package com.matrix.system.hive.plugin.util;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.UnsupportedEncodingException;
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import java.util.List;
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import com.matrix.core.tools.StringUtils;
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import net.sf.json.JSONArray;
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import net.sf.json.JSONObject;
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/**
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* JSON对象操作工具类，格式转化，获取值（防止空异常）
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*
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* @author Ron
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* @createTime 2014.08.30
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*/
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public class JSONUtils {
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public static String getString(JSONObject jsonparam, String key) {
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if (jsonparam == null) {
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return "";
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}
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try {
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return jsonparam.getString(key);
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}
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catch (Exception e) {
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return "";
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}
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}
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/****
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*
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* @param jsonparam
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* @param key
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* @param str 为null返回默认值
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* @return
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*/
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public static String getString(JSONObject jsonparam, String key, String str) {
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if (jsonparam == null) {
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return str;
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}
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try {
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String s = jsonparam.getString(key);
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if (StringUtils.isNotBlank(s)) {
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return StringUtils.trim(s);
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}
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return str;
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}
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catch (Exception e) {
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return str;
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}
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}
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public static int getInt(JSONObject jsonparam, String key) {
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if (jsonparam == null) {
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return 0;
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}
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try {
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return jsonparam.getInt(key);
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}
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catch (Exception e) {
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return 0;
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}
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}
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/**
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* 序列化对象
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*
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* @param obj
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* @return
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*/
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public static String setSer(Object obj) {
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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ObjectOutputStream out;
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String serStr = "";
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try {
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out = new ObjectOutputStream(outputStream);
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out.writeObject(obj);
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serStr = outputStream.toString("ISO-8859-1");
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serStr = java.net.URLEncoder.encode(serStr, "UTF-8");
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}
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catch (IOException e) {
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e.printStackTrace();
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}
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return serStr;
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}
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/**
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* 反序列化对象
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*
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* @param serStr
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* @return
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*/
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public static Object getSer(String serStr) {
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String redStr;
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InputStream inputStream = null;
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try {
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redStr = java.net.URLDecoder.decode(serStr, "UTF-8");
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inputStream = new ByteArrayInputStream(redStr.getBytes("ISO-8859-1"));
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}
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catch (UnsupportedEncodingException e1) {
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e1.printStackTrace();
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}
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ObjectInputStream in = null;
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try {
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in = new ObjectInputStream(inputStream);
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return in.readObject();
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}
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catch (Exception e) {
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System.out.println("对象存在问题，请重新读取！");
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}
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return null;
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}
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public static long getLong(JSONObject jsonparam, String key) {
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if (jsonparam == null) {
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return 0;
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}
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try {
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return jsonparam.getLong(key);
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}
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catch (Exception e) {
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return 0;
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}
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}
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public static int getInt(JSONObject jsonparam, String key, int number) {
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if (jsonparam == null) {
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return number;
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}
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try {
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return jsonparam.getInt(key);
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}
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catch (Exception e) {
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return number;
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}
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}
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public static JSONArray getJSONArray(JSONObject jsonparam, String key) {
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JSONArray array = null;
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if (jsonparam == null) {
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array = new JSONArray();
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}
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else {
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try {
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array = jsonparam.getJSONArray(key);
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}
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catch (Exception e) {
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array = new JSONArray();
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}
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}
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return array;
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}
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public static JSONArray getJSONArray(String key) {
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if (StringUtils.isBlank(key)) {
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return new JSONArray();
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}
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try {
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return JSONArray.fromObject(key);
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}
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catch (Exception e) {
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return new JSONArray();
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}
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}
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public static JSONObject getJsonObject(String key) {
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if (StringUtils.isBlank(key))
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return new JSONObject();
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try {
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return JSONObject.fromObject(key);
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}
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catch (Exception e) {
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return new JSONObject();
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}
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}
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public static JSONObject getJsonObject(JSONObject jsonparam, String key) {
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if (StringUtils.isBlank(key))
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return new JSONObject();
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try {
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return jsonparam.getJSONObject(key);
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}
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catch (Exception e) {
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return new JSONObject();
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}
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}
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public static Double getDouble(JSONObject jsonparam, String key) {
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try {
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Double value = jsonparam.getDouble(key);
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return value;
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}
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catch (Exception e) {
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}
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return 0.0;
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}
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public static String getString(List<String> list, int i) {
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if (list == null) {
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return "";
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}
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try {
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return list.get(i);
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}
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catch (Exception e) {
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return "";
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}
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}
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}
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