormat){ JSONArray jsonArray = JSONArray.fromObject(jsonString); Date[] dateArray = new Date[jsonArray.size()]; String dateString; Date date; for( int i = 0 ; i<jsonArray.size() ; i++ ){ dateString = jsonArray.getString(i); date = DateUtil.stringToDate(dateString, DataFormat); dateArray[i] = date; } return dateArray; } /** * 从json数组中解析出java Integer型对象数组 * @param jsonString * @return */ public sta